io.github.asume21/music-theory-mcp
music-theory
Is the io.github.asume21/music-theory-mcp MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Scales, chords, progressions, key detection, and genre intelligence for your AI. No API keys needed.
alive probed 2026-11-15 · unchanged since 2026-10-30
- Run it
- npx -y music-theory-mcp@1.0.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- music-theory 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- 0.3 % of a 1M context window
- Count
- 3.2k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 3.3k. The o200k_base estimate is 1.8k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/asume21/music-theory-mcp
- Registry
- active, updated 2026-04-01 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.75×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| get_genre_profile | 322 | 184 | 10 % |
| resolve_progression | 308 | 176 | 10 % |
| suggest_genre | 283 | 162 | 9 % |
| get_scale | 280 | 160 | 9 % |
| get_chord | 268 | 153 | 8 % |
Compare this server with others.
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Servers that mention theory.
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Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.