LLM chat completions

LLM chat completions. Send a prompt, get an answer from Meta's Llama 4 Scout (17B active, 16 experts), with an optional system prompt, up to 1,024 output tokens and adjustable temperature. Fast and cheap. Use for drafting, reasoning steps, Q&A and any quick LLM call without an AI provider account; other open models by name at /v1/chat/completions, harder reasoning at ai_chat_large.

Email verification, validation. Check email syntax, DNS and MX records, disposable providers, role addresses, free providers and SPF/DMARC presence. Returns likely-deliverable, risky, undeliverable or invalid with reasons. No message is sent and the mail server is not contacted. These are DNS and syntax signals, not proof that a mailbox exists or accepts delivery. Use before sending mail or saving a signup.

Scrape website page to Markdown. Fetch any public web page URL and get clean, LLM-ready text or Markdown: main content, code blocks, tables, links and headings, for RAG and agent context. Static HTML, Markdown or text; optional section ID. Default 20,000 output characters, max 100,000; input 2 MiB. No JavaScript rendering (see /extract/rendered), logins or paywalls. Empty pages, bad sections, browser challenges and errors are not charged. Use to read docs or articles.

SHA256 hash, SHA-256. Hash UTF-8 text with SHA-256 (default), SHA-1, SHA-384 or SHA-512 and return the digest in hex and base64. Use for checksums, cache keys and deduplication.

Crypto price and token price. Crypto token USD price by ticker (ETH, BTC, USDC, AERO, ARB, OP, LINK…) or by any ERC-20 0x address on Base, Ethereum, Arbitrum or Optimism, from the deepest Uniswap v3 pool against USDC or WETH, read live from the chain. Returns the pool, its fee tier, the quote reserve and a thin-liquidity flag. Spot price, not a time average. No pool returns 404, uncharged. Use to value a token or check a quote before a swap or payment.

Block number, Arbitrum One. Latest block number and block details on Arbitrum One, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use arb_gas. A block that does not exist yet returns 404, uncharged.

Block number, Base. Latest block number and block details on Base, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use base_gas. A block that does not exist yet returns 404, uncharged.

Token transfers, Base. List a wallet's recent transfers of one ERC-20 token (default USDC) on Base, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use base_token_balance. Malformed addresses are rejected with 400, uncharged.

Counterparty risk check. Screen a payee before paying, trading or onboarding: one call vets an address on Base, Ethereum, Arbitrum or Optimism with an OFAC SDN match, account type and activity, USD holdings and, on Base, wallet or contract risk checks; add the payee's domain for its age and trust flags. One block, review or pass verdict with reasons. Screening aid, not legal advice or a security audit. Use before paying, trading with or onboarding an address.

Hex to RGB, color converter. Convert a colour between hex, RGB and HSL, and give its relative luminance and whether black or white text reads better on it. Accepts #rgb, #rrggbb, rgb(r,g,b) and hsl(h,s%,l%). Use for theming and design checks.

Date difference. Time between two dates or timestamps: total days, weeks, hours, minutes and seconds, a years-months-days breakdown, and the number of weekdays (Monday-Friday) in between. Use for deadlines, ages and durations.

ENS name resolver, reverse ENS. Resolve an Ethereum Name Service name such as vitalik.eth to its wallet address and avatar, or look up the primary ENS name of an address (reverse resolution). Read live from Ethereum mainnet. Use to turn a human-readable name into a payable address, or to show a readable name for a counterparty address.

Block number, Ethereum. Latest block number and block details on Ethereum, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use eth_gas. A block that does not exist yet returns 404, uncharged.

Ethereum gas price. Current gas price on Ethereum (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use eth_receipt.

Block number, Optimism. Latest block number and block details on Optimism, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use op_gas. A block that does not exist yet returns 404, uncharged.

Block number, Polygon PoS. Latest block number and block details on Polygon PoS, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use polygon_gas. A block that does not exist yet returns 404, uncharged.

Credit card validation (Luhn). Check whether a card number or other ID passes the Luhn (mod 10) algorithm used by card numbers, IMEI numbers and many IDs, and compute the check digit to append. Only the format is checked; nothing is looked up. Use to catch typos in card or ID numbers.

Airport delays, US ground stops. Live FAA National Airspace System status for US airports: ground stops, ground delay programs, arrival and departure delays (with minimum, maximum and trend) and closures, each with its reason. Give an IATA code such as LGA for one airport (normal when nothing is reported), or nothing for the whole country. Public FAA data, refreshed about every minute. Use before travel planning, logistics or customer notices.

Base gas price and fee estimate. Live gas prices on Base (chain 8453) read from the latest block: base fee and priority fee in gwei, suggested maxFeePerGas and maxPriorityFeePerGas in wei for an EIP-1559 transaction, how full the latest block is, and the estimated execution fee in ETH for an ETH transfer and an ERC-20 transfer. Use before sending a transaction on Base or to decide whether to wait for lower fees.

Base native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Base at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use base_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Base account nonce. Read the transaction count (nonce) of a 0x address on Base, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use base_balance. A malformed address is rejected with 400, uncharged.

Base64 decode. Decode standard or URL-safe base64 to UTF-8 text. Missing padding is tolerated. Use to read encoded headers, tokens and data URLs.

Base64 encode. Encode UTF-8 text as standard base64, and also return the URL-safe variant. Use for data URLs, headers and basic auth strings.

Bitcoin fee rates. Current Bitcoin network fee rates in sat/vB for next-block, half-hour, one-hour and economy confirmation, the estimated cost in sats of a typical payment, mempool size and total pending fees, and the latest block height. Use before sending a Bitcoin transaction or to decide whether to wait for lower fees.

Case converter. Convert text or identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, Sentence case, UPPER and lower. Handles mixed input like 'userID_value'. Use when renaming fields or generating code identifiers.

Color contrast check (WCAG). WCAG 2 contrast ratio between a text colour and a background colour, with pass/fail for AA and AAA at normal and large text sizes. Use to check that a design is readable.

Cron expression next run times. Next run times (in UTC) of a standard 5-field cron expression (minute hour day month weekday; ranges, lists, steps and names like MON or JAN supported). Use to check a schedule before deploying it.

CSV to JSON. Convert CSV (comma, semicolon, tab or pipe; delimiter detected automatically; quoted fields supported) to a JSON array of objects using the first row as keys. Numbers stay as text unless numbers=true. Use to load spreadsheet exports into an agent.

Date calculator, add time. Add (or subtract, with negative numbers) years, months, weeks, days, hours and minutes to a date, or add business days (skipping Saturdays and Sundays). Month ends are clamped (31 Jan + 1 month = 28/29 Feb). Use to compute due dates and expiries.

Week number and date facts. Weekday, ISO week number and week-year, day of the year, quarter, days in the month, leap year, Unix timestamp and whether it is a weekend, for any date. Use for calendar and reporting logic.

Dictionary definition. Definitions of an English word from Wiktionary, grouped by part of speech, with example sentences where Wiktionary gives them, plus the page link and the CC BY-SA attribution to show. Use for writing help, vocabulary, translation checks and word games.

Domain lookup, trust verdict. A trust verdict for any domain in one call: high/medium/low trust with named flags for very new registrations, expiry, missing or weak SPF and DMARC, too few nameservers, no web host and non-resolving domains, plus the key facts (registrar, age, nameservers, DNSSEC). Use for lead qualification, phishing and vendor checks, and before an agent sends mail to or trusts a domain. Signals only, not a guarantee. Raw DNS records: domain.

Ethereum native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Ethereum at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use eth_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Token transfers, Ethereum. List a wallet's recent transfers of one ERC-20 token (default USDC) on Ethereum, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use eth_token_balance. Malformed addresses are rejected with 400, uncharged.

Currency exchange rates, forex. Foreign exchange rates from the European Central Bank for about 30 major currencies (USD, EUR, GBP, JPY, CHF, SEK, CAD, AUD, CNY, INR, BRL and more). Give a base currency, optionally the target currencies and an amount, and get the rates, the converted amounts and the date the rates apply to. Use for currency conversion, invoice and price calculations, and reporting in another currency.

Geocoding. Find places by name in Wikidata (CC0) and get their coordinates, description, country, administrative region, population and elevation where recorded, best match first. Cities, towns, landmarks and other places with coordinates. Use before weather, sun or distance lookups, or to tell two places of the same name apart.

HTML to plain text. Strip HTML to readable plain text: scripts and styles removed, block elements become line breaks, list items get bullets, entities decoded. Use to feed web content or emails to an LLM.

Security headers check, HTTP. Fetch a public URL and grade its HTTP security headers: HSTS, Content-Security-Policy, framing protection, nosniff, Referrer-Policy and Permissions-Policy, plus version leaks (Server, X-Powered-By) and cookies missing Secure, HttpOnly or SameSite. Returns a grade A-F, a score and each check with its value. Use to review a site's basic web security; for DNS and email records use domain. Private hosts are refused with 400, uncharged.

HTTP status code meaning. Name and plain-language meaning of an HTTP status code (1xx-5xx, including 402 Payment Required and 429 Too Many Requests), and whether to retry. Use when handling API errors.

Hyperliquid funding rate, perps. Live Hyperliquid perpetual futures data for a coin (BTC, ETH, SOL, HYPE…): mark, oracle and mid price, hourly funding rate and its APR, premium, open interest in coins and USD, 24-hour volume and price change, and max leverage. Without a coin, the 20 most traded markets by 24-hour volume. Read from Hyperliquid's public API. Use for funding-rate checks, basis trades, derivatives dashboards and market context.

Image generation, generate image. Text-to-image generation with FLUX.1 schnell. Send a prompt, get a 1024x1024 JPEG back as base64 in a few seconds. Use for illustrations, thumbnails, mockups, avatars and social media images. Optional steps parameter (1-8, default 4) trades speed for detail.

IP address info, classify an IP. Classify an IPv4 or IPv6 address without any lookup: version, whether it is private, loopback, link-local, carrier-grade NAT or public, and its integer and reverse-DNS forms (IPv4). Use to triage IPs in logs or allowlists.

JSON formatter, pretty-print. Format JSON with indentation (2 or 4 spaces, or tabs) and optionally sorted keys. Returns the formatted text. Use to make machine JSON readable or to normalise it for diffs.

Minify JSON. Remove all unnecessary whitespace from JSON and report the size before and after. Use to shrink payloads or prompts.

JSON repair. Fix JSON as LLMs often write it: removes ```json fences and surrounding prose, comments and trailing commas, converts single quotes, quotes bare keys, maps True/False/None, and closes unclosed brackets. Returns the repaired JSON and whether it now parses. Use when an LLM's JSON output fails to parse.

JSON to CSV, array to table. Convert a JSON array of objects to CSV with a header row built from all keys. Nested values are written as JSON. Use to export API results to a spreadsheet.

JSON validator, validate JSON. Check whether text is valid JSON. Returns valid true/false, the parsed value's type and size, and for invalid input the error message with line and column. Use before parsing an LLM's or an API's output.

JWT decode. Decode a JSON Web Token's header and payload without verifying the signature, and report issued-at, not-before and expiry as dates and whether it has expired. The token is not stored. Do not use the result to trust a token. Use to debug auth flows.

Keccak hash, keccak256. Keccak-256 hash (the Ethereum hash) of text or of 0x hex bytes, as used for function selectors, event topics and storage slots. Use when building or decoding EVM calls.

Markdown to HTML. Convert Markdown (headings, paragraphs, bold, italic, strikethrough, links, images, inline and fenced code, lists and task lists, tables, quotes, rules) to HTML. Raw HTML in the input is escaped, so the output is safe to embed. Use to publish agent-written Markdown on a web page.

Roman numerals. Convert a number (1-3999) to Roman numerals, or Roman numerals back to a number. Give either number or roman. Use for dates, outlines and puzzles.

Token transfers, Optimism. List a wallet's recent transfers of one ERC-20 token (default USDC) on Optimism, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use op_token_balance. Malformed addresses are rejected with 400, uncharged.

