All projects on Base matching “contracts”

Base token check: send an ERC-20 contract address on Base and get verifiable on-chain facts as JSON (name, supply, owner and whether ownership is renounced, upgradeable proxy, verified source, privileged-function hints such as mint/pause/blacklist, WETH/USDC liquidity on Uniswap V2/V3 and Aerodrome) plus risk flags and a short plain-language summary. Facts only, not financial advice. Does not chec

Verify whether a legal entity exists and is currently registered, from open primary registers: the GLEIF LEI index, US SEC EDGAR and the Australian Business Register (ABN, ACN, GST, status). Call it before naming a company in a contract, invoice or filing, or when you need an identifier (ABN, ACN, LEI, CIK) for a company you know only by name. Returns found, ambiguous, not_found or unknown, cited

Is this token safe to buy? Honeypot detection, rug-pull and scam check for any ERC-20 token contract -- flags can't-sell traps, hidden mints, malicious buy/sell taxes, unverified source, and holder concentration. GoPlus-powered token security scan with risk score 0-100. Not an audit.

Deterministic on-chain structural-safety report for a Base address: contract detection, verification status, proxy/owner/privileged-function analysis. Behavioral signals (age, activity, funding) not yet included. Keyless x402-native payment — no signup, no API key. Score 0-100, higher = structurally safer. See free real samples before paying: GET /samples/index.json

Live UK public-sector tenders from Find a Tender and Contracts Finder in one call. Returns the top 10 matching notices as one-paragraph plain-English briefs with buyer, value, deadline, CPV codes (honest null when the notice carries none) and the official notice link. Searches a 6-hourly refreshed index - no signup with either portal needed.

Simulate one unsigned Base transaction before an agent signs it. Runs eth_call and gas estimation on current chain state, decodes the intent (ERC-20 transfer, approve, NFT setApprovalForAll), flags unlimited approvals, calldata sent to a non-contract, zero-address targets, reverts and destination risk labels such as phishing or sanctions. Returns ALLOW, WARN, BLOCK or INCOMPLETE with findings. No

Use before buying or approving an unknown ERC-20 token on Base. Rule-based check straight from the chain, without AI - contract and proxy (upgradeable?), owner and whether it was renounced, risky owner functions in the bytecode (mint, pause, blacklist, fees, trading switches), owner share of supply and DEX liquidity on Uniswap V2/V3 and Aerodrome in USD. Returns ok, caution or avoid with reasons i

Decide whether to grant an ERC-20, NFT or Permit2 allowance before signing it. Send owner, token, spender and amount, or the unsigned approve, setApprovalForAll or Permit2 calldata. Returns allow, warn, block or unknown with the allowance already on chain, the requested scope and the rule behind it, whether this raises or lowers exposure, and whether the spender is a contract, upgradeable or denyl

Checks whether a signature was made by a claimed EVM address: EIP-191 personal_sign messages, EIP-712 typed data or a raw 32-byte digest, verified by ecrecover for wallets or ERC-1271 isValidSignature for smart-contract wallets (Safe, Coinbase Smart Wallet) on Ethereum, Base, Arbitrum, Optimism or Polygon. Returns validity, method, recovered signer and digest. Free sample: https://onchain-health.m

Profile a Base address in one call instead of four to six lookups. Returns contract or externally owned plus code size, proxy detection across all seven slot layouts including the legacy OpenZeppelin slot Base USDC uses, the resolved implementation, ERC-165 and behavioural ERC-20 detection, token metadata, requested ERC-20 balances, and denylist hits. Answers unknown rather than guessing, and null

Read-only EVM state API for wallet snapshots, ERC-20 balances, token allowances, contract code, block heights, and bounded eth_call reads across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed price: $0.15 USDC on Base for a batch of up to 100 checks. Only submitted checks run. Results are provider-reported RPC data, not cryptographic proofs.

Check whether an approved Base token swap is eligible before supplying a wallet. Returns verified token contracts, indicative output, liquidity sources, fee estimate, warnings, and the exact next action. No custody, signing, or execution.

