PlayByKey Music Theory MCP Server: Install & Setup

Install PlayByKey Music Theory in Claude Code

Claude Code

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

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "playbykey-music-theory": {
      "command": "npx",
      "args": [
        "-y",
        "@playbykey/theory-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the PlayByKey Music Theory MCP server do?

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

Is the PlayByKey Music Theory MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does PlayByKey Music Theory run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add PlayByKey Music Theory to Claude Code?

Run: claude mcp add playbykey-music-theory -- npx -y @playbykey/theory-mcp

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