JPL Horizons API
Get precise positions and ephemerides for planets, moons, comets and spacecraft at any time.
Notes. Public open-data service; free with no published price page.
Connect
This is an API, not an MCP server. Call it over HTTP. Setup steps are in its source .
Endpoints
The endpoints are in its docs .
Facts on this page come from the project's README, registry record or docs, read on Nov 2, 2026. Transport and auth are read from the text, so confirm them before you rely on them. Something wrong? See Get listed.
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