the402 x402 endpoint directory

Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boun

Bilinear surface elevation from Copernicus DEM GLO-30. The coordinate is validated against the Natural Earth boundary

AiScale News Summary: Summarizes recent news for a topic. Returns structured summaries with source, date, relevance sc

New pool watch: only the Base pools that appeared since your cursor, for agents polling on a schedule

Validate an email address before you accept a signup or send to it: RFC 5322 syntax, whether the domain resolves and i

New token radar on Base with a liquidity floor: pools created in the last 24 hours that already hold real liquidity; ?

Scores how similar two values are on a 0-100 scale for fuzzy matching and dedup confidence. Compares two values of a g

Compares two submitted sample sets feature by feature and returns deterministic drift metrics. Continuous features are

Deep dive on one crypto macro indicator: definition, formula, exact status thresholds, current value, recent stats and

Generate deterministic fake test rows from a field->type spec plus a seed (names, emails, phones, addresses, dates, in

Generate a QR code (PNG base64) from text/URL/WiFi/vCard with size and error-correction control.

Generate a QR code (PNG base64) from text/URL/WiFi/vCard with size and error-correction control.

Country, city, region, ISP/org, and lat/lon for an IPv4/IPv6 address (ipwho.is, keyless).

Decode EVM smart-contract transaction calldata into the function name and typed parameters. Supply an ABI (from /api/c

Fetch a URL and return every response header plus a security analysis: HSTS, CSP, X-Frame-Options, X-Content-Type-Opti

Dividend and stock-split history for a ticker: every cash dividend (ex-date + amount) and split (date + ratio) over a

Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, Ethereum, Monad, Celo, Avalanche, or Sei. R

Decode a barcode or QR code from an image. Send a base64 PNG or JPEG (or a data: URL); returns the decoded text and th

Real-time USGS earthquake feed: magnitude, place, time, depth, coordinates. Live government data, no key. ?minMag=4.5&

Pull a subset of pages into a new PDF (split). Body: {"url":"https://…/file.pdf","pages":"1-3,5"}. Returns the new PDF

Fetch the verified ABI for a contract address from Sourcify, plus a ready-to-use list of human-readable function signa

Fetch and parse a DKIM public-key record at <selector>._domainkey.<domain> (RFC 6376). Returns the parsed key params (

Extended-hours quote for a US-listed ticker: latest traded price including pre-market and after-hours sessions, which

Extract the dominant colors of an image as a palette of hex values with pixel ratios. Send a public image URL or a bas

Search OpenStreetMap for places by keyword, optionally restricted to a bounding box or country. Returns ranked hits wi

Active National Weather Service alerts for a US state as clean JSON: event, severity, headline, affected areas, onset/

Fetch and parse a sitemap.xml (or sitemap index): returns up to 500 URLs with lastmod, or the child sitemaps of an ind

Current air quality index and pollutant concentrations for any location: US AQI, PM2.5, PM10, ozone, NO2, SO2, CO. Ope

Look up a URL in the Internet Archive's Wayback Machine: returns the archived snapshot closest to an optional timestam

Fetch contract event logs (eth_getLogs) on Ethereum, Base, Polygon, Arbitrum, or Optimism - bounded so it always answe

Resolve the same DNS record against 4 public resolvers (Google, Cloudflare, Quad9, OpenDNS) in parallel; surface diver

Historical foreign-exchange rate for a specific date using European Central Bank reference rates (via Frankfurter). Re

Extract EXIF metadata from an image (camera make/model, timestamps, exposure, orientation, GPS). Send a public image U

48-hour hourly weather forecast for any location: temperature, precipitation probability and amount, wind, cloud cover

Fetch a site's favicon/logo: reads the page's declared <link rel=icon…> tags (all variants with their sizes and types)

Look up the Autonomous System (ASN), prefix, country, registry, and allocation date for an IPv4 address - or for a hos

Live $1-peg deviation for the top USD stablecoins (USDT, USDC, USDS, DAI, USDe, PYUSD, USDD, TUSD, FDUSD by default, o

Build the EIP-3009 transferWithAuthorization typed data for a gasless USDC transfer on Base/Polygon/Arbitrum/Optimism/

Rotate pages by 90/180/270°. Body: {"url":"https://…/file.pdf","degrees":90,"pages":"1-3"?}. Omit "pages" to rotate al

Central government debt balance by category (JGBs total, of which General Bonds; FILP bonds; Borrowings; Financing Bil

Cross-venue mark-price spread scan for crypto perpetuals — where the same perp trades at different marks across venues

Details for one Farcaster channel by id (e.g. base) or FIP-2 parent URL: name, description, follower and member counts

Stablecoins ranked by circulating supply: peg currency and mechanism, price and deviation from peg, supply in peg unit

What Solana tokens are being pushed right now: DexScreener's top boosted tokens (paid promotion, ranked by boost amoun

Every listed perpetual ranked by current funding rate, the most positive and most negative N with open interest and 24

Full receipt for a transaction hash in one call: status, block, from/to, value, gas used vs limit, effective gas price

Fetch one Farcaster cast by hash or warpcast.com / farcaster.xyz URL. Returns the compact cast: author (fid, username,

DeFi protocols ranked by total value locked, filterable by category, chain or name, each with rank, chains, TVL, 1h, 1

Find Solana tokens and pairs by name, ticker or address across every DEX DexScreener indexes, filtered to Solana only,

Token and native transfer history for any EVM address across major chains: direction, counterparty, asset, exact decim