"Free APIs and services without commercial fees" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
MCP for SpaceTime Server APIs
Aircraft intelligence for AI agents: valuations with uncertainty bands, FAA registry lookups, cost of ownership, comparable aircraft, fleet search, airworthiness directives and STCs, market metrics and forecasts, verified value reports, pre-buy diligence checklists, logbook search and a watchlist. 38 tools; free tier with OAuth or a Windsock API key.
Birth charts, transits, moon phases and more from precise astronomical calculations. Natal Compass.
Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.
Aircraft noise over the Netherlands: what flies over you and how loud, and report a noisy flight
Read-only access to live ADSBiq aircraft and network state, with community contribution metadata.
Aviation accident narratives from 128 official authorities, plus FAA wildlife, laser and drone data
NASA astronomy photo of the day + imagery. $0.01/query. Register in-session — free testnet funds.
NASA mission & space news: launches, science. $0.01/query. Register in-session — free testnet funds.
Astronomy: sun, moon, planet, eclipse, twilight and star position calculations.
Rocket launch schedule: SpaceX, Falcon, Electron. $0.01/query, free testnet funds.
Space weather: Kp index, solar flare flux, alerts. $0.01/query, free testnet funds.
Drone-sector market intelligence for AI agents: free briefings and profiles, licenced tracker data.
Live space data for AI agents - rocket launches, ISS passes, launch news. Free, no auth.
Free no-key search over CASA, FAA, EASA & ICAO aviation regulations. By Deepsky (deepskyai.com).
Satellite SAR analysis: ship, oil slick, building change, and time-series change detection
Aviation identity resolution and an AI use-case atlas, with provenance and temporal validity
Launches MCP — wraps Launch Library 2 API (ll.thespacedevs.com, free, no auth)
Spacenews MCP — wraps the Spaceflight News API v4 (free, no auth)
TLE MCP — satellite tracking via Two-Line Element sets (tle.ivanstanojevic.me, free, no auth)
