What is the range of MIDI notes covered?

The engine covers all 128 MIDI notes, from C-1 to G9.

Can I use a custom reference pitch?

Yes, you can provide any positive frequency in Hz as the `referencePitch` for all tools.

How are deviations calculated?

The `calculate_interval_deviations` tool compares the selected tuning system against pure Just Intonation ratios and returns the result in cents.

Equal Temperament Calculator MCP Connector for Claude

A+

Calculate MIDI frequencies, interval deviations, and tuning system comparisons.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

A mathematical engine for musical acoustics. Use generate_midi_frequency_log to get a full list of MIDI frequencies, calculate_interval_deviations to find cents deviation from Just Intonation, and compare_tuning_supports to analyze differences between Pythagorean, Meantone, and Equal systems.

midifrequencytuningacousticsmusic-theory

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_rPqBeH9fPtGXgG1TBo8yb5w1t30YyPDJmYmqluU8/mcp

② Claude Code (terminal)

claude mcp add --transport http equal-temperament-calculator https://edge.vinkius.com/vk_preview_rPqBeH9fPtGXgG1TBo8yb5w1t30YyPDJmYmqluU8/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "equal-temperament-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_rPqBeH9fPtGXgG1TBo8yb5w1t30YyPDJmYmqluU8/mcp"
    }
  }
}

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