Spirit-River/openephemeris-MCP
MCP server and API examples for OpenEphemeris — NASA JPL ephemeris API for AI agents
Platform-specific configuration:
{
"mcpServers": {
"openephemeris-MCP": {
"command": "npx",
"args": [
"-y",
"openephemeris-MCP"
]
}
}
}Add the config above to .claude/settings.json under the mcpServers key.
[](https://www.npmjs.com/package/@openephemeris/mcp-server) [](https://status.openephemeris.com) [](./LICENSE)
Official MCP server and integration examples for Open Ephemeris — a NASA JPL DE440/DE441-backed astronomical computation engine for developers and AI agents.
---
Give any AI agent access to 48 typed astrological tools with zero hallucination. Powered by Swiss Ephemeris.
Add to your config file:
~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.json{
"mcpServers": {
"openephemeris": {
"command": "npx",
"args": ["-y", "@openephemeris/mcp-server"],
"env": {
"OPENEPHEMERIS_API_KEY": "YOUR_API_KEY_HERE"
}
}
}
}Get your free API key at openephemeris.com/dashboard. Free Explorer tier — no credit card required.
See SETUP.md for platform-specific walkthroughs.
"Calculate a natal chart for 1990-04-15 at 2:30 PM in Chicago."
"Find all Saturn transits to my natal Sun in the next 6 months."
"Get the current moon phase and void-of-course status."
"Find the next solar eclipse visible from Tokyo."
"Find the best electional window to sign a contract in March."
"Generate a Human Design chart for my birth data."
"What is my Vedic (sidereal) chart?"
"Calculate my Chinese BaZi (Four Pillars) chart."
"Show me my Astrocartography power lines — where is my Venus line?"
"Calculate a synastry chart between two people."
"Find the next Venus Star PLoading reviews...