Open Ephemeris

Description

The most complete astronomical computation engine available as an MCP server. Open Ephemeris gives AI agents direct access to NASA JPL DE440 ephemeris data — the same kernel used for spacecraft navigation — for sub-arcsecond planetary precision and zero hallucination on dates, degrees, and positions. 92 typed tools across every major astrological tradition: Western natal charts, transits, progressions, synastry, and composites; Human Design bodygraphs with gates, channels, and type analysis; Vedic/Jyotish with D-charts, dashas, and Ashtakavarga; Chinese BaZi Four Pillars; astrocartography power lines and local space; Venus Star Points; Arabic Parts; eclipse lookup; electional timing windows; and interactive chart apps (natal wheel, bi-wheel, bodygraph, moon phase) that render inline in hosts that support MCP Apps. Also available as a one-click app in the ChatGPT app directory and as a custom connector for Claude. Free tier on sign-up, no card required.

Community Metrics

Categories

• mcp

Tags

• mcp
• smithery

Capabilities

• Remote MCP server

Information