Encoding toolbox. Every common encoding of one text in a single call: Base64 and Base64url, hex, URL component and full-URL encoding, HTML-escaped, ROT13, Unicode code points, UTF-8 byte count and Punycode for international domain names, plus automatic decoding when the input already looks like Base64, hex, URL or HTML encoding. Use to prepare data for headers, URLs and markup, or to work out what an encoded string says.

Hash generator, hash toolbox. Every common hash of one input in a single call: MD5, SHA-1, SHA-256, SHA-384, SHA-512, Keccak-256 (Ethereum), CRC-32, base64 SHA-256, and Subresource Integrity strings (sha256-, sha384-, sha512-) for <script integrity>. Hashes UTF-8 text, or 0x/hex bytes with hex=true. Cheaper than hashing one algorithm at a time. Use for checksums, cache keys, file integrity and comparing digests across systems.

JSON toolbox. Everything about one JSON document in a single call: valid or not with the error's line and column, pretty-printed (optionally with sorted keys), minified with the bytes saved, an inferred JSON Schema, structure statistics (depth, objects, arrays, keys, value types) and the same data as YAML. Up to 200 KB. Cheaper than the separate JSON tools. Use to inspect API responses, clean model output or document a payload.

Research papers, Crossref. Search scholarly literature across journals, conferences, preprints and books: title, authors, year, venue, citation count, DOI link and abstract where available. Optional fromYear filter and up to 20 results per call. Use for research agents, literature reviews, fact-checking a claim against published work, and finding the DOI for a citation.

Token transfers, Polygon PoS. List a wallet's recent transfers of one ERC-20 token (default USDC) on Polygon PoS, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use polygon_token_balance. Malformed addresses are rejected with 400, uncharged.

Sitemap parser, URL extractor. Read one public XML sitemap or sitemap index as structured URLs and source-reported dates. Supports gzip, substring filtering and pagination. Maximum 512 KiB expanded input and 1000 entries. Does not crawl pages or follow child sitemaps. Invalid XML and execution errors are not charged; a valid empty match is charged. Use to find which pages of a docs site to read before calling /extract.

Slugify, make a URL slug. Turn any text into a URL-friendly slug: accents removed (é→e, ß→ss), lower case, non-alphanumerics replaced by a separator (- by default). Use for file names, URLs and IDs.

Text diff, compare two texts. Line-by-line difference between two texts: each line marked as unchanged, removed or added, with counts. Use to see what changed between two versions of a document, config or prompt.

Word count and readability. Count characters, words, sentences and paragraphs, estimate reading and speaking time, and compute the Flesch reading-ease score and grade level for English text. Use to check the length and readability of a draft.

Honeypot token check, token risk. Check a Base token before you swap into it: a high/medium/low risk verdict with named red flags (paused transfers, blacklist, owner-set fees or tax, a mint selector with a live owner, upgradeable proxy, no or thin liquidity, a pair under 7 days old, buys but no sells as a honeypot sign) plus live DexScreener price, liquidity, volume and FDV. Heuristic screening, not a safety guarantee. Use before swapping into an unfamiliar Base token.

Speech to text, transcribe audio. Transcribe speech from an audio file at a public URL using Whisper large-v3-turbo. Returns the transcript text, detected language, duration and word count. Accepts common formats such as MP3, WAV, M4A and OGG up to 5 MB. Use for voice notes, podcast clips, meeting snippets and voice messages.

URL decode. Decode percent-encoded text, treating + as a space when plus=true (form encoding). Use to read encoded links and form data.

URL encode. Percent-encode text for use in a URL query value (encodeURIComponent) and as a full URL (encodeURI). Use when building query strings.

URL parser, parse a URL. Split a URL into protocol, host, port, path, query parameters (as an object), hash and origin, and report whether the host is an IP address. Use to read query parameters or check a link's host.

UUID generator, ID generator. Generate 1 to 100 random version-4 UUIDs from a cryptographic random source. Use for IDs, idempotency keys and test data.

Text classification into labels. Zero-shot classification: give text and 2-20 candidate labels, get the best label, a short reason and a ranking. Use for routing tickets, tagging content, intent detection and moderation queues.

Embeddings, OpenAI compatible. A 1,024-dimension embedding vector for up to 4,000 characters of text in 100+ languages, from BAAI's BGE-M3. Use for semantic search, RAG retrieval, clustering and deduplication.

Extract JSON fields from text. Pull named fields out of unstructured text (emails, invoices, listings, bios) and get them back as a JSON object, with null for anything not present. Use to turn messy text into structured data for an agent.

Keyword extraction. The most important keywords and key phrases of a text, most relevant first. Use for tagging, SEO, search indexing and topic detection.

Summarize text. Summarize up to 12,000 characters of text you send into a few sentences plus bullet key points. Use for long emails, documents, transcripts and tool outputs (for a web page by URL, use /summarize).

Translate text (100 languages). Translate text between about 100 languages with Meta's M2M100 1.2B model. Give the target language as an ISO code such as en, sv, de, fr, es, zh or ja; the source language is optional. Use to localise messages and documents.

Token allowance, Arbitrum ERC-20. ERC-20 token allowance on Arbitrum One: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use arb_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Arbitrum One native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Arbitrum One at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use arb_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Eth call, Arbitrum contract call. Read-only contract call on Arbitrum One (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Arbitrum. Estimate the gas a transaction would use on Arbitrum One (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use arb_gas. A transaction that would revert is 422 with the reason, uncharged.

Arbitrum One gas price. Current gas price on Arbitrum One (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use arb_receipt.

Gas history, Arbitrum gas price. Gas price history on Arbitrum One (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use arb_gas.

Arbitrum One contract check. Check whether a 0x address on Arbitrum One is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Arbitrum One recent event logs. Recent contract event logs on Arbitrum One (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use arb_receipt.

NFT balance, Arbitrum. How many NFTs of one ERC-721 collection a wallet holds on Arbitrum One (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use arb_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Arbitrum. NFT metadata on Arbitrum One: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use arb_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Arbitrum. Owner of an NFT on Arbitrum One: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use arb_nft_balance, for the token's metadata arb_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Arbitrum One account nonce. Read the transaction count (nonce) of a 0x address on Arbitrum One, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use arb_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Arbitrum. Find the implementation behind a proxy contract on Arbitrum One: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Arbitrum One transaction receipt. Transaction receipt on Arbitrum One (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use arb_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Arbitrum. Read one raw storage slot of a contract on Arbitrum One (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use arb_proxy. A malformed address or slot is rejected with 400, uncharged.

Arbitrum One ERC-20 balance. ERC-20 token balance of a wallet on Arbitrum One (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use arb_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Arbitrum One ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Arbitrum One, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use arb_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Arbitrum One. List a wallet's recent transfers of one ERC-20 token (default USDC) on Arbitrum One, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use arb_token_balance. Malformed addresses are rejected with 400, uncharged.

Arbitrum One transaction. Look up an Arbitrum One transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use arb_receipt, for emitted events arb_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Eth call, Base contract call. Read-only contract call on Base (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Base. Estimate the gas a transaction would use on Base (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use base_gas. A transaction that would revert is 422 with the reason, uncharged.

Gas history, Base gas price. Gas price history on Base (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use base_gas.

Base contract check. Check whether a 0x address on Base is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Base recent event logs. Recent contract event logs on Base (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use base_receipt.

NFT balance, Base. How many NFTs of one ERC-721 collection a wallet holds on Base (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use base_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Base. NFT metadata on Base: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use base_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Base. Owner of an NFT on Base: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use base_nft_balance, for the token's metadata base_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Proxy implementation, Base. Find the implementation behind a proxy contract on Base: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Base transaction receipt. Transaction receipt on Base (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use base_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Base. Read one raw storage slot of a contract on Base (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use base_proxy. A malformed address or slot is rejected with 400, uncharged.

Base ERC-20 balance. ERC-20 token balance of a wallet on Base (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use base_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Base ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Base, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use base_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

SWIFT code, BIC validation. Check a BIC (SWIFT code) against the ISO 9362 structure: institution code, a real country code with its name, location code, branch code, whether it is the head office (XXX or 8 characters), a test BIC or a passive participant, and the 11-character form. Computed locally; it checks the format and country, not whether the bank exists. Use before an international transfer or to clean payment data; for account numbers use validate_iban.

Bitcoin (BTC) price. Current Bitcoin (BTC) spot price in USD, EUR, GBP, CAD, CHF, AUD and JPY, averaged across major exchanges, with the number of satoshis per US dollar and the time of the price. Use to convert between sats and fiat, to value a Bitcoin or Lightning payment, or to check the BTC price before a trade.

Company data lookup. Facts about a company by name or Wikidata ID: official website, founding date, country, headquarters, industries, CEO, founders, parent, employee count, stock tickers and exchanges, and LEI, with Wikidata and Wikipedia links. Public domain data (CC0), best for established and listed companies. No match returns 404, uncharged. Use to enrich leads, vendors and counterparties or ground an answer about a company.

Smart contract risk check. Check a Base contract before you approve or call it: a low to critical risk tier with named flags (proxy, proxy with no implementation, tiny bytecode, zero token supply), plus bytecode size, the EIP-1967 implementation slot and ERC-20 owner, renounced and paused reads. Unreadable reads are null; EOAs return not-applicable. Limited heuristics, not a full security audit. Use before approving a spender or calling an unfamiliar Base contract.

Country info, country facts. Facts about a country by ISO code (SE, SWE, US…): official World Bank name, ISO-2 and ISO-3 codes, region, income level, capital city and its coordinates, and the latest population figure with its year (World Bank open data). Use to enrich records with country data.

Recent earthquakes, USGS data. Recent earthquakes worldwide from the US Geological Survey: magnitude, place, time, depth, coordinates, tsunami flag and USGS link, for the past day or week, filtered by minimum magnitude (2.5, 4.5 or significant). Use for alerts, news and travel checks.

Token allowance, Ethereum ERC-20. ERC-20 token allowance on Ethereum: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use eth_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Eth call, Ethereum contract call. Read-only contract call on Ethereum (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Ethereum. Estimate the gas a transaction would use on Ethereum (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use eth_gas. A transaction that would revert is 422 with the reason, uncharged.

Gas history, Ethereum gas price. Gas price history on Ethereum (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use eth_gas.

Ethereum contract check. Check whether a 0x address on Ethereum is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Ethereum recent event logs. Recent contract event logs on Ethereum (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use eth_receipt.

NFT balance, Ethereum. How many NFTs of one ERC-721 collection a wallet holds on Ethereum (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use eth_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Ethereum. NFT metadata on Ethereum: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use eth_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Ethereum. Owner of an NFT on Ethereum: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use eth_nft_balance, for the token's metadata eth_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Ethereum account nonce. Read the transaction count (nonce) of a 0x address on Ethereum, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use eth_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Ethereum. Find the implementation behind a proxy contract on Ethereum: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Ethereum transaction receipt. Transaction receipt on Ethereum (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use eth_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Ethereum. Read one raw storage slot of a contract on Ethereum (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use eth_proxy. A malformed address or slot is rejected with 400, uncharged.

Ethereum ERC-20 balance. ERC-20 token balance of a wallet on Ethereum (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use eth_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Ethereum ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Ethereum, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use eth_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Ethereum transaction. Look up an Ethereum transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use eth_receipt, for emitted events eth_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Signature verify, EIP-191. Verify an Ethereum personal_sign (EIP-191) signature: recover the address that signed a message and, given an expected address, say whether it matches. Works for ordinary wallets (EOAs); smart-contract wallets sign by ERC-1271, which this offline check does not cover. Use for sign-in-with-wallet, proving wallet ownership or checking a signed order. A malformed signature is 400, uncharged.

RSS feed reader. Read a public RSS 2.0, RSS 1.0 or Atom feed and get the feed title, link and description plus its newest items: title, link, date (ISO 8601), short plain-text summary, author and id. Up to 50 items, feeds up to 2 MB. Lenient with real-world feeds; a page that is not a feed returns 422, uncharged. Use to follow news, blogs, release notes or podcasts without scraping pages.

