{"id":"4c290833-8d24-4a0a-b5f1-09eed6ba2a7a","shortId":"xecpwV","kind":"mpp","title":"Pay-per-request METAR weather observations for any airport via FlightAware AeroAPI, settled with USDC micropayments.","tagline":"Pay-per-request METAR weather observations for any airport via FlightAware AeroAPI, settled with USDC micropayments.","description":"This endpoint returns current METAR weather observations for a specific airport, identified by its ICAO or IATA code in the URL path parameter `:id`. It is part of the StableTravel API suite, which proxies FlightAware AeroAPI data through a pay-per-request MPP/x402 micropayment layer. Each call costs $0.004 (0.4 cents) in USDC, settled on Tempo L2 (chain ID 4217). No API keys or subscriptions are required — payment serves as authentication.\n\nThe response includes decoded METAR data: temperature, dewpoint, humidity percentage, barometric pressure, wind speed/direction, visibility, cloud layers, flight rules (VFR/IFR/etc.), density altitude, and the raw METAR string. Optional query parameters let you choose temperature units (fahrenheit or celsius) and request nearby weather station data via `return_nearby_weather=true`. A `timestamp` parameter allows querying historical observations.\n\nThis endpoint is one of over 60 travel-related endpoints on StableTravel, which covers flights (Amadeus GDS), hotels, activities, transfers, Google Flights price comparison, and the full FlightAware AeroAPI surface including real-time flight tracking, airport delays, flight history, and disruption counts. The OpenAPI 3.1 spec is published at `/openapi.json` with full response schemas for this endpoint.","tags":["amadeus","flightaware","flights","hotels","activities","transfers","travel"],"capabilities":["metar-weather-observations","airport-weather","temperature-units","flight-rules","wind-data","visibility","cloud-layers","barometric-pressure","raw-metar","nearby-weather-stations","pay-per-request","micropayment-auth"],"categories":["weather","aviation","geo"],"synonyms":["METAR","airport weather","aviation weather","weather observations","airport conditions","flight rules","wind speed airport","FlightAware weather","airport METAR API","aviation meteorology"],"warnings":[],"endpointUrl":"https://stabletravel.dev/api/flightaware/airports/:id/weather/observations","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"stabletravel.dev","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.920","qualityRationale":"Full OpenAPI 3.1 schema with detailed response properties, clear pricing ($0.004/call), live 402 MPP challenge captured, comprehensive documentation including parameter descriptions and workflow guidance. Only minor gap: no example response in the spec itself, so the example above is inferred from the 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