the402 x402 endpoint directory

Freight carbon: CO2e for road/rail/sea/air shipments by weight × distance, single-leg or multi-leg intermodal. Ports/a

YouTube video transcript extraction with per-segment timing. Returns the caption track as timed segments (start, durat

Latest surface observation from the nearest National Weather Service station to a US coordinate, with the station iden

Search or list active Polymarket prediction markets, ranked by 24h volume

Search or list open Kalshi prediction markets (regulated US event contracts)

Fetch a public HTTP(S) page with private-network blocking and extract its title, description, Open Graph image, status

Official National Weather Service forecast for any US coordinate - six 12-hour day/night periods by default, or hourly

Active National Weather Service watches, warnings and advisories for a US coordinate or a two-letter state or marine a

Return the US Census Bureau geographies containing a latitude/longitude — state, county, census tract, block group, ce

Convert a one-line US street address into coordinates using the US Census Bureau Geocoder. Returns the standardised ma

Find Legal Entity Identifiers by company name in the global GLEIF register, optionally narrowed to one country. Return

Fetch Open Graph / meta metadata (title, description, image, favicon, canonical URL) for a public URL - served from a

Raw and decoded METAR (and optional TAF) for any airport ICAO code. Source: NOAA Aviation Weather Center. JSON.

Latest observed conditions near a US coordinate: temperature, wind, humidity, visibility, pressure from the nearest we

Hour-by-hour forecast for any US coordinate: temperature, precipitation chance, wind, conditions for the next 48 hours

Active watches/warnings/advisories for a US state or coordinate: event type, severity, headline, timing. Source: Natio

7-day forecast for any US coordinate: periods with temperature, wind, precipitation chance, narrative. Source: Nationa

Can this domain receive mail, and is it configured seriously? MX, SPF and DMARC via DNS-over-HTTPS with a deliverabili

EPA MPG figures and estimated annual fuel cost for a year/make/model. Source: fueleconomy.gov. JSON.

Latest surface observation from the nearest National Weather Service station to a US coordinate, with the station iden

Convert a one-line US street address into coordinates using the US Census Bureau Geocoder. Returns the standardised ma

Spend-based carbon (Scope 3): convert a transaction amount + industry code (MCC/NAICS/BEA/ISIC/SIC/NACE) into verified

Look up an on-chain transaction by hash. Given a chain and a transaction hash returns sender, recipient, value (wei +

Research and market-monitoring agents buy this endpoint to answer a focused question with a compact live market snapsh

Active National Weather Service watches, warnings and advisories for a US coordinate or a two-letter state or marine a

Official National Weather Service forecast for any US coordinate - six 12-hour day/night periods by default, or hourly

Find Legal Entity Identifiers by company name in the global GLEIF register, optionally narrowed to one country. Return

Return the US Census Bureau geographies containing a latitude/longitude — state, county, census tract, block group, ce

Run a low-cost wallet balance lookup for native ETH and official USDC on Base, Ethereum, or Arbitrum, with an estimate

Safelisted read-only JSON-RPC proxy across major EVM chains (base, ethereum, polygon, arbitrum, optimism) — eth_call,

Look up a DeFi protocol's current total value locked (TVL), by chain, plus market cap

Prüft eine europäische Umsatzsteuer-Identifikationsnummer auf Länderpräfix, Länge, Zeichenvorrat und Prüfziffer, sowei

Erkennt CMS, Shop, Framework, Server, CDN, Analytics, Consent-Tool, Zahlungsanbieter und Marketing-Stack aus Headern,

Vollständiges Domainprofil: A/AAAA/MX/NS/TXT/CNAME/SOA, Mail-Setup (SPF, DMARC, DKIM-Hinweis, MTA-STS), TLS-Zertifikat

Check a specific dataset, paper, repository, or model URL against the indexed open-science corpus and receive a conser

Search recent UK public-sector procurement notices from Find a Tender -- buyer, value, CPV category, and status. Publi

Returns a license-compliance view over the same locally harvested metadata-only index of public scientific assets as t

Emission-factor lookup: fetch the underlying factor (value, unit, methodology, source, licence) by id, activity_type,

Flight carbon: great-circle CO2e for a route by IATA/UN-LOCODE or lat/long, by cabin class and passengers, with option

Batch activity-based carbon: many activity calculations in one call (1–100 items). Priced per item.

Activity-based carbon: convert a physical quantity (fuel, electricity, materials; 1,000+ activity types) into verified

13F holdings for any SEC-filing manager (hedge funds, asset managers) by CIK or manager ticker: latest 13F top 20 posi

OpenAI-compatible chat completions, nano tier: gpt-5.6-luna, gpt-5-nano, gemini flash-lite, small llama/ministral/qwen

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

Current temperature and wind for a city from Open-Meteo (live forecast data)

Get liquidation risk levels for DeFi lending protocols

AI chat completions - 80+ models (GPT-4o, Claude, Gemini, DeepSeek), pay per token with USDC

Verify and lint a third-party x402 endpoint without paying it. Probe the live HTTP 402 challenge, validate x402 v2 and

Decode a full 17-character VIN into normalized NHTSA vPIC make, model, year, body, engine, transmission, plant, fuel,

Get a global weather forecast for a city/locality name or exact coordinates. Returns normalized day/night or hourly pe