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Keyshift Chord Transposer

by theluckystrike · remote · no sign-in to list tools · v1.0.0 · published by GitHub user theluckystrike

Change keys and capo shapes

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 only read.

Scanned Oct 22, 2026

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

claude mcp add --transport http chord-transposer https://chord-transposer.zovo.one/mcp

Tools

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

3 tools

Changes things 1Claude Code: ask
  • transpose_chordsUse this when you want to transpose chords or change the key of a song.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
    Use this when you want to transpose chords or change the key of a song. Accepts a sheet up to 12,000 characters, chords above lyrics or ChordPro brackets; choose semitones -11 to +11, from_key with to_key, or capo_fret 0 to 9. Returns key change, chord mapping, widget sheet and a Latin-only Courier PDF. Chord names only; does not process audio, tablature or staff notation. Key estimates can be wrong for songs that change key.

    Annotations the server declares

    • title: Transpose chords
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
Only reads 2Claude Code: allow
  • find_capo_optionsUse this when you want a capo chart or capo calculator for a sounding key or chord list.No findings

    Why it is in this group

    • The name "find_capo_options" says "find": a word for reading.
    Description, as the server wrote it
    Use this when you want a capo chart or capo calculator for a sounding key or chord list. Returns frets 0 to 9, the shapes to play and easy open chord counts. Supply one key or 1 to 100 chord names, each up to 80 characters. Does not process audio, tablature or staff notation; ease counts chord names, not fingering variations.

    Annotations the server declares

    • title: Find capo options
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • show_chord_sheetUse this when you want a live chord sheet with -1 and +1 semitone controls.No findings

    Why it is in this group

    • The name "show_chord_sheet" says "show": a word for reading.
    Description, as the server wrote it
    Use this when you want a live chord sheet with -1 and +1 semitone controls. Accepts 1 to 12,000 characters in chord-line or ChordPro format; controls call transpose_chords. Shows the original key and chord counts plus a Latin-only Courier PDF. Chord names only; does not process audio, tablature or staff notation. Key estimates can be wrong for songs that change key.

    Annotations the server declares

    • title: Show chord sheet
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true

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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http chord-transposer https://chord-transposer.zovo.one/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-transposer__find_capo_options",
      "mcp__chord-transposer__show_chord_sheet"
    ],
    "ask": [
      "mcp__chord-transposer__transpose_chords"
    ],
    "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-transposer. Review it before you use it.