the402 x402 endpoint directory

Near-real-time Great Britain national electricity demand outturn from the Elexon Insights (BMRS) open API: 5-minute MW

Latest earthquakes from the USGS real-time catalog (public domain, updated within minutes). Query: ?minmagnitude=4.5&l

Nord Pool day-ahead electricity spot prices (EUR/MWh, 15-min resolution) for the ee, fi, lv and lt bidding zones, from

Headline national CPI, year-on-year growth rate (%), monthly, from the official OECD SDMX API (dataset DSD_PRICES@DF_P

Latest-release metadata from the official PyPI JSON API (live): version, license, requires_python compatibility, requi

Latest 1-minute estimated planetary Kp index from NOAA SWPC, with a boolean storm flag (estimated_kp >= threshold, def

Total US public debt outstanding from the official Treasury Debt to the Penny dataset (FiscalData API, published every

Deterministic Legal Entity Identifier check for regulatory reporting pipelines (EMIR, MiFID II require a valid LEI per

Deterministic ISIN check before routing an order or paying a market-data API: structure regex (2-letter country or XS/

Current levels of the three ECB key interest rates -- main refinancing operations (MRR_FR), deposit facility (DFR) and

Offline validation of intermodal container numbers per ISO 6346: owner code, equipment category (U/J/Z), serial and ch

ERC-20 token metadata on Base — name, symbol, decimals, total supply. Pay-per-call via x402.

Token Signal: low-cost Base token safety, liquidity concentration, holder concentration, market activity, and basic co

Stablecoin intelligence — circulating supply, $1.00 peg deviation and per-chain breakdown (incl. Base) for USDC and ot

Reference model pricing for routing and cost comparison.

Verify the OpenAI-compatible base URL, model list contract, request shape, secret boundary, and next key-pack route be

Build receipt-bound execution policy for x402 payment responses and receipt URLs.

Build a buyer-ready x402 resource shortlist from seller route inventory.

Validate JSON, sort object keys, and return a stable normalized string and hash.

Transaction pre-flight: will it revert (and why), gas, and which tokens/ETH move - before you send. Built for agents.

Retrieves a complete list of supported blockchain networks with their identifiers including network name, chain ID, an

Retrieves a complete list of available vault categorization tags that can be used for filtering and organizing vault d

Retrieves a filtered list of supported assets with their metadata including address, symbol, name, decimals, and netwo

Zero-shot text classification into caller-supplied labels; the result is validated back into your label set so agents

Calculate an RFC 9111-style cache storage, age, freshness, and revalidation decision from supplied HTTP metadata.

Normalize package.json, requirements.txt, or go.mod direct dependencies into deterministic package records and purls.

Turn Authentication-Results and ARC-Authentication-Results headers into structured JSON without making verification cl

Foreign exchange reference rates from the European Central Bank. Base currency plus optional symbols filter. Updated d

Current gas price and latest block for Base or Ethereum mainnet, straight from public RPC. Fresh within 15 seconds. JS

Worldwide reverse geocoding for agents. Convert latitude and longitude into a normalized address, locality, administra

Resolve a Unix timestamp to the exact PulseChain block at or nearest that moment.

DNS and domain intelligence: A/AAAA/CNAME, MX (sorted), NS, TXT, SOA records plus email security posture — SPF record,

Top DeFi yield pools with APY/TVL, filterable by chain (DefiLlama).

Generate a QR code from any text or URL. Returns base64-encoded PNG.

Resolve A/AAAA/MX/TXT/NS/CNAME records for a domain over DNS-over-HTTPS (Google).

Check text for harmful content using OpenAI moderation (omni-moderation-latest). Returns flagged status, category brea

Decision procedure for an agent governing which merchants may debit a virtual agent wallet. Takes a wallet config (har

Post-purchase gate for x402 web automation receipts. Checks payment match against quote, execution proof fields, resul

Is this counterparty safe to pay? Screens the address against the OFAC sanctions list, reads its ERC-8004 reputation w

Liquid / Shopify theme lint: POST {code}, get the bugs with line numbers. Deterministic — never rendered, no AI. Catch

PHP lint: POST {code}, get the bugs back with line numbers. Deterministic static analysis — code is never executed, no

Elixir lint / debug kit: POST {code}, get the bugs back with line numbers. Deterministic static analysis — code is par

Search Font Awesome Free (2000+ icons) by keyword: matches names, labels, and official search terms, ranked. Returns i

Search Japan's official statistics catalog (e-Stat / 政府統計の総合窓口) by keyword — population, prices, trade, labor, and hun

Cheapest tier: headlines only (original + machine-translated title) across all 11 Japan regulatory sources, no summary

1-minute cross-venue spread statistics (bps). WETH/USDC across Uniswap v3 0.05%/0.3% and Aerodrome Slipstream on Base

Paid agent-facing brief on Decision procedure for an agent evaluating a website's self-declared agent operation interf

Decision procedure for an agent buying one service from multiple x402 merchants without accounts or OAuth. Collects of

Decision procedure for an agent that must choose which stablecoin to settle a payment intent in when the merchant acce

Decision procedure for an autonomous agent enforcing refund eligibility and withdrawal processing windows against a me