HMAC signature. Compute an HMAC of a message with a key using SHA-256 (default), SHA-1, SHA-384 or SHA-512, in hex and base64. Use to check webhook signatures. The key is used only for this call and is not stored.

Public holidays by country. Nationwide public holidays for a year in the US (federal), UK (England and Wales), Sweden, Germany, France, Norway, Denmark and Finland: date, local and English name, and the weekday it is observed on where a weekend moves it. Computed from statutory rules for 2024-2100. Use for scheduling, delivery dates and business-day maths.

CIDR calculator. Details of an IPv4 network in CIDR notation: network and broadcast address, first and last usable host, netmask, number of addresses, and whether a given IP falls inside. Use for firewall rules and allowlists.

Liquidity pool check. Check a Base DEX pool before you trade: give a pair address and get the verified DEX, both tokens, reported liquidity, 24h volume and trades, and pair age from DexScreener, or read on Base when it is unavailable, with source and retrieval time. Missing fields are null; an unknown pair returns 404. Market data only, no risk assessment. Use to confirm a pair is real and deep enough before trading; token red flags: token_report.

MIME type for a file. MIME (content) type for a file name or extension, e.g. report.pdf → application/pdf, and whether browsers usually display it inline. Use when uploading or serving files.

Moon phase name, illuminated percentage and age in days for any date, plus the next new and full moon (UTC). Computed locally from the mean synodic month. Use for calendars and night-sky planning.

Crypto news, news headlines. Search current news on any topic, crypto included, and get the latest headlines as JSON: title, URL, snippet, publisher domain and age, from the Brave Search API's news index. 1-20 results per call; freshness limits results to the past day, week or month. Results are for the caller's immediate use only: no storing, resale or model training (Brave API terms). Upstream failures return 503, uncharged. Use when an agent needs current news on a topic.

npm package downloads. Download counts of an npm package for the last day, week and month, from the official npm registry API. Use to judge how widely a dependency is used.

Number to English words. Write a whole number (up to trillions, negatives allowed) out in English words, e.g. for cheques and invoices. Also returns the cheque form with 'and' cents when given a decimal amount. Use when amounts must be written out in full.

Token allowance, Optimism ERC-20. ERC-20 token allowance on Optimism: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use op_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Optimism native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Optimism at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use op_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Eth call, Optimism contract call. Read-only contract call on Optimism (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Optimism. Estimate the gas a transaction would use on Optimism (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use op_gas. A transaction that would revert is 422 with the reason, uncharged.

Optimism gas price. Current gas price on Optimism (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use op_receipt.

Gas history, Optimism gas price. Gas price history on Optimism (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use op_gas.

Optimism contract check. Check whether a 0x address on Optimism is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Optimism recent event logs. Recent contract event logs on Optimism (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use op_receipt.

NFT balance, Optimism. How many NFTs of one ERC-721 collection a wallet holds on Optimism (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use op_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Optimism. NFT metadata on Optimism: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use op_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Optimism. Owner of an NFT on Optimism: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use op_nft_balance, for the token's metadata op_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Optimism account nonce. Read the transaction count (nonce) of a 0x address on Optimism, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use op_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Optimism. Find the implementation behind a proxy contract on Optimism: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Optimism transaction receipt. Transaction receipt on Optimism (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use op_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Optimism. Read one raw storage slot of a contract on Optimism (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use op_proxy. A malformed address or slot is rejected with 400, uncharged.

Optimism ERC-20 balance. ERC-20 token balance of a wallet on Optimism (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use op_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Optimism ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Optimism, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use op_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Optimism transaction. Look up an Optimism transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use op_receipt, for emitted events op_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Crypto research, coin brief. One call to research a single coin traded on Hyperliquid (BTC, ETH, SOL, HYPE and about 200 more): price, 24-hour change, volume and open interest, the funding rate now and over the last 3 days, order-book depth and spread, technical readings on the 4-hour and daily charts (RSI, MACD, moving averages, Bollinger, volatility), and market-wide sentiment (Fear & Greed, attributed). Use before a trade or for a coin brief.

Domain intelligence, enrichment. Company enrichment in one call for any domain: the site's name, description and logo, its tech stack (CMS, frameworks, analytics, hosting), email provider and email security (SPF, DMARC), who hosts the server (IP registry holder), DNS records, and the domain's registrar, age and expiry. Public DNS, RDAP and the home page only. Use for lead enrichment, company research, vendor checks or sales prospecting.

EVM developer utilities toolbox. One call that works out what an EVM value is and converts it every useful way: an address gets its EIP-55 checksum and bytes32 form; a signature its 4-byte selector and event topic; calldata is decoded (ERC-20, NFT, permit, EIP-3009); a bytes32 becomes uint256, address and units; a number converts between wei, gwei, ether (or any decimals) and hex; text gets keccak256. Local, no network. Use for building or debugging contracts and agents.

ID generator, UUID, ULID. Generate unique IDs of every common kind in one call: UUID v4 (random), UUID v7 and ULID (time-ordered, sort by creation), NanoID (21 URL-safe characters) and random base62 and hex strings, up to 20 of each, from the platform's cryptographic random source; and decode the creation time hidden in a ULID or UUID v7. Use for database keys, request and trace IDs, file names or test data.

String utilities. Transform one string every common way at once: camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, path/case, Title Case, Sentence case, upper and lower; a URL slug (accents removed); reversed; trimmed and whitespace-collapsed; and counts of characters, letters, digits, words and lines. Splits identifiers like userIDValue or XMLHttpRequest correctly. Use when naming fields, files and routes or cleaning user input.

Token analysis, token security. One call to analyse an ERC-20 token: name, symbol, decimals and supply, USD price from the deepest Uniswap v3 pool, whether it is an upgradeable proxy and who can upgrade it, and on Base the honeypot and contract risk checks (paused transfers, blacklist, owner fees, mint rights, liquidity). Give a ticker or 0x address and the network (base, eth, arb, op or polygon). Use before buying, listing or accepting an unknown token.

Package risk check. Reports package existence, latest version and release, age, version count, npm weekly downloads, licenses, deprecation and known advisory severity. ok means no listed flags, not a safety guarantee. Supports npm, PyPI, Cargo, Go, Maven and NuGet. Optional exact version adds pinned-version metadata and uses deps.dev advisories; use /package-audit for OSV affected ranges and dated FIRST EPSS CVE estimates. Use before adding a dependency.

Dependency audit. Check up to 10 public dependencies, optionally pinned to exact versions, for advisory IDs, OSV affected/fixed ranges and dated FIRST EPSS CVE estimates. Scoped npm names supported. Detail and subrequest caps apply; omitted details and incomplete coverage are explicit. Missing evidence is unknown, not zero risk. Automated signals, not a safety guarantee. See the buying guide for limits. Use before installing or upgrading dependencies.

Ping, x402 payment test. A paid round-trip check: returns pong and the server time. Use to test that an x402 wallet, client or MCP setup can pay and receive a result.

Token allowance, Polygon ERC-20. ERC-20 token allowance on Polygon PoS: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use polygon_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Polygon PoS native balance. Native POL balance (eth_getBalance) of any 0x wallet address on Polygon PoS at the latest block, in wei and in POL. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use polygon_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Eth call, Polygon contract call. Read-only contract call on Polygon PoS (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Polygon. Estimate the gas a transaction would use on Polygon PoS (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and POL. Give to, plus value in POL and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use polygon_gas. A transaction that would revert is 422 with the reason, uncharged.

Polygon PoS gas price. Current gas price on Polygon PoS (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain POL transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use polygon_receipt.

Gas history, Polygon gas price. Gas price history on Polygon PoS (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use polygon_gas.

Polygon PoS contract check. Check whether a 0x address on Polygon PoS is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Polygon PoS recent event logs. Recent contract event logs on Polygon PoS (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use polygon_receipt.

NFT balance, Polygon. How many NFTs of one ERC-721 collection a wallet holds on Polygon PoS (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use polygon_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Polygon. NFT metadata on Polygon PoS: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use polygon_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Polygon. Owner of an NFT on Polygon PoS: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use polygon_nft_balance, for the token's metadata polygon_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Polygon PoS account nonce. Read the transaction count (nonce) of a 0x address on Polygon PoS, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use polygon_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Polygon. Find the implementation behind a proxy contract on Polygon PoS: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Polygon PoS transaction receipt. Transaction receipt on Polygon PoS (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in POL, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use polygon_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Polygon. Read one raw storage slot of a contract on Polygon PoS (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use polygon_proxy. A malformed address or slot is rejected with 400, uncharged.

Polygon PoS ERC-20 balance. ERC-20 token balance of a wallet on Polygon PoS (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use polygon_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Polygon PoS ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Polygon PoS, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use polygon_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Polygon PoS transaction. Look up a Polygon PoS transaction by hash: sender, recipient, value in POL, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use polygon_receipt, for emitted events polygon_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Password generator. Generate strong random passwords or passphrase-style strings: choose length and character sets, from a cryptographic random source. Generated on demand; nothing is stored or logged. Use when creating accounts or secrets.

Sanctions check (OFAC screening). OFAC sanctions screen for a crypto wallet before you pay it: checks an address (BTC, ETH, USDT, TRX and more) or a person or company name against the US Treasury SDN list, aliases included. Returns a verdict (block on a listed address, review on a name match, pass), each match with SDN ID, programs and match strength, and the list date. A screening aid, not legal advice. Use before paying; full verdict with wallet risk: check_counterparty.

Website screenshot. Render any public web page in a real headless Chrome browser, with JavaScript executed, and get a JPEG screenshot (1280 px wide, base64) plus the final URL, HTTP status and page title. Set fullPage=true to capture up to 4000 px of page height. Use for visual checks, page previews, monitoring and feeding pages to vision models.

SEC filings (EDGAR) by ticker. Latest SEC EDGAR filings for a US-listed company by stock ticker or CIK: form (10-K, 10-Q, 8-K, 4, S-1…), filing and report dates, accession number, document description and a direct link, newest first, optionally only one form type. Plus company name, CIK and industry (SIC). Public SEC data. Use to check a company's latest annual or quarterly report, insider trades (form 4) or material events (8-K).

Compare semantic versions. Compare two semantic versions (1.2.3, pre-releases like 2.0.0-rc.1 handled by the SemVer rules) and get which is newer, plus the next major, minor and patch versions of the first. Use to decide whether an upgrade is a major change.

Sunrise sunset times, day length. Sunrise, sunset, solar noon, civil dawn and dusk (UTC) and day length for any place and date, computed with the standard solar equations; handles polar day and night. No outside service. Use for photography, events and outdoor planning.

Extract emails, URLs and more. Find all email addresses, URLs, phone-number-like strings, hashtags, @mentions and numbers in a text, each list de-duplicated. Use to pull contacts and links out of scraped pages or messages.

Timezone converter, current time. The exact current date and time in any IANA time zone (UTC when none is given), with UTC offset, weekday, abbreviation and Unix timestamp, daylight saving time handled. Optionally convert a given moment into up to 10 other time zones in the same call. Use when an agent needs to know what time it is, to schedule across time zones or to turn a timestamp into local time. A bare GET is the smallest paid end-to-end test of an x402 or MPP client.

Unit conversion. Convert between units of length, mass, volume (incl. US cups and gallons), temperature (c, f, k), speed, area, data size (kB vs KiB), time, energy and pressure. Example units: km, mi, lb, kg, floz, ml, mph, kn, acre, gib, kwh, psi. Use when exact conversions matter.

Unix timestamp converter. Convert a Unix timestamp (seconds or milliseconds, detected automatically) to ISO date and time, or an ISO date to a Unix timestamp. Without input, returns the current time in both forms. Use to read timestamps in logs and APIs.

Website metadata, link preview. Fetch a public web page's head and return link-preview metadata: title, description, site name, type, preview image, canonical URL, language, author, published time, favicon, theme colour, and every OpenGraph and Twitter-card field. Reads at most 1 MB and never runs JavaScript. Use to build link previews, label citations or check how a URL will unfurl before sharing it.

