All projects on Base matching “utility”

Run a deterministic SHA-256, base64 encode/decode, or UUID utility and return structured JSON.

Answers 'What happened at this company lately?': did the CEO or CFO leave, latest earnings, acquisitions, major contracts, cyber incidents, auditor changes, shareholder votes. Returns a US public company's latest 8-K filings from SEC EDGAR as clean text, with event types and the attached press releases (e.g. the full earnings release). Filter by event type and date, or one exact filing; up to 10 e

Test that your x402 client can pay AUN: one call returns a deterministic paid receipt that the purchase was delivered (a liveness check, not downstream business-value proof). Use it as a first test call; once it works, the same client and wallet can call vendor-intelligence (company research), domain-trust-score or web-read-batch with no setup. $0.001 USDC per call on Base.

Research outline 0.01 USDC (first pay · Base). Ladder: free GET /v0/sample-outline.json → POST /v0/outline → brief 0.02. Machine settle: GET /first-buy.json · lander /start · /.well-known/x402.

The current time, or a given time, in one or more IANA time zones, with UTC offset, abbreviation, whether daylight saving time is in effect, and the weekday. Give a local time with from_tz to convert it, handling DST correctly.

Strict Solidity ABI calldata decoder — decode canonical EVM smart-contract function calls or typed values, verify selectors, and reject ambiguous offsets or padding.

Run a regular expression on a text: every match with its position and capture groups (named too), and the text with a replacement applied. RE2 syntax, which runs in linear time (no lookaround or backreferences).

Every SEC filing by one issuer SINCE a cursor - a delta, not a dump. Requires ?since=YYYY-MM-DD AND ?ticker= or ?cik= (cik wins if both). Optional ?forms=10-K,8-K (also matches /A), ?limit=1..200. Errors: 400 missing_since|missing_issuer|bad_since|bad_ticker|bad_cik|bad_limit, 404 unknown_ticker|unknown_cik, 502 edgar_unavailable, 503 rate_limited_locally. AN EMPTY DELTA IS CHARGED: nothing-change

Deterministic JSON evidence checks with signed verification evidence

Lint any x402 endpoint before you pay it: fetches the unpaid 402 challenge (v1 body or v2 PAYMENT-REQUIRED header), decodes price/network/asset/payTo, flags non-USDC assets, testnets, missing bazaar metadata and malformed fields.

Convert an explicit-offset ISO timestamp to an IANA timezone, including historical offsets. Price: $0.002 USDC per call.

Live rates for Hyperliquid's native on-chain borrow-lend market. Answers "what can I earn supplying USDC on Hyperliquid", "what does it cost to borrow HYPE", "how utilized is each reserve". Read straight from the HyperCore reserve precompile over the public HyperEVM RPC: per reserve, borrow APR, supply APR, utilization, loan-to-value, and total supplied/borrowed. Covers the major collateral assets

Details for one on-chain DeFi lending pool (Aave v3, Compound v3, Moonwell, Morpho Blue) by pool id protocol:chain:token_address: supply APY, borrow APY, utilization, TVL and 0-100 risk score. Example: pool_id=aave-v3:base:0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 (Aave Base USDC). Pool ids come from /v1/lookup/yields results. Refreshed about every 30 min

DeFi position and wallet risk snapshot on Base: token balances, account flags, and live Aave v3 collateral, debt, borrowing power, and health factor read directly from the protocol at a specific block, plus derived risk metrics — net equity, LTV utilization, leverage multiplier, health-factor band, and collateral drawdown tolerance (how far collateral can fall before liquidation). For agents asses

Lightweight utility API for agents and operators: DNS lookups, RDAP/WHOIS domain data, HTTP probes, page metadata extraction, cryptographic hashing, JSON validation, scheduled webhooks, and exotic endpoints (Base transaction decode, ENS resolve, USGS earthquakes, cron next-run, TLS certificate report). No shell access; outbound URL tools enforce SSRF protections.

Rooftop solar estimate for a US address: system size, monthly and annual production (NASA POWER), utility rate (EIA-861 2024), installed cost (LBNL Tracking the Sun), payback, 25-year savings and the 2026 federal credit status.

X (Twitter) account metadata for any handle (based_in, source app, username-change count, recent-activity proxy). Utility endpoint.

Mint 5000 PONG tokens for 1 USDC. Returns request ID after payment. Cap: 100k USDC, 100% to LP, no team supply. Pure meme token with no utility. No refunds. Use at your own risk.

LLM inference as a pay-per-call commodity — ask anything (?q=...) and get the first live answer from a multi-provider failover chain (Groq, Gemini, paid tiers when configured). One flat price, any subject, no API keys...

US Treasury par yield curve from 1 month to 30 years (percent) for the latest day or any date since 1990, with 10y-2y and 10y-3m spreads, inversion flag and up to 60 days of history. Use for risk-free rates, discounting, macro analysis or answering where 10-year yields are.

Compound a list of period returns into a total growth factor. Call when multi-period performance rollups from return series you already have. Returns compounded factor and total return as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

Scrapes any webpage and pulls title, description, canonical URL, OpenGraph + Twitter card metadata, headings, and outbound links from a single URL. Server-side rendering; body content rendered as text, raw HTML, or clean markdown, with optional link extraction. Cheerio-based with no headless browser, so it is fast and cheap, ideal for static pages and SSR sites. For JS-heavy SPAs that need a real

Call before trusting or paying a third-party x402 seller: catalog-vs-live integrity -- verify an x402 listing (payee, price, network, service, tags, bazaar block) against the live 402; an endpoint preflight for x402 catalog vs live offers, seller trust and listing consistency so an agent can skip dead or mismatched endpoints (JSON).

Call before trusting or paying a third-party x402 seller: catalog-vs-live integrity -- verify an x402 listing (payee, price, network, service, tags, bazaar block) against the live 402; an endpoint preflight for x402 catalog vs live offers, seller trust and listing consistency so an agent can skip dead or mismatched endpoints (JSON).

Prompt-injection screen for text or a web page an agent is about to read: finds instruction overrides (many languages and obfuscated spellings), fake system or role markers, jailbreak personas, data-exfiltration links, requests for keys or seed phrases, tool, shell, or payment hijacks, and hidden content (invisible Unicode smuggling, zero-width and bidi characters, HTML comments, hidden elements,

invinoveritas /validate — EdgeProof: is a strategy's edge real or curve-fit noise? Get a verdict (likely_real / borderline / overfit) backed by Deflated Sharpe

Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or low vs this week". Returns the latest streamflow (discharge, cfs) and gage height (ft) for one USGS site plus the 7-day min/max range, reading count, site name and coordinates, straight from USGS instantaneous values. Unknown sites 404 before payment. No LLM, no key, public domain.

Roll a dice with any number of faces. Specify faces via ?faces=N query parameter.

Settlement canary: returns a timestamped pong JSON after USDC micropayment. Use to verify x402 client + wallet + facilitator end-to-end.

Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.