Smart-contract inspection for any Base token address: which functions exist (mint, pause, blacklist, owner-only), proxy type and admin, verified source, creation block, DEX pool reserves in USD, holder count. Raw facts with sources and timestamps. Information, not investment advice.

Funding rate of a coin's perpetual on Binance, Bybit, OKX and Hyperliquid: raw and annualized, next funding time, mark and index price, basis %, open interest (contracts and USD), cross-venue spread and who pays longs vs shorts.

Federal contractor / vendor competitive intelligence and market-share analysis — who is winning federal contracts in your market. Returns top vendors by total awards, market-concentration analysis, opportunity gaps, and set-aside landscape from USASpending.gov, for business-development and market-intelligence agents.

Analyze a Base Mainnet token contract: block-pinned owner(), ERC-1967 proxy slots, ERC-20 metadata, code hash, best-effort source match and prior-snapshot comparison when available. Free POST /v1/prepare returns report_id; paid GET /v1/report reads it for 0.01 USDC via x402. Not a security audit.

Search open U.S. federal contract opportunities (solicitations, presolicitations, sources sought) from a copy synced from SAM.gov several times a day. Use when you need current government RFPs or bids matching a title keyword, 6-digit NAICS code, small-business set-aside or place-of-performance state. Returns deduplicated JSON: notice ID, title, agency, NAICS, set-aside, posted date, response dead

VAPE exploit_check — Contract verification + proxy-swap surface check. Real on-chain/market data, no simulation.

US federal contract awards, SAM.gov opportunities, agency spend analysis, NAICS sector breakdown. $0.20/report via x402 on Base.

Base wallet lookup / address research API: ETH + USDC balance with USD value (CoinGecko/Coinbase quotes), EOA or smart contract, nonce (tx count), gas base fee, ERC-20 token holdings and recent USDC inflows/outflows with counterparty count for any Base mainnet address. Wallet analytics, portfolio and onchain due diligence for agents. Live public RPC reads at request time; pay per call with x402 US

Current USD price, market cap, 24h volume and 24h change for up to 10 cryptocurrencies by ticker symbol (BTC, ETH, SOL, ...) or for any on-chain token by contract address and chain (ethereum, base, bsc, arbitrum, polygon, optimism, avalanche, solana). Data from CoinGecko.

Screen a supplier list against two registries at once: check up to 100 companies per call, $0.02 per number, and get registration status plus any public-procurement debarment on record. A company can be active and still barred from public contracts, so the summary counts how many are currently debarred. Live Korean National Tax Service and Public Procurement Service data.

SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

Compare an agent's advertised contract with its live x402 challenge and return deterministic proof.

SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

Interzoid Batch Data Enrichment API: enrich up to 100 JSON records per call with AI company intelligence (profiles, parent companies, executives, competitors, buying signals, funding, ESG, gov contracts, tech stacks, NAICS/SIC codes), email, phone, and IP scoring, sales tax, VAT, and customs rates, property data, standardization, translation, or custom fields. 39 functions, 16 languages, processed

Render a PDF. Pass `template` (one of 45 starter slugs: invoice, receipt, contract, certificate, nda, letter, report, quote, purchase-order, lease-agreement, resume, lab-report, boarding-pass, menu, bank-statement, etc.) or `html` (raw Handlebars HTML). Returns application/pdf bytes. $0.006 USDC per render, no API key, no signup. Full catalog: GET /v1/starters (free). Agent docs: https://pdfzen.si

Try with $0.050 in free shared credit once per wallet. No deposit or on-chain transaction; wallet sign-in required. Credit, daily budget and availability apply. Analyze a selected Base token pool: USD liquidity, 24h volume, price change, rule-based observations and an AI summary with sources. For agent market reports, not contract-security checks or investment advice. Paid price: $0.015. Docs: htt

USE WHEN: An autonomous DeFi agent needs to POST { chain, address } to verify smart contract honeypot traps, owner privileges, and pool liquidity.