IBAN validation. Check an IBAN's format, its country-specific length and its mod-97 check digits, and return it formatted in groups of four. Use before saving bank details or paying out.

ISBN check, validate an ISBN. Check an ISBN-10 or ISBN-13 check digit and convert valid ISBN-10s to ISBN-13. Hyphens and spaces are ignored. Use before cataloguing or ordering books.

Wallet portfolio value. USD value of a wallet on Base, Ethereum, Arbitrum or Optimism: native ETH plus major tokens (USDC and WETH everywhere, the common Base tokens on Base) and up to 20 tokens you add, each priced from its deepest Uniswap v3 pool, read live from the chain. Returns holdings, total and anything that could not be priced. Not a full token inventory. Use to check what a wallet is worth before trading, lending or paying.

Weather forecast. Weather for any city or point on Earth (city name, or latitude and longitude): current temperature in Celsius, conditions (clear, cloudy, rain, snow), precipitation in mm, wind, humidity, cloud cover and air pressure, plus an hourly forecast for up to 48 hours. Data from the Norwegian Meteorological Institute; city names resolve via Wikidata. Use for travel and event planning, logistics, agriculture and any agent that needs the weather.

Wikipedia article summary. Short summary of a Wikipedia article in any language edition: title, one-paragraph extract, description, thumbnail and page URL. Use to ground an agent's answer in a quick, citable fact sheet.

x402 endpoint check. Check an x402 seller before you pay it: decode any public endpoint's 402 payment requirements without paying (v1 body or v2 header) into USD price for native USDC, network, asset, recipient, scheme and timeout, plus a listing-quality score for https resource URL, atomic amount, facilitator minimum, description, Bazaar metadata and output schema. Never signs. Use before buying from an unfamiliar seller or to audit your own x402 listing.

LLM inference, large model. Send a prompt, get an answer from a larger open model: Llama 3.3 70B Instruct (default) or OpenAI gpt-oss-120b, with an optional system prompt, up to 1,024 output tokens and adjustable temperature. Same call as /ai/chat with a stronger model. Use when the 8B model is not enough: reasoning, drafting and Q&A.

A structured Markdown outline (headings and bullet points) of a text you send, or a suggested outline for a topic. Use to plan articles, reports, talks and documentation.

Rewrite text to be more formal, casual, simpler, shorter, friendlier, more professional or more persuasive, keeping the meaning and language. Use to polish emails, replies, product copy and messages.

Positive or negative sentiment of English text with a confidence score, from a DistilBERT model fine-tuned on SST-2. Use to triage reviews, support messages, social posts and replies.

Turn up to 1,000 characters of text into natural speech as an audio file (base64, with its content type), in English, Spanish, French, Chinese, Japanese or Korean, with MeloTTS. Use for voice replies, audio notes, accessibility and phone or chat bots.

Token allowance, Avalanche. ERC-20 token allowance on Avalanche: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use avax_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Avalanche native balance. Native AVAX balance (eth_getBalance) of any 0x wallet address on Avalanche at the latest block, in wei and in AVAX. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use avax_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Avalanche. Latest block number and block details on Avalanche, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use avax_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Avalanche. Read-only contract call on Avalanche (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Avalanche. Estimate the gas a transaction would use on Avalanche (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and AVAX. Give to, plus value in AVAX and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use avax_gas. A transaction that would revert is 422 with the reason, uncharged.

Avalanche gas price. Current gas price on Avalanche (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain AVAX transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use avax_receipt.

Gas history, Avalanche gas price. Gas price history on Avalanche (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use avax_gas.

Avalanche contract check. Check whether a 0x address on Avalanche is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Avalanche recent event logs. Recent contract event logs on Avalanche (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use avax_receipt.

NFT balance, Avalanche. How many NFTs of one ERC-721 collection a wallet holds on Avalanche (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use avax_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Avalanche. NFT metadata on Avalanche: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use avax_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Avalanche. Owner of an NFT on Avalanche: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use avax_nft_balance, for the token's metadata avax_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Avalanche account nonce. Read the transaction count (nonce) of a 0x address on Avalanche, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use avax_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Avalanche. Find the implementation behind a proxy contract on Avalanche: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Avalanche transaction receipt. Transaction receipt on Avalanche (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in AVAX, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use avax_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Avalanche. Read one raw storage slot of a contract on Avalanche (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use avax_proxy. A malformed address or slot is rejected with 400, uncharged.

Avalanche ERC-20 balance. ERC-20 token balance of a wallet on Avalanche (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use avax_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Avalanche ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Avalanche, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use avax_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Avalanche. List a wallet's recent transfers of one ERC-20 token (default USDC) on Avalanche, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use avax_token_balance. Malformed addresses are rejected with 400, uncharged.

Avalanche transaction. Look up an Avalanche transaction by hash: sender, recipient, value in AVAX, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use avax_receipt, for emitted events avax_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

ERC-20 token approval check. Check how much of a wallet's ERC-20 token a spender contract is approved to move on Base: the raw and formatted allowance, the token symbol and decimals, and whether the approval is unlimited. Use before a swap or deposit to see if an approve transaction is needed, and to audit a wallet for risky unlimited approvals.

Base transaction status. Look up any transaction on Base by hash: whether it succeeded, reverted or is still pending, sender and receiver, ETH value, called method id, block number and time, number of confirmations, gas used, gas price and the execution fee paid, and whether it created a contract. Use to confirm that a payment or contract call went through before acting on it.

Token allowance, Berachain. ERC-20 token allowance on Berachain: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use bera_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Berachain native balance. Native BERA balance (eth_getBalance) of any 0x wallet address on Berachain at the latest block, in wei and in BERA. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use bera_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Berachain. Latest block number and block details on Berachain, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use bera_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Berachain. Read-only contract call on Berachain (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Berachain. Estimate the gas a transaction would use on Berachain (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and BERA. Give to, plus value in BERA and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use bera_gas. A transaction that would revert is 422 with the reason, uncharged.

Berachain gas price. Current gas price on Berachain (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain BERA transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use bera_receipt.

Gas history, Berachain gas price. Gas price history on Berachain (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use bera_gas.

Berachain contract check. Check whether a 0x address on Berachain is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Berachain recent event logs. Recent contract event logs on Berachain (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use bera_receipt.

Berachain account nonce. Read the transaction count (nonce) of a 0x address on Berachain, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use bera_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Berachain. Find the implementation behind a proxy contract on Berachain: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Berachain transaction receipt. Transaction receipt on Berachain (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in BERA, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use bera_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Berachain. Read one raw storage slot of a contract on Berachain (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use bera_proxy. A malformed address or slot is rejected with 400, uncharged.

Berachain ERC-20 balance. ERC-20 token balance of a wallet on Berachain (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use bera_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Berachain ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Berachain, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use bera_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Berachain. List a wallet's recent transfers of one ERC-20 token (default USDC) on Berachain, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use bera_token_balance. Malformed addresses are rejected with 400, uncharged.

Berachain transaction. Look up a Berachain transaction by hash: sender, recipient, value in BERA, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use bera_receipt, for emitted events bera_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Balance and activity of any Bitcoin mainnet address (legacy, P2SH or bech32): confirmed balance in sats and BTC, unconfirmed pending amount, total received and sent, and transaction counts. Use for payment verification, checking whether a deposit arrived, and wallet monitoring.

Age calculator. Exact age from a date of birth in years, months and days, total days lived, the weekday of birth, and the date of and days until the next birthday, measured today (UTC) or on any date you give. Use for age checks, forms and anniversaries.

BMI calculator. Body mass index from weight and height in metric (kg, cm) or imperial (lb, in) units, its WHO adult category (underweight, normal weight, overweight, obesity class I-III) and the weight range that counts as normal for that height. For adults; a screening number, not a diagnosis. Use for health, fitness and nutrition apps.

Compound interest calculator. Future value of savings or an investment with compound interest: starting amount, annual rate, years, compounding (yearly, quarterly, monthly or daily) and an optional contribution at the end of each month. Returns the final balance, total contributed, interest earned and the balance after each year. Use for savings goals and investment what-ifs; rates are assumed constant.

Loan and mortgage calculator. Monthly payment of an amortised loan or mortgage from the amount, the annual interest rate and the term, plus the total paid, the total interest and the first months of the repayment schedule (principal, interest and balance). Fixed rate, monthly payments. Use to compare loan offers or plan a mortgage.

Tip calculator. Tip and total for a bill at a tip percentage, split between any number of people, optionally rounding each share up to the next whole amount. Use for receipts, expense apps and group payments.

Token allowance, Celo ERC-20. ERC-20 token allowance on Celo: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use celo_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Celo native balance. Native CELO balance (eth_getBalance) of any 0x wallet address on Celo at the latest block, in wei and in CELO. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use celo_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Celo. Latest block number and block details on Celo, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use celo_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Celo contract call. Read-only contract call on Celo (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Celo. Estimate the gas a transaction would use on Celo (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and CELO. Give to, plus value in CELO and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use celo_gas. A transaction that would revert is 422 with the reason, uncharged.

Celo gas price. Current gas price on Celo (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain CELO transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use celo_receipt.

Gas history, Celo gas price. Gas price history on Celo (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use celo_gas.

Celo contract check. Check whether a 0x address on Celo is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Celo recent event logs. Recent contract event logs on Celo (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use celo_receipt.

NFT balance, Celo. How many NFTs of one ERC-721 collection a wallet holds on Celo (balanceOf), with the collection's name and symbol. Use to check a holder before a token-gated action or to see whether a wallet still holds a collection; for who holds one token id use celo_nft_owner. Both inputs are 0x addresses; a missing contract is 404, a contract that is not ERC-721 422, both uncharged.

NFT metadata, Celo. NFT metadata on Celo: the token URI of one ERC-721 token id (tokenURI) and the JSON it points to (name, description, image, attributes), read from data: URIs, https or ipfs:// (through ipfs.io). Strings over 1,000 characters, such as on-chain SVG images, are shortened. Use to show or check what an NFT is; for its owner use celo_nft_owner. A token that does not exist is 422, uncharged; unreachable metadata is reported in metadataError.

NFT owner, Celo. Owner of an NFT on Celo: the wallet that holds one ERC-721 token id right now (ownerOf), plus the collection's name and symbol. Use to verify who holds an NFT before a trade, a mint gate or an airdrop; for how many a wallet holds use celo_nft_balance, for the token's metadata celo_nft_metadata. A missing contract is 404, a token that does not exist 422, both uncharged.

Celo account nonce. Read the transaction count (nonce) of a 0x address on Celo, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use celo_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Celo. Find the implementation behind a proxy contract on Celo: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Celo transaction receipt. Transaction receipt on Celo (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in CELO, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use celo_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Celo. Read one raw storage slot of a contract on Celo (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use celo_proxy. A malformed address or slot is rejected with 400, uncharged.

Celo ERC-20 balance. ERC-20 token balance of a wallet on Celo (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use celo_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Celo ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Celo, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use celo_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Celo. List a wallet's recent transfers of one ERC-20 token (default USDC) on Celo, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use celo_token_balance. Malformed addresses are rejected with 400, uncharged.

Celo transaction. Look up a Celo transaction by hash: sender, recipient, value in CELO, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use celo_receipt, for emitted events celo_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Fast check of a payee before an agent pays it: OFAC SDN match on the address, account type (wallet, delegated wallet or contract) and nonce on Base, Ethereum, Arbitrum, Optimism or Polygon, and optionally the payee domain's age and trust flags. One block, review or pass verdict with reasons. Screening aid, not legal advice. Use before an x402 or USDC payment to an unfamiliar address; holdings and wallet heuristics: check_counterparty.

x402 audit of a seller. Audit an x402 seller before an agent buys from it: decodes the endpoint's 402 terms without paying, OFAC-screens each payTo address, reads its account type and nonce on the payment network, checks the seller domain's age and trust flags, and flags non-USDC assets and high prices. One block, review or pass verdict with reasons. Never signs. Screening aid, not legal advice. Use before the first payment to an unfamiliar x402 seller.

