astronomy mcp server for Claude.ai

io.github.cyanheads/astronomy-mcp-server

Offline observational astronomy: positions, rise/set, moon phases, eclipses, and seasons.

client:Claude.ai transport:streamable-http runtime:npm tools:7

Install astronomy mcp server in Claude.ai

Settings → Connectors → Add custom connector

https://astronomy.caseyjhand.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

astronomy_get_sky_position
astronomy_get_rise_set
astronomy_get_moon_phase
astronomy_find_events
astronomy_list_visible
astronomy_get_ephemeris
astronomy_get_satellite_passes

astronomy mcp server in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

astronomy mcp server MCP server