the402 x402 endpoint directory

DNS resolver API: query any record type (A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV) for any hostname and get the full

Country reference data keyed by name or ISO code — currency, capital, languages, calling code, region, area, and neigh

Look up a country by name or its 2- or 3-letter ISO code and get capital, currencies, official languages, calling code

Country facts API: capital, currencies, languages, population, region, calling code, and flag for any country by name

Country information API: capital, ISO codes, currencies, languages, calling code, region, area, land borders, and flag

Look up any airport by its IATA or ICAO code and get back precise coordinates, elevation, and IANA timezone alongside

Instant lookup for any 3-letter or 4-letter flight code, returning the matching airport's full name, city, country, co

Airport code API: resolve any IATA (IAH) or ICAO (KIAH) code to airport name, city, country, coordinates, elevation, a

Airport lookup API: resolve any 3-letter IATA or 4-letter ICAO code to the airport's name, city, state, country, coord

A durable inbound URL for agents that can't host a server. POST {ttl?} mints a bucket and a public capture URL; any ex

FINRA BrokerCheck lookup — every US registered broker / investment advisor (~620k current + former). Search by free-te

Current air quality for any coordinate worldwide. Pass lat + lon. Returns the US AQI (+ category Good/Moderate/Unhealt

https://x402.openwebninja.com/realtime-web-search/search-full

Live fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents

Daily reference exchange rates from the European Central Bank (via Frankfurter). 30+ major currencies. Pass base = 3-l

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

Fetch and validate a domain's SPF record (RFC 7208). Parses mechanisms (ip4/ip6/include/a/mx/all), counts DNS lookups

Resolve an ENS name (e.g. vitalik.eth) to its Ethereum address — so an agent can turn a human-readable recipient into

Resolve a free-form address or place name to coordinates: lat/lon, display name, bounding box, place type. OpenStreetM

Search 300,000+ US government datasets on catalog.data.gov (CKAN): titles, publishing org, formats, and direct resourc

Inspect the TLS certificate of any public host: subject, issuer, validity window, days remaining, SANs, and SHA-256 fi

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

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

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

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

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

7-day daily weather forecast for any location: high/low temp, precipitation sum and probability, max wind, UV index, s

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

Check the confirmation status of a transaction by hash on Base/Polygon/Arbitrum/Optimism/Ethereum/Robinhood Chain: suc

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

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 and validate a domain's DMARC policy at _dmarc.<domain> (RFC 7489). Surfaces the enforcement policy (none/quaran

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

Read the USDC balance of any address on Base, Polygon, Arbitrum, Optimism, or Ethereum. Read-only on-chain call. ?addr

Resolve a lat/lon to a structured postal address: road, house number, city, state, postcode, country (with ISO code).

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

Fetch a Wikidata entity (Q42, P31, etc.) — structured knowledge-graph record with labels + descriptions + aliases in s

World Bank Open Data — fetch a time series of a specific indicator for a country (or 'all'). 1000+ indicators across 2

Global natural events tracker via NASA EONET v3 (Earth Observatory Natural Event Tracker). Returns active and historic

Current marine/sea-state conditions for an ocean or coastal coordinate. Pass lat + lon. Returns significant wave heigh

Search the federal banking compliance rules database. 56 rules across Reg DD, Reg Z, UDAAP, ECOA, BSA/AML, and more.

Follow a public redirect chain with per-hop HTTP status (SSRF-safe) for security agents

Creative name generator. Categories: fantasy, startup, pet, band.

Curated named color palette with hex codes, mood, and CSS variables.

Decode a 3-char WMI via NHTSA vPIC for $0.003 USDC into manufacturer and vehicle type.

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

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

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

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