Ephemeris Mcp

scottchronicity/ephemeris-mcp

Wraps the Swiss Ephemeris library to give AI agents precision planetary positions in tropical zodiac coordinates. Exposes a single tool, get_planetary_positions, that takes an ISO timestamp and lat/long coordinates and returns geocentric positions for the Sun, Moon, planets, plus chart angles like Ascendant and Midheaven. Each body comes back with zodiac sign, degrees, retrograde status, speed, and declination. Reach for this when you're building astrological chart tools, need accurate historical or future planetary data, or want to answer astronomical position queries without maintaining ephemeris files yourself. Ships as a PyPI package that runs via uvx or as a Docker container.

GitHub stars

1

tool

1

transport

STDIO

last updated

Mar 27, 2026

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"mcpServers": {
  "ephemeris": {
    "command": "uvx",
    "args": ["ephemeris-mcp"]
  }
}

# Install with uvx (recommended - fast & isolated, no local install needed)
uvx ephemeris-mcp

# Or install globally with pip
pip install ephemeris-mcp
python -m ephemeris_mcp