Free APIGeo & WeatherOAuthOfficial

OpenSky Network API

Live global flight state vectors (position, altitude, velocity) from a crowdsourced ADS-B sensor network, free for research and hobby use.

OpenSky Network is a non-profit, community-fed air-traffic data platform. Its REST API exposes near-real-time state vectors for all tracked aircraft worldwide plus historical flights, arrivals/departures by airport, and trajectory tracks. Authentication is OAuth2 client-credentials (Basic auth was removed); anonymous access still works for /states/all on the lowest quota. Ideal for flight-tracking skills, airspace dashboards, and automations that watch a bounding box or a specific aircraft.

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Free tier

Free for non-commercial/research use. Anonymous: 400 credits/day. Registered (OAuth2): 4,000 credits/day; active data feeders (>=30% receiver uptime) get 8,000/day. Commercial use needs a separate agreement.

Rate limits

Credit-based, resets daily; quotas apply per endpoint group (/states/*, /flights/*, /tracks/*). A /states/all call costs 1 credit for <=25 sq deg, 2 for 25-100, 3 for 100-400, 4 for global/>400. Anonymous returns only the latest snapshot (ignores time params).

Auth

OAuth

Base URL

https://opensky-network.org/api

What you'd build with it

Build a 'what's flying over me' Claude skill from a lat/lon bounding box
Automation that alerts when a specific tail/icao24 takes off or lands
Airspace-density heatmaps and research datasets
Detect arrivals/departures at a given airport for ops dashboards

Key endpoints

GET/states/allAll current aircraft state vectors; filter by bounding box (lamin,lomin,lamax,lomax) or icao24.
GET/flights/allAll flights seen within a begin/end Unix-time interval (max 2h window).
GET/flights/arrivalFlights that landed at an airport (ICAO code) in a time interval.
GET/flights/departureFlights that departed an airport (ICAO code) in a time interval.
GET/tracks/allTrajectory waypoints for a single aircraft by icao24 (authenticated).

Members

Members get the runnable recipe

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