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mcp/harbor
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PlayByKey Music Theory MCP

v1.6.0

com.playbykey/theory-mcp

Chords, scales, progressions, transposition, and MIDI tools for music theory AI agents.

transport:stdio runtime:npm
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Target client

run in your project directory 

claude mcp add theory-mcp -- npx -y @playbykey/theory-mcp

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.