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THIRI Chord Intelligence

by thiri.ai · remote · local (npm) · no sign-in to list tools · v0.5.2 · published by ai.thiri

Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http chord-intelligence https://mcp.thiri.ai/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warngenerate_voicing

    The server marks "generate_voicing" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_voicing" says "generate": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

4 tools

Changes things 2Claude Code: ask
  • generate_voicingInstrument-ready voicing in a style; pass previousNotes for a voice-leading score.1 finding

    Why it is in this group

    • The name "generate_voicing" says "generate": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "generate_voicing" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "generate_voicing" says "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Instrument-ready voicing in a style; pass previousNotes for a voice-leading score.

    Annotations the server declares

    • title: Generate Voicing
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • reharmonizeReharmonize a progression.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Reharmonize a progression. Techniques: tritone_sub, ii_v_insertion, modal_interchange, diminished_passing, secondary_dominant, chain_of_dominants, coltrane_changes, backdoor (or auto).

    Annotations the server declares

    • title: Reharmonize Progression
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • analyze_chordParse a chord into root, quality, intervals, and (with a key) roman numeral + function.No findings

    Why it is in this group

    • The name "analyze_chord" says "analyze": a word for reading.
    Description, as the server wrote it
    Parse a chord into root, quality, intervals, and (with a key) roman numeral + function. Numerals use the jazz convention by default (Cmaj7 in Am = ♭IIIΔ7); both jazz and classical numerals are always returned in `numerals`, and other valid readings in `alternatives`. Pass `scale` to read a minor key as harmonic or melodic minor.

    Annotations the server declares

    • title: Analyze Chord
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • resolve_chordResolve a chord to spelled notes, frequencies, MIDI, and recommended scales.No findings

    Why it is in this group

    • The name "resolve_chord" says "resolve": a word for reading.
    Description, as the server wrote it
    Resolve a chord to spelled notes, frequencies, MIDI, and recommended scales.

    Annotations the server declares

    • title: Resolve Chord
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.5.2. Values in angle brackets are yours to fill in.

claude mcp add --transport http chord-intelligence https://mcp.thiri.ai/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__chord-intelligence__analyze_chord",
      "mcp__chord-intelligence__resolve_chord"
    ],
    "ask": [
      "mcp__chord-intelligence__generate_voicing",
      "mcp__chord-intelligence__reharmonize"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as chord-intelligence. Review it before you use it.