Google tells you what exists. Faceabot tells you what holds up.
Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed
MCP endpoint :https://mcp.thiri.ai/mcp · website · measurements and detailsLook up a guitar chord by name and get a text chord diagram. 12,708 standard-tuning names.
MCP endpoint :https://mcp.guitarpracticeroutine.com/mcp · website · measurements and detailsBuild chords and scales from note names locally. No network and no key.
Package npm :chord-mcp · website · measurements and detailsRead-only music guides, chord transposition, piano chord spelling and guitar-tab pitch mapping.
MCP endpoint :https://clefdrills.com/mcp · measurements and detailsChords, scales, transposition, capo and tempo maths, with links to free interactive music tools.
MCP endpoint :https://musokit.com/mcp · website · measurements and detailsChords, scales, progressions, transposition, and MIDI tools for music theory AI agents.
Package npm :@playbykey/theory-mcp · website · measurements and detailsScales, chords, progressions, key detection, and genre intelligence for your AI. No API keys needed.
Package npm :music-theory-mcp · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
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