Flip one or more fair coins using a cryptographic random source. Returns each result and the totals. Use for fair decisions and games.

Color palette generator. Build a colour palette from one hex colour: complementary, analogous, triadic, split-complementary and tetradic harmonies (hue rotations at the same saturation and lightness), plus six shades from light to dark, all as hex codes, with the base colour's HSL. Use for UI themes, charts, brand kits or slide decks; to check text readability on a colour use color_contrast.

Fear and greed index, crypto. The Crypto Fear & Greed Index (0 = extreme fear, 100 = extreme greed) from alternative.me: today's value and label, the change against 1, 7 and 30 days ago, the low, high and average over the window, and the daily history (up to 90 days, default 30). Updated once a day. Use as a market-sentiment input for a trading agent, a dashboard or a daily brief; for live prices use price_token.

Markdown table from CSV. Convert CSV (comma, semicolon, tab or pipe, detected automatically; quoted fields supported) into a GitHub-flavoured Markdown table, with number columns right-aligned, pipes escaped and line breaks kept as <br>. Up to 100 KB. Use to show spreadsheet data in a README, chat reply, issue or report; for JSON use csv_to_json.

Roll dice in standard notation such as 2d6+3 or 1d20, up to 100 dice of up to 1000 sides, with a cryptographic random source. Returns every roll, the modifier and the total. Use for tabletop games and simulations.

Check a Dockerfile (up to 8,000 characters) for common security and image-size problems: unpinned or :latest base images, running as root, piping downloads into a shell, sensitive values baked into ENV or ARG, ADD from URLs, apt and pip cache left in layers, sudo, chmod 777 and an exposed SSH port. Returns each finding with its line, a severity and a fix, plus a score. Use before building or shipping an image.

Domain intelligence in one call: DNS records (A, AAAA, CNAME, MX, NS, TXT, CAA), DNSSEC status, registrar, registration and expiry dates with domain age in days (RDAP/WHOIS), and email authentication (SPF and DMARC records and policies, whether the domain accepts mail). Use for lead qualification, phishing and trust checks, and deliverability audits. For a trust verdict with named flags use domain_report.

Returns the message you send, with its length and the server time. Use to test an x402 client, payment flow or agent tool wiring end to end.

Address checksum (EIP-55). Validate an EVM address and return its EIP-55 checksummed form, saying whether the input was all lower case, all upper case, correctly checksummed or mixed case with a wrong checksum (a likely typo). Works for every EVM chain. Use before sending funds or storing an address; for whether it is a contract use <chain>_is_contract.

Decode calldata. Decode EVM transaction calldata into the function and its arguments with viem: give the function signature (transfer(address,uint256)), or leave it out to try common ERC-20, ERC-721, ERC-1155, WETH, permit and multicall functions by selector. Numbers come back as decimal strings. Use to read what a pending or past transaction does before signing; get calldata from eth_tx. A selector that does not match is 422, uncharged.

Web page to Markdown, rendered. Same output as /extract, but the page is first rendered in a real browser, so single-page apps and pages that build their content with JavaScript come back with their text instead of an empty shell. Waits for the network to settle (up to 15 seconds). Public pages only; no login. Use when /extract returns EXTRACTION_EMPTY or too little text for a page you can read in a browser.

Distance between coordinates. Great-circle distance between two latitude/longitude points (haversine on the mean earth radius) in kilometres, miles and nautical miles, plus the initial compass bearing and the midpoint. Accurate to about 0.5% against the ellipsoid. Use for delivery radius, travel and proximity checks, or sorting places by distance; for coordinates of a place name use geocode first.

Token allowance, Gnosis ERC-20. ERC-20 token allowance on Gnosis: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use gnosis_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Gnosis native balance. Native xDAI balance (eth_getBalance) of any 0x wallet address on Gnosis at the latest block, in wei and in xDAI. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use gnosis_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Gnosis. Latest block number and block details on Gnosis, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use gnosis_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Gnosis contract call. Read-only contract call on Gnosis (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Gnosis. Estimate the gas a transaction would use on Gnosis (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and xDAI. Give to, plus value in xDAI and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use gnosis_gas. A transaction that would revert is 422 with the reason, uncharged.

Gnosis gas price. Current gas price on Gnosis (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain xDAI transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use gnosis_receipt.

Gas history, Gnosis gas price. Gas price history on Gnosis (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use gnosis_gas.

Gnosis contract check. Check whether a 0x address on Gnosis is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Gnosis recent event logs. Recent contract event logs on Gnosis (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use gnosis_receipt.

Gnosis account nonce. Read the transaction count (nonce) of a 0x address on Gnosis, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use gnosis_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Gnosis. Find the implementation behind a proxy contract on Gnosis: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Gnosis transaction receipt. Transaction receipt on Gnosis (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in xDAI, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use gnosis_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Gnosis. Read one raw storage slot of a contract on Gnosis (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use gnosis_proxy. A malformed address or slot is rejected with 400, uncharged.

Gnosis ERC-20 balance. ERC-20 token balance of a wallet on Gnosis (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use gnosis_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Gnosis ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Gnosis, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use gnosis_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Gnosis. List a wallet's recent transfers of one ERC-20 token (default USDC) on Gnosis, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use gnosis_token_balance. Malformed addresses are rejected with 400, uncharged.

Gnosis transaction. Look up a Gnosis transaction by hash: sender, recipient, value in xDAI, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use gnosis_receipt, for emitted events gnosis_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Token allowance, HyperEVM ERC-20. ERC-20 token allowance on HyperEVM: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use hyperevm_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

HyperEVM native balance. Native HYPE balance (eth_getBalance) of any 0x wallet address on HyperEVM at the latest block, in wei and in HYPE. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use hyperevm_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, HyperEVM. Latest block number and block details on HyperEVM, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use hyperevm_gas. A block that does not exist yet returns 404, uncharged.

Eth call, HyperEVM contract call. Read-only contract call on HyperEVM (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, HyperEVM. Estimate the gas a transaction would use on HyperEVM (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and HYPE. Give to, plus value in HYPE and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use hyperevm_gas. A transaction that would revert is 422 with the reason, uncharged.

HyperEVM gas price. Current gas price on HyperEVM (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain HYPE transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use hyperevm_receipt.

Gas history, HyperEVM gas price. Gas price history on HyperEVM (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use hyperevm_gas.

HyperEVM contract check. Check whether a 0x address on HyperEVM is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

HyperEVM recent event logs. Recent contract event logs on HyperEVM (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use hyperevm_receipt.

HyperEVM account nonce. Read the transaction count (nonce) of a 0x address on HyperEVM, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use hyperevm_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, HyperEVM. Find the implementation behind a proxy contract on HyperEVM: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

HyperEVM transaction receipt. Transaction receipt on HyperEVM (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in HYPE, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use hyperevm_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, HyperEVM. Read one raw storage slot of a contract on HyperEVM (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use hyperevm_proxy. A malformed address or slot is rejected with 400, uncharged.

HyperEVM ERC-20 balance. ERC-20 token balance of a wallet on HyperEVM (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use hyperevm_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

HyperEVM ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on HyperEVM, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use hyperevm_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

HyperEVM transaction. Look up a HyperEVM transaction by hash: sender, recipient, value in HYPE, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use hyperevm_receipt, for emitted events hyperevm_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Token allowance, Ink ERC-20. ERC-20 token allowance on Ink: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use ink_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Ink native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Ink at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use ink_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Ink. Latest block number and block details on Ink, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use ink_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Ink contract call. Read-only contract call on Ink (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Ink. Estimate the gas a transaction would use on Ink (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use ink_gas. A transaction that would revert is 422 with the reason, uncharged.

Ink gas price. Current gas price on Ink (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use ink_receipt.

Gas history, Ink gas price. Gas price history on Ink (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use ink_gas.

Ink contract check. Check whether a 0x address on Ink is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Ink recent event logs. Recent contract event logs on Ink (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use ink_receipt.

Ink account nonce. Read the transaction count (nonce) of a 0x address on Ink, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use ink_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Ink. Find the implementation behind a proxy contract on Ink: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Ink transaction receipt. Transaction receipt on Ink (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use ink_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Ink. Read one raw storage slot of a contract on Ink (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use ink_proxy. A malformed address or slot is rejected with 400, uncharged.

Ink ERC-20 balance. ERC-20 token balance of a wallet on Ink (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use ink_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Ink ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Ink, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use ink_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Ink. List a wallet's recent transfers of one ERC-20 token (default USDC) on Ink, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use ink_token_balance. Malformed addresses are rejected with 400, uncharged.

Ink transaction. Look up an Ink transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use ink_receipt, for emitted events ink_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

JSON schema from example. Infer a JSON Schema (draft 2020-12) from an example JSON value: types, nested object properties, required keys, array item shapes merged across all items, and string formats (date-time, date, email, uri, uuid). Use to document an API response or to validate later data against the same shape.

JSON to YAML. Convert a JSON value into a YAML document (block style, no line folding), for config files, Kubernetes manifests, GitHub Actions or docs that humans edit. Up to 100 KB of JSON. Use when a tool or person wants YAML; for the reverse use yaml_to_json. Invalid JSON is a 400, uncharged.

Token allowance, Linea ERC-20. ERC-20 token allowance on Linea: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use linea_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Decode a BOLT11 Lightning Network invoice without paying it: network, amount in sats and BTC, description, payment hash, creation time, expiry time and whether it has already expired. Use to check what an invoice asks for before an agent pays it.

Ask a yes-or-no question and get one of the 20 classic Magic 8-Ball answers, chosen at random. For fun only. Use for games and chat bots.

MCP server check, inspector. Inspect a remote MCP server over streamable HTTP: whether it answers initialize, its name, version, protocol version and capabilities, whether it needs sign-in (OAuth or another 401 challenge), and its tools with names, titles, descriptions and input parameters, plus prompt and resource counts. Read-only: it lists, never calls a tool. Use to vet an MCP server before adding it to an agent, or to check your own after a deploy.

Base gas-cost estimates. Estimates Base gas costs from current fees and priority-fee presets. Fixed gas units (100k simple, 250k complex, 180k liquidity) are typical assumptions, not transaction-specific estimates or quotes. Valid values: standard, high-mev (3x priority fee), low-gas (half); invalid values return HTTP 400 without charge. No transaction simulation, mempool observation, or MEV/sandwich-risk measurement. Use to budget gas for a Base transaction.

Reference facts for paying and reading on Base mainnet: chain id, native USDC contract and decimals, block explorer and public RPC URLs, and the x402 network identifier. Use to configure an x402 or Base client.

API health check. One call to health-check an API endpoint: up or down with status and response time over three requests (min, median, max), the redirect chain, HTTP security headers, whether it is a paid x402 endpoint and what its payment terms are, and the API's OpenAPI document when one is found at the usual places. Cheaper than the tools bought one by one. Use for API monitoring, before integrating a third-party API, or to check your own after a deploy.

Crypto market overview. Market sentiment, prices and signals in one call: the Fear & Greed index with its 7-day change (alternative.me, attributed), the 10 most traded Hyperliquid perpetuals with price, 24-hour change, funding and open interest, technical readings (RSI, MACD, moving averages) for up to three coins, and Bitcoin fee rates. Cheaper than the five tools bought one by one. Use for a daily market brief, a trading agent's context or a dashboard.

Email deliverability check. One call to check a domain's email setup: MX records, SPF and its all-policy, DMARC and its policy, DKIM keys at the common selectors (Google, Microsoft, Mailchimp and others), MTA-STS, TLS-RPT and BIMI, with a 0-100 score, a grade and a list of fixes; optionally also checks one address (syntax, MX, disposable domain). Uses public DNS only and sends no mail. Use before a campaign, when mail lands in spam, or to vet a sender domain.

