PlayByKey Music Theory for Claude Code

com.playbykey/theory-mcp

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

client:Claude Code transport:stdio runtime:npm

Install PlayByKey Music Theory in Claude Code

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