Astrology app for ChatGPT and Claude: real charts from NASA JPL DE440, not AI guesses.
Connect Remote server
claude mcp add --transport http open-ephemeris https://mcp.openephemeris.com/mcp
{
"mcpServers": {
"open-ephemeris": {
"url": "https://mcp.openephemeris.com/mcp"
}
}
}
{
"servers": {
"open-ephemeris": {
"type": "http",
"url": "https://mcp.openephemeris.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://mcp.openephemeris.com/mcp
Tools
This server asks for a key before it lists its tools. Connect it with your own key to see them.
Details
| Endpoint | https://mcp.openephemeris.com/mcp (Streamable HTTP) |
| First published | 8 Nov 2026 |
| Last updated | 8 Nov 2026 |
| Registry name | com.openephemeris/open-ephemeris |
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