astronomy mcp server for Claude Code

io.github.cyanheads/astronomy-mcp-server

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

client:Claude Code transport:streamable-http runtime:npm tools:7

Install astronomy mcp server in Claude Code

run in your project directory

claude mcp add --transport http astronomy-mcp-server https://astronomy.caseyjhand.com/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs