Overwatch API

Live positions, decoded telemetry and reception network for the ~23 cubesats currently broadcasting open telemetry — batteries, temperatures, currents decoded locally from their actual radio frames. 100% open data, self-hosted in Europe.

The whole fleet — latest positions + when each satellite was last heard:

GET /api/v1/satellites

One satellite (CUBEBEL-2, the richest live beacon — NORAD 57175):

GET /api/v1/track/57175?minutes=100            → recent ground track (+ eclipse flag)
GET /api/v1/receptions/57175?hours=24          → volunteer stations that heard it
GET /api/v1/telemetry/57175/fields             → decoded fields available
GET /api/v1/telemetry/57175?field=battery_v&hours=24  → battery voltage series

Canonical fields work fleet-wide: battery_v, battery_i, battery_pct —
raw beacon fields (per-satellite naming) stay queryable next to them.

Version 0.2.0 · Free during development — no key required yet (POST /api/v1/keys {"email": …} to get one for the beta; /api/v1/keys/{key}/usage shows your own consumption). Rate limits apply; positions are SGP4-propagated from cached elements, telemetry is decoded locally — no request here ever hits an upstream API. Attribution: telemetry & receptions © SatNOGS DB contributors (CC-BY-SA) · decoders: satnogs-decoders (LGPL) · elements: CelesTrak.