Gas tracker, multichain gas. One call for current gas prices on Base, Ethereum, Arbitrum, Optimism and Polygon: gas price, base fee and priority fee in gwei and what a plain transfer costs in the native coin and, for the ETH chains, in US dollars (Uniswap ETH price), sorted cheapest first, plus Bitcoin fee rates in sat/vB. Cheaper than the tools bought one by one. Use to pick the cheapest chain, time a transaction or show fees in a wallet.

IP intelligence. One call for everything about an IP address: its type (public, private, loopback, carrier-grade NAT), the registry record (holding organisation, network name and range, registration country, abuse contact) and the reverse DNS name. IPv4 and IPv6. Registration country, not city geolocation. Cheaper than the tools bought one by one. Use to investigate an address in logs, a login or an abuse report.

Location data, place brief. One call for a place by name: its coordinates, country, region, population and elevation (Wikidata), the current weather and a short hourly forecast (MET Norway, CC BY 4.0), today's sunrise, sunset and day length, and facts about its country (capital, region, income level, population). Cheaper than the tools bought one by one. Use for travel planning, event and delivery context, or enriching a city name in a record.

NFT analysis. One call to analyse an NFT: its current owner, its metadata (name, description, image, traits from data:, https or ipfs), how many NFTs of the collection that owner holds, and the collection contract (name, symbol, whether it is an upgradeable proxy). ERC-721 on Base, Ethereum, Arbitrum, Optimism or Polygon. Cheaper than the tools bought one by one. Use before buying, listing or verifying an NFT.

SEO analysis, SEO toolkit. One call for an on-page SEO analysis of a URL: the SEO audit (title and description lengths, canonical, headings, alt text, structured data, score, issues), the top keywords and two-word phrases with their density, the social preview (OpenGraph, Twitter card), the favicon, and robots.txt access with its sitemaps. Server HTML only. Cheaper than the tools one by one. Use before publishing, for an SEO report or to compare a competitor's page.

Text analysis. One call to analyse a text: length, reading time and readability grade, the top keywords and repeated phrases with their density, the emails, links, phone numbers, hashtags and mentions it contains, and a prompt-injection scan for text an agent is about to act on. Up to 20,000 characters, local processing. Cheaper than the four tools bought one by one. Use to review drafts, triage inbound messages or vet scraped content.

Explain transaction, decoded. Explain an EVM transaction in plain words: success or revert, sender and contract, ETH value, fee, the function called (decoded for common ERC-20, ERC-721, WETH, permit and multicall calls), and every token transfer, mint, burn and approval it emitted with amounts and symbols, plus one-line summaries. Base, Ethereum, Arbitrum, Optimism or Polygon. Use to check what a payment or contract call really did before trusting it or reporting it.

Wallet profile. One call to profile an EVM wallet: native and USDC balances on Base, Ethereum, Arbitrum, Optimism and Polygon, transaction counts on Base and Ethereum, whether it is a contract or a plain wallet, its recent USDC transfers on Base, and an OFAC sanctions screen. Cheaper than the tools bought one by one. Use before paying, onboarding or trusting a counterparty wallet; for a single risk verdict use check_counterparty.

Website audit, security audit. One call to audit a website: is it up and how fast, the redirect chain (including whether plain http moves to https), the on-page SEO audit with its score and issues, HTTP security headers and their grade, robots.txt for the page, and the domain's DNS, email authentication and registration age. Server-side HTML only, no JavaScript. Cheaper than the six tools bought one by one. Use before a launch, for a client report or to compare competitors.

Phone number validation. Validate and format a phone number with the libphonenumber rules: whether it is valid and possible, the E.164 form, international and national formatting, country, calling code and line type (mobile, fixed-line, toll-free, VoIP…). Give +country code, or a national number and a two-letter country. Offline: nothing is sent and it does not say the line is in service. Use to clean contact lists or check a number before an SMS.

Latest version, summary, licence, required Python version, home page, release date and number of releases of a Python package on PyPI. Use to check a dependency before installing it.

QR code generator. Generate a QR code for a URL or any text (UTF-8, up to 1,000 characters) as a scalable SVG plus a ready-to-embed data URL, at error correction L, M (default), Q or H. Use to put a link, Wi-Fi string or payment request on a page, label or ticket.

One or more random colours in hex, RGB and HSL, optionally limited to pastel or dark tones. Use for placeholders, avatars and design ideas.

One or more random whole numbers in a range (inclusive), optionally all different, from a cryptographic random source. Use for draws, sampling and games.

Pick one or more items at random (without repeats) from a comma- or line-separated list. Use for raffles, choosing who goes first, or breaking ties fairly.

Shuffle a comma- or line-separated list into a random order (Fisher-Yates with a cryptographic random source). Use for draw orders, seating and playlists.

Split a list of names into a given number of random, evenly sized teams. Use for games, workshops and classrooms.

Regex tester, test. Run a JavaScript regular expression against a text and return every match with its index and capture groups (named groups included). Pattern up to 300 characters, text up to 5,000; patterns with nested quantifiers such as (a+)+ are refused as unsafe, uncharged. Use to check a pattern before using it in code.

Token allowance, Scroll ERC-20. ERC-20 token allowance on Scroll: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use scroll_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Scroll native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Scroll at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use scroll_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Scroll. Latest block number and block details on Scroll, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use scroll_gas. A block that does not exist yet returns 404, uncharged.

8-K filings, SEC material events. Latest Form 8-K current reports for a US-listed company by ticker, name or CIK: filing date, the reported items with their meaning (results of operations, executive departures, material agreements, cybersecurity incidents, bankruptcy and others), accession number and a direct link, newest first. Public SEC EDGAR data. Use to watch a company's material events or check what it disclosed recently.

SEO audit, on-page. On-page SEO audit of one URL: title and meta description with their lengths, canonical, meta robots, H1s and H2 count, images without alt text, lang and viewport, Open Graph and Twitter card tags, JSON-LD blocks, internal and external link counts and word count, plus a list of issues and a 0-100 score. Reads the server's HTML (no JavaScript), up to 1 MB. Use to check a page before publishing or to compare competitors.

Caesar cipher, ROT13. Encode or decode text with a Caesar cipher: every letter A-Z shifted by 1-25 places (13, the default, is ROT13), case kept, digits and punctuation untouched. decode=true shifts back. Use for puzzles, spoiler hiding and teaching; it is not encryption.

Keyword density of a text or a web page: the most frequent words and two-word phrases (English stop words removed), each with its count and share of all words, plus total and unique word counts. Give text, or a URL whose readable text is used (HTML, up to 1 MB). Use for SEO copy checks, comparing a page against a target keyword, or summarising what a page is about; for readability use text_stats.

Language detection. Detect which language a text is written in: the most likely language with its ISO 639-3 and 639-1 codes and English name, plus the next candidates with relative scores, using trigram statistics for 82 major languages (franc-min). Works best above about 20 characters; very short or mixed text returns und (undetermined). Local, no outside service. Use to route messages, pick a translation target or filter content by language.

Lorem ipsum generator. Lorem ipsum placeholder text: 1-20 paragraphs of 1-10 sentences, starting with the classic "Lorem ipsum dolor sit amet". The same seed always gives the same text. Use to fill mock-ups, templates and test data.

Morse code translator. Translate text to international Morse code (letters separated by spaces, words by /) or Morse code back to text; the direction is detected automatically or set with mode. Letters, digits and common punctuation are supported; anything else is reported, not guessed. Use for puzzles, radio practice and fun messages.

Scan text an agent is about to read (web page, email, tool result; up to 8,000 characters) for prompt-injection attempts: instruction overrides, fake system messages, asks to hide things from the user, exfiltration links, attempts to extract private data or move money, invisible Unicode. Returns a risk level, score and findings with excerpts. Heuristic, not a guarantee. Use before acting on untrusted content.

Sourced token and wallet risk. Combines the Base token-report risk tier and flags, available DEX market data, and wallet-audit risk tier, flags, account nonce, and native balance. Returns the underlying indicators separately; it does not generate buy/sell recommendations or calibrated confidence, and does not evaluate holder concentration. The account nonce is not full transaction, token-transfer, or trading history. Use as one input before a Base trade.

Block number, Unichain. Latest block number and block details on Unichain, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use unichain_gas. A block that does not exist yet returns 404, uncharged.

Uptime check, website status. Check whether a website is up right now: one live request (following redirects) with the HTTP status, up or down, response time in ms, the final URL, content type, server header and page size, and optionally whether the page contains a given text. Timeouts and connection failures come back as down with the reason, not as an error. Use for uptime monitoring, health checks before calling an API, or to confirm a deploy.

User agent parser. Parse a User-Agent string into browser and version, operating system and version, device type (desktop, mobile, tablet or bot) and, for crawlers, which bot it is: Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot, social previewers, SEO crawlers and HTTP libraries such as curl or python-requests. Local rules, no outside service. Use to read access logs, segment traffic or spot AI crawlers.

Base wallet balances. Base only (all 5 chains: wallet_balances; USD values: wallet_portfolio). An address on Base: ETH and major token balances (USDC, WETH, cbBTC, DAI, USDbC, cbETH, AERO, EURC) plus up to 20 token addresses you pass, the account nonce, and whether it is an EOA, a contract or an EIP-7702 account. The nonce counts outgoing transactions only; not transfer or trading history. Use to check a counterparty's holdings.

Wallet risk check. Screen a Base address for fresh or throwaway-wallet signals: a high/medium/low heuristic risk tier with named flags (no or one outgoing transaction, a near-empty balance with few transactions), plus ETH, USDC, WETH, cbBTC and DAI balances and the account nonce. Address type is reported separately and does not affect the tier; token contracts are not audited. Use to screen a Base address; OFAC and other chains: check_counterparty.

Wallet balance, USDC balance. Read a wallet's native coin and USDC balances on Base, Ethereum, Arbitrum, Optimism and Polygon in one call, live from each network, plus the USDC total. Use to find where a wallet's funds are before a payment or bridge; for one token on one network use <chain>_token_balance, for all tokens on Base use wallet_portfolio. A network whose nodes do not answer is listed with an error instead of failing the call.

XML to JSON converter. Convert an XML document to JSON: attributes become "@name" keys, text becomes "#text" (or the value itself when an element only holds text), and repeated child elements become arrays. DOCTYPEs and external entities are refused, so nothing outside the document is ever loaded. Up to 100,000 characters. Use to read XML feeds, SOAP responses and config files in an agent.

YAML to JSON. Convert a YAML document (config files, Kubernetes manifests, OpenAPI specs, front matter) into JSON, parsed by the yaml library with anchors and aliases resolved (alias expansion capped against billion-laughs documents) and duplicate keys refused. Up to 100 KB. Use before feeding YAML into a JSON-only tool or schema check; for the reverse use json_to_yaml. Invalid YAML is a 400 with the parser's message, uncharged.

A fair random yes or no, with a cryptographic random source. For quick decisions when the options are equally good. Use to break ties.

Web answer, AI with citations. Answer a question from the live web in one call: a Brave web search, the top result pages read, and an answer written by Llama 4 Scout from those sources only, with inline [n] citations and the source list (title, URL). Says so when the sources do not answer it. Results are for the caller's immediate use only: no storing, resale or model training (Brave API terms). Use when an agent needs a current, sourced answer rather than raw search results.

Fact check, verify a claim. Check a claim against the live web in one call: a Brave search, the top pages read, and a verdict from Llama 4 Scout using those sources only (supported, contradicted, mixed or unverified) with a short explanation, [n] citations and the sources. A model's reading of a few search results, not an editorial fact-check. Results are for immediate use only (Brave API terms). Use to screen a statement before an agent repeats or acts on it.

