OfficialLocal + RemoteFree server, account needed

Open Ephemeris MCP server

openephemeris/openephemeris-MCP

Astrology from the NASA JPL DE440 ephemeris: natal, synastry, progressions, transit search, Human Design, Vedic, BaZi and astrocartography.

5 GitHub stars2 forks
Source code Website

Install Open Ephemeris in Claude Code

Claude Code
claude mcp add --transport http open-ephemeris https://mcp.openephemeris.com/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "open-ephemeris": {
      "url": "https://mcp.openephemeris.com/mcp"
    }
  }
}

Frequently asked questions

What does the Open Ephemeris MCP server do?

Astrology from the NASA JPL DE440 ephemeris: natal, synastry, progressions, transit search, Human Design, Vedic, BaZi and astrocartography.

Is the Open Ephemeris MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Open Ephemeris run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Open Ephemeris to Claude Code?

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

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