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mcp/harbor
Verified official

clef MCP

v1.0.0

io.github.melmayssonowen/clef

Read-only music guides, chord transposition, piano chord spelling and guitar-tab pitch mapping.

transport:streamable-http tools:4

Target client

run in your project directory 

claude mcp add --transport http clef https://clefdrills.com/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

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

find_music_guides Read-only

find music guides

transpose_chords

transpose chords

spell_piano_chord

spell piano chord

tab_to_piano_notes

tab to piano notes

All 4 tools, one page each

30 resources you attach as context

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.