DeepSeek R1 reasoning model API. Chat with DeepSeek's R1 reasoning model distilled into Qwen 32B (MIT) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 2,048 output tokens; its reasoning is removed from the answer. Also reachable as model "deepseek-r1" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

GPT-OSS 120B chat API. Chat with OpenAI's open-weight gpt-oss-120b reasoning model (Apache 2.0) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 1,024 output tokens. Also reachable as model "gpt-oss-120b" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

GPT-OSS 20B chat API. Chat with OpenAI's open-weight gpt-oss-20b reasoning model (Apache 2.0) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 1,024 output tokens. Also reachable as model "gpt-oss-20b" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

Mistral Small 3.1 chat API. Chat with Mistral AI's Mistral Small 3.1 24B model (Apache 2.0) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 1,024 output tokens. Also reachable as model "mistral-small" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

Qwen2.5 Coder 32B, code LLM API. Chat with Alibaba's Qwen2.5 Coder 32B code model (Apache 2.0) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 1,024 output tokens. Also reachable as model "qwen-coder" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

Qwen3 30B chat API. Chat with Alibaba's Qwen3 30B-A3B mixture-of-experts model (Apache 2.0) through one paid HTTP call: send a prompt and an optional system prompt, get the answer, up to 1,024 output tokens; its reasoning is removed from the answer. Also reachable as model "qwen3-30b" on the OpenAI-compatible /v1/chat/completions. No account or provider key. Use when an agent wants this model by name.

Content moderation, safety check. Classify a text as safe or unsafe with Meta's Llama Guard 3 and name the hazard categories it falls into (violent and non-violent crimes, sexual content, child exploitation, hate, self-harm, weapons, privacy, defamation, elections and others; 14 in all). Up to 8,000 characters. Also available in the OpenAI moderation shape at /v1/moderations. Use to screen user messages, model outputs or content before an agent posts or acts on it.

Rerank documents by relevance. Order up to 50 documents by how well each answers a query, with a relevance score from 0 to 1 (BAAI bge-reranker-base, a cross-encoder). Send documents as a JSON array or one per line; each is read up to 2,000 characters, 40,000 in all. Returns the original index, score and text, best first; top_n keeps only the best. Also available in the Cohere-style shape at /v1/rerank. Use to pick what a model reads after search or vector retrieval.

Barcode generator. Generate a barcode as an SVG image: Code 128 for any printable ASCII text (switching to the compact numeric set for runs of digits, with the mod-103 check symbol), or EAN-13 for 12 or 13 digits (the check digit is computed or verified). Set bar width and height and whether to print the text below. Returns the SVG and a data URL ready for an <img> tag. Use for shipping labels, product codes, tickets or inventory; for QR codes use qr.

Get contents, web contents. Read one to five public web pages in one call and get each one's clean text (or Markdown), title, author and published date where the page declares them, in the request shape search APIs use (urls as a list). Pages are read in parallel; one that cannot be read is listed in statuses with its reason and the rest still answer. Static HTML, Markdown and plain text, up to 20,000 characters a page. Use to read search results in one call.

Contract ABI, verified contract. The verified ABI of a smart contract on Ethereum, Base, Arbitrum, Optimism or Polygon from Sourcify's open verification repository: contract name, compiler, match quality, every function and event signature, the full ABI, and for proxies the implementation contract with its ABI. Optional source=true adds the main source file (up to 20,000 characters). Unverified contracts are an uncharged 404. Use before calling or decoding a contract.

Business days between dates. Count business (working) days between two dates, skipping weekends and public holidays for the US, UK, Sweden, Germany, France, Norway, Denmark or Finland, and list the holidays skipped; or give add=N to get the date N business days after (or before) a date. Other countries count weekends only, and the answer says so. Use for delivery estimates, SLAs, payment terms and payroll dates.

Zodiac sign from a birth date. Western (tropical) zodiac sign with its element, and the Chinese zodiac animal and element of a birth date. The Chinese year is counted from the Gregorian year, so dates in January and early February before Chinese New Year are flagged as possibly the previous animal. Use for profile enrichment, greeting cards, games or horoscope-style content.

Vision model for an image at a public URL: get a detailed description including any visible text, or pass a question to ask something specific about the image. Accepts PNG, JPEG, WebP and GIF up to 3 MB. Use for alt text, OCR-style reading of screenshots, chart reading and content checks.

DNS records lookup. Look up DNS records of a domain over DNS-over-HTTPS (Cloudflare 1.1.1.1): A, AAAA, CNAME, MX, NS, TXT, SOA, CAA, SRV, PTR, DS, DNSKEY or HTTPS, with each answer's TTL, the response code (NOERROR, NXDOMAIN…) and whether DNSSEC validated. Use to check email (MX, SPF in TXT), verify a domain, or debug a DNS change; for whether the change has spread use dns_propagation.

DNS propagation check. Check whether a DNS change has propagated: the same record queried at five public resolvers (Cloudflare, Google, AdGuard, AliDNS and DNSPod), each resolver's answers and TTLs, whether they all agree, and the majority answer. Record types A, AAAA, CNAME, MX, NS, TXT, CAA. Use to see where an old value is still cached after changing a record, moving hosting or setting up email; for one lookup use dns_lookup.

GDP by country, World Bank data. GDP of any country from World Bank data: GDP in current US dollars, annual real GDP growth in % and GDP per capita in US dollars, for the last 1-10 years with the newest year first. Country by ISO code (SE, SWE) or English name. Read from a committed World Bank Open Data snapshot (CC BY 4.0), so every call answers at once; the snapshot date is in the answer. Use for country comparisons, market sizing and macro context.

Inflation rate by country. Inflation rate of any country: annual % change in consumer prices (CPI) from World Bank data, for the last 1-10 years with the newest year first. Country by ISO code (SE, SWE) or English name. Read from a committed World Bank Open Data snapshot (CC BY 4.0), so every call answers at once; the snapshot date is in the answer. Use for real-return, pricing and macro questions.

Population by country. Population of any country from World Bank data: total population, annual population growth in % and the urban share of the population in %, for the last 1-10 years with the newest year first. Country by ISO code (SE, SWE) or English name. Read from a committed World Bank Open Data snapshot (CC BY 4.0), so every call answers at once; the snapshot date is in the answer. Use for market sizing, per-capita figures and demographics.

Unemployment rate by country. Unemployment rate of any country from World Bank data (ILO modelled estimates): total unemployment and youth unemployment (ages 15-24) as % of the labour force, for the last 1-10 years with the newest year first. Country by ISO code (SE, SWE) or English name. Read from a committed World Bank Open Data snapshot (CC BY 4.0), so every call answers at once; the snapshot date is in the answer. Use for labour-market and macro questions.

Reverse geocoding. Turn latitude and longitude into place names: the nearest populated place and the largest one within the radius (usually the town or city the point is in), with country and ISO code, administrative region, population, distance and Wikidata id, plus the other places nearby. Data from Wikidata (CC0). Use to label GPS points, photos, deliveries or IP-derived coordinates; for place name to coordinates use geocode.

Clinical trials search. Search ClinicalTrials.gov studies by condition, intervention or any words, optionally only recruiting ones: NCT id, title, status, phase, conditions, interventions, sponsor, enrollment, start and completion dates, number of locations and countries, and a link. From the ClinicalTrials.gov API (US National Library of Medicine). Information only, not medical advice. Use to find trials for a condition or drug.

Federal Register search. Search the US Federal Register: final rules, proposed rules, notices and presidential documents, newest first, with title, type, agencies, abstract, publication date, comment deadline, effective date and links. Filter by type and agency. From the Federal Register API (US government work). Use to track new regulations or open comment periods on a topic.

HTML table to JSON. Extract every table from an HTML fragment into JSON: header cells become keys and each body row an object (or raw arrays when there is no header row), with captions, colspans repeated and entities decoded. Give the HTML itself (up to 500 KB). Use to turn web or email tables into data an agent can sort and compute on; to fetch a page first use extract.

Crypto candles, OHLCV. Historical price candles (OHLCV) of a Hyperliquid perpetual such as BTC, ETH or SOL: open, high, low, close, volume in coins and trade count per bar, newest last. Intervals 1m, 5m, 15m, 30m, 1h, 4h, 1d, 1w and more; up to 500 bars (default 50). Read from Hyperliquid's public API. Use for charts, backtests, volatility and trend checks, or as context for a trading agent.

Funding rate history. Past hourly funding rates of a Hyperliquid perpetual (BTC, ETH, SOL…): each rate with its premium and time, plus the average rate and its annualised APR over the window. Up to 500 hours back (default 24). Read from Hyperliquid's public API. Use to compare carry over time, spot funding regime changes, or backtest basis and funding-arbitrage strategies; for the current rate use hyperliquid_market.

Technical indicators, RSI, MACD. Technical indicators for a Hyperliquid perpetual (BTC, ETH, SOL…) on closed candles of any interval from 1m to 1w: RSI 14, MACD 12/26/9, SMA 20/50/200, EMA 12/26/50, Bollinger bands 20/2 with %B, ATR 14, annualised realised volatility, and plain readings such as overbought or above the 200 SMA. Computed from Hyperliquid's public candles. Use as context for a trading agent or a market dashboard; not investment advice.

Crypto order book, Hyperliquid. Live order book of a Hyperliquid perpetual (BTC, ETH, SOL, HYPE…): the best bid and ask levels with price, size and order count, the mid price, the spread in USD and basis points, and the summed depth on each side. Up to 20 levels a side (default 10). Read from Hyperliquid's public API. Use to judge liquidity and slippage before a trade, or for market-making and arbitrage checks.

All crypto prices, Hyperliquid. Current mid prices of every Hyperliquid perpetual in one call (BTC, ETH, SOL, HYPE and about 200 more), as a coin-to-price map, or only the coins you name. Read live from Hyperliquid's public API. Use for a quick price snapshot of many coins at once, portfolio marks or a price ticker; for funding and open interest use hyperliquid_market.

Image metadata, EXIF. Read an image's metadata from its URL: format (JPEG, PNG, GIF or WebP), width and height, and for JPEG photos the EXIF data: camera make and model, lens, date taken, exposure, aperture, ISO, focal length, orientation, software and the GPS position (latitude, longitude, altitude) when it was recorded. Up to 15 MB. Use to check where and when a photo was taken, verify an upload, or strip-check images before publishing.

IP lookup. Look up who holds an IPv4 or IPv6 address in the regional internet registries' public RDAP records (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC): the holding organisation, network name and range, allocation type, registration country, abuse contact and registry. Use to see which company or ISP a log or firewall address belongs to. Registration country, not city geolocation. Private and reserved addresses are refused with 400, uncharged.

Linea native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Linea at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use linea_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Linea. Latest block number and block details on Linea, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use linea_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Linea contract call. Read-only contract call on Linea (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Linea. Estimate the gas a transaction would use on Linea (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use linea_gas. A transaction that would revert is 422 with the reason, uncharged.

Linea gas price. Current gas price on Linea (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use linea_receipt.

Gas history, Linea gas price. Gas price history on Linea (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use linea_gas.

Linea contract check. Check whether a 0x address on Linea is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Linea recent event logs. Recent contract event logs on Linea (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use linea_receipt.

Linea account nonce. Read the transaction count (nonce) of a 0x address on Linea, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use linea_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Linea. Find the implementation behind a proxy contract on Linea: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Linea transaction receipt. Transaction receipt on Linea (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use linea_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Linea. Read one raw storage slot of a contract on Linea (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use linea_proxy. A malformed address or slot is rejected with 400, uncharged.

Linea ERC-20 balance. ERC-20 token balance of a wallet on Linea (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use linea_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Linea ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Linea, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use linea_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Linea. List a wallet's recent transfers of one ERC-20 token (default USDC) on Linea, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use linea_token_balance. Malformed addresses are rejected with 400, uncharged.

Linea transaction. Look up a Linea transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use linea_receipt, for emitted events linea_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Token allowance, Mantle ERC-20. ERC-20 token allowance on Mantle: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use mantle_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Mantle native balance. Native MNT balance (eth_getBalance) of any 0x wallet address on Mantle at the latest block, in wei and in MNT. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use mantle_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Mantle. Latest block number and block details on Mantle, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use mantle_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Mantle contract call. Read-only contract call on Mantle (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Mantle. Estimate the gas a transaction would use on Mantle (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and MNT. Give to, plus value in MNT and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use mantle_gas. A transaction that would revert is 422 with the reason, uncharged.

Mantle gas price. Current gas price on Mantle (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain MNT transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use mantle_receipt.

Gas history, Mantle gas price. Gas price history on Mantle (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use mantle_gas.

Mantle contract check. Check whether a 0x address on Mantle is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Mantle recent event logs. Recent contract event logs on Mantle (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use mantle_receipt.

Mantle account nonce. Read the transaction count (nonce) of a 0x address on Mantle, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use mantle_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Mantle. Find the implementation behind a proxy contract on Mantle: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Mantle transaction receipt. Transaction receipt on Mantle (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in MNT, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use mantle_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Mantle. Read one raw storage slot of a contract on Mantle (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use mantle_proxy. A malformed address or slot is rejected with 400, uncharged.

Mantle ERC-20 balance. ERC-20 token balance of a wallet on Mantle (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use mantle_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Mantle ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Mantle, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use mantle_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Mantle. List a wallet's recent transfers of one ERC-20 token (default USDC) on Mantle, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use mantle_token_balance. Malformed addresses are rejected with 400, uncharged.

Mantle transaction. Look up a Mantle transaction by hash: sender, recipient, value in MNT, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use mantle_receipt, for emitted events mantle_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Math expression calculator. Evaluate an arithmetic expression safely (parsed, never executed as code): + - * / % ^ and **, parentheses, factorial !, constants pi, e and tau, and functions sqrt, cbrt, abs, round, floor, ceil, exp, ln, log (base 10), log2, sin, cos, tan, asin, acos, atan (radians), min, max and pow. Up to 500 characters. Use when an agent needs exact arithmetic instead of guessing, for prices, unit maths or formulas.

Statistics of numbers. Descriptive statistics for a list of numbers: count, sum, mean, median, mode, min, max, range, population and sample variance and standard deviation, quartiles with IQR, and the 90th, 95th and 99th percentiles (linear interpolation). Up to 10,000 numbers, comma or space separated. Use to summarise measurements, latencies, prices or scores without a spreadsheet.

Agent memory, delete a key. Delete the value saved under a key in your namespace now, before it expires. Answers deleted: false when there was nothing to delete. Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to forget a fact or clear task state.

Agent memory, recall. Read the value saved under a key in your namespace with /memory/set, with when it was saved and when it expires. A key that was never saved or has expired is a 404 and is not charged. Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to recall what an agent saved in an earlier run.

Agent memory, list keys. List up to 100 keys saved in your namespace, optionally only those starting with a prefix, with their size, save time and expiry; pass the returned cursor for the next page. Values are not included (read them with /memory/get). Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to see what an agent has saved.

Agent memory, save. Save a value (up to 8,000 characters of text or JSON) under a key in your own namespace, so an agent can remember facts, preferences or task state between runs. Overwrites an existing key; expires after 1 to 30 days (default 30). Values are kept until they expire (at most 30 days) or are deleted; reads anywhere may lag a write made elsewhere by up to a minute. Use to persist what an agent learned for a later call to memory_get.

OpenAPI spec summary. Read an OpenAPI 3 or Swagger 2 document (JSON or YAML, up to 2 MB) from a URL and summarise it for an agent: title, version, description, servers, auth schemes, operation count by method, tags, which operations are paid (402 or x-payment-info) or deprecated, and up to 150 operations with method, path, summary and operationId. Use before calling an unfamiliar API, to pick an endpoint, or to compare APIs.

News sentiment. The news on a topic and its tone in one call: the latest headlines from the Brave News index (title, URL, publisher, age), each with a positive or negative score from a DistilBERT model, and the balance across them. Up to 10 articles from the past day, week or month. Not a market signal. Results are for the caller's immediate use only (Brave API terms). Use for a market mood check, brand monitoring or a news brief.

URL safety check, scam signals. Check a link before an agent opens or pays it: where it really leads (each redirect hop, the final URL), the destination domain's age, registrar and trust flags, HTTPS and security headers, and named risk signals (days-old domain, bare IP host, punycode look-alike, user@host trick, chains across many hosts). Heuristic signals from public facts, not a phishing blocklist. Use to vet links in emails, chats and scraped pages, or a payee's website.

Web research. One call to research a question on the web: a Brave web search, then the text of the top 1-5 result pages, read in parallel and clipped to your length, with titles and URLs. A page that cannot be read is listed with its reason. Results are for the caller's immediate use only: no storing, resale or model training (Brave API terms). Use when an agent needs current, sourced information in one step instead of a search plus several page reads.

Download a public PDF (up to 10 MB) and return its text page by page, with title, author, page count and character counts. Choose a first page and how many pages to read (up to 200) and cap the output with maxChars. Scanned PDFs without a text layer, encrypted files and non-PDF URLs fail uncharged. Use to read papers, invoices, reports and manuals into an agent's context.

USD prices for up to 20 crypto tokens in one call, by ticker (ETH, BTC, USDC, AERO…) or ERC-20 0x address, on Base, Ethereum, Arbitrum or Optimism, each from its deepest Uniswap v3 pool against USDC or WETH, read live from the chain, with pool, reserve and a thin-liquidity flag. Tokens without a pool are listed under unpriced instead of failing the call. Spot prices. Use to value a basket of tokens or refresh a watchlist in one paid call.

API recommendation. Describe a task in plain words and get the best-matching paid API calls for it from a catalog of 320 tools (web search and page reading, LLM chat, token prices and chain reads on 5 networks, sanctions and company checks, weather, finance and utilities): each pick with the exact call URL, required inputs, price, MCP tool name and whether it is in the free calls. Use when an agent needs to find which API to call before paying for one.

Robots.txt check. Read a site's robots.txt and say whether a crawler may fetch a URL, by RFC 9309 rules as Google applies them (most specific user-agent group, longest matching Allow or Disallow, Allow on ties, * and $ wildcards). Returns the deciding rule, the group used, the rule count and the sitemaps listed. A missing robots.txt (4xx) allows everything. Use before scraping or crawling a site politely; for the sitemap URLs themselves use sitemap.

Eth call, Scroll contract call. Read-only contract call on Scroll (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Scroll. Estimate the gas a transaction would use on Scroll (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and ETH. Give to, plus value in ETH and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use scroll_gas. A transaction that would revert is 422 with the reason, uncharged.

Scroll gas price. Current gas price on Scroll (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use scroll_receipt.

Gas history, Scroll gas price. Gas price history on Scroll (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use scroll_gas.

Scroll contract check. Check whether a 0x address on Scroll is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Scroll recent event logs. Recent contract event logs on Scroll (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use scroll_receipt.

Scroll account nonce. Read the transaction count (nonce) of a 0x address on Scroll, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use scroll_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Scroll. Find the implementation behind a proxy contract on Scroll: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Scroll transaction receipt. Transaction receipt on Scroll (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use scroll_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Scroll. Read one raw storage slot of a contract on Scroll (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use scroll_proxy. A malformed address or slot is rejected with 400, uncharged.

Scroll ERC-20 balance. ERC-20 token balance of a wallet on Scroll (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use scroll_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Scroll ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Scroll, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use scroll_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Scroll. List a wallet's recent transfers of one ERC-20 token (default USDC) on Scroll, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use scroll_token_balance. Malformed addresses are rejected with 400, uncharged.

Scroll transaction. Look up a Scroll transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use scroll_receipt, for emitted events scroll_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Web search results. Search the web and get the top results as JSON: title, URL, a short snippet and the page age, from the Brave Search API. 1-20 results per call. Results are for the caller's immediate use only: no storing, resale or model training (Brave API terms). Upstream failures and exhausted daily capacity return 503, uncharged. Pair with /extract to read a result in full. Use when an agent needs current information or sources from the open web.

13F holdings, fund holdings. The latest 13F-HR holdings of an institutional investment manager (hedge fund, mutual fund family, bank) from SEC EDGAR: each position's issuer, class, CUSIP, value in USD, shares and portfolio weight, largest first, plus the report period, total value and position count. Give the filer by name (e.g. Berkshire Hathaway) or CIK. Public SEC data, filed quarterly up to 45 days after the quarter. Use to see what a fund owns.

Insider trading, SEC Form 4. Recent insider trades in a US-listed company from its SEC Form 4 filings: who traded (name and role: director, officer title, 10% owner), date, buy or sell (open-market purchase, sale, award, option exercise, tax withholding), shares, price, dollar value, holding afterwards and whether it was under a 10b5-1 plan. Up to 10 filings, newest first. Public SEC EDGAR data. Use to see whether insiders are buying or selling.

Token allowance, Sei ERC-20. ERC-20 token allowance on Sei: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use sei_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Sei native balance. Native SEI balance (eth_getBalance) of any 0x wallet address on Sei at the latest block, in wei and in SEI. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use sei_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Block number, Sei. Latest block number and block details on Sei, or any block by decimal number: hash, timestamp, transaction count, gas used and limit, base fee in gwei and producer. Use for timestamps and confirmation counts; for current fees use sei_gas. A block that does not exist yet returns 404, uncharged.

Eth call, Sei contract call. Read-only contract call on Sei (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Estimate gas, Sei. Estimate the gas a transaction would use on Sei (eth_estimateGas) and what it would cost at the current gas price, in gas units, gwei and SEI. Give to, plus value in SEI and calldata for a contract call, and the sender when the call depends on it. Use before sending a transaction or to price a batch; for the gas price alone use sei_gas. A transaction that would revert is 422 with the reason, uncharged.

Sei gas price. Current gas price on Sei (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain SEI transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use sei_receipt.

Gas history, Sei gas price. Gas price history on Sei (eth_feeHistory): base fee in gwei for each of the last N blocks (5-100, default 20), how full each block was, and the 10th, 50th and 90th percentile priority fees, with the low, average and high base fee over the window. Use to judge whether fees are rising, pick a priority fee or time a transaction; for the current price alone use sei_gas.

Sei contract check. Check whether a 0x address on Sei is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Sei recent event logs. Recent contract event logs on Sei (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use sei_receipt.

Sei account nonce. Read the transaction count (nonce) of a 0x address on Sei, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use sei_balance. A malformed address is rejected with 400, uncharged.

Proxy implementation, Sei. Find the implementation behind a proxy contract on Sei: reads the EIP-1967 implementation, beacon and admin slots, EIP-1822 (UUPS), the older OpenZeppelin layout and EIP-1167 minimal-proxy bytecode, and names the kind found. Use before trusting or decoding a contract whose code can be swapped by its admin; for a fuller risk verdict use contract_risk. A malformed address is 400; an address without code is 404, both uncharged.

Sei transaction receipt. Transaction receipt on Sei (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in SEI, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use sei_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Storage slot read, Sei. Read one raw storage slot of a contract on Sei (eth_getStorageAt): the 32-byte word, as a number and, when it holds one, as an address. Slot is a decimal index or a 0x 32-byte key (mapping and proxy slots). Use to inspect contract state that has no getter, owners or implementation pointers; for proxies use sei_proxy. A malformed address or slot is rejected with 400, uncharged.

Sei ERC-20 balance. ERC-20 token balance of a wallet on Sei (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use sei_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Sei ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Sei, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use sei_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Token transfers, Sei. List a wallet's recent transfers of one ERC-20 token (default USDC) on Sei, in and out, over the last N blocks (1-2,000, default 1,000): direction, counterparty, amount and transaction, newest first, up to 50. Use to confirm a payment arrived or see what was sent; for the current balance use sei_token_balance. Malformed addresses are rejected with 400, uncharged.

Sei transaction. Look up a Sei transaction by hash: sender, recipient, value in SEI, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use sei_receipt, for emitted events sei_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Token allowance, Sonic ERC-20. ERC-20 token allowance on Sonic: how much a spender may move from an owner's wallet (allowance), raw and in token units, and whether the approval is unlimited. Use to check an approval before a swap or to audit risky open approvals; for the owner's balance use sonic_token_balance. Token is a ticker (USDC, USDT, WETH…) or a 0x contract; a missing contract is 404 and a non-ERC-20 422, both uncharged.

Sonic native balance. Native S balance (eth_getBalance) of any 0x wallet address on Sonic at the latest block, in wei and in S. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use sonic_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.