io.github.mrfentmen/usno-mcp
Sun rise and set, moon phases, twilight times and the seasons from the US Naval Observatory.
Target client
run in your project directory
claude mcp add usno-mcp -- npx -y @mrfentmen/usno-mcpsetup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok LangChain
Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs
This listing does not declare its tools. Connect the server and your client will discover them on the handshake.