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Q: How do I install openephemeris in Claude Code?

Run: claude mcp add --transport http openephemeris https://openephemeris--open-ephemeris.run.tools

The most complete astronomical computation engine available as an MCP server. Open Ephemeris gives AI agents direct access to JPL DE440/DE441 ephemeris data — the same dataset used by NASA — for sub-arcsecond planetary precision and zero hallucination on dates, degrees, and positions. 50+ 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 rendered chart wheels as native MCP images. All tools return structured JSON with format="llm" support for 50% smaller, token-efficient output. Free Explorer tier — no credit card required.

listed on

Smithery

Not monetized yet

Turn openephemeris’s tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.

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Install openephemeris

For anyone using openephemeris — no Lulu account needed

claude mcp add --transport http openephemeris https://openephemeris--open-ephemeris.run.tools

weather-mcp — free forecasts, rendered as native cards

Real-time weather for any city, built on the lulu-ads widget gallery. First-party, free forever.

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FAQ

How do I install openephemeris in Claude Code?

Run: claude mcp add --transport http openephemeris https://openephemeris--open-ephemeris.run.tools

Can I add openephemeris as a connector in ChatGPT or Claude.ai?

Yes — it’s a remote MCP server, so no local install is needed.
ChatGPT: Settings → Connectors → Advanced → Developer mode → Add connector, then paste https://openephemeris--open-ephemeris.run.tools.
Claude.ai: Settings → Connectors → Add custom connector, then paste the same URL.

Which registries list openephemeris?

smithery

What is openephemeris's trust score?

Unrated out of 100, computed from cross-registry traction signals (installs, stars, registry presence) — never influenced by sponsorship.

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