Keyshift Chord Transposer

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io.github.theluckystrike/chord-transposerv1.0.0

Change keys and capo shapes

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https://chord-transposer.zovo.one/mcp

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find_capo_options Read-only

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.

keystring

Sounding key, for example D or Am. Give key or chords, not both.

chordsarray

Chord list of 1 to 100 names; for example ["D", "G", "A", "Bm"]. Give this instead of key.

Tools (3)

find_capo_options

read-only

Argument	Type	Description
key	string	Sounding key, for example D or Am. Give key or chords, not both.
chords	array	Chord list of 1 to 100 names; for example ["D", "G", "A", "Bm"]. Give this instead of key.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "key": {
      "type": "string",
      "maxLength": 24,
      "description": "Sounding key, for example D or Am. Give key or chords, not both."
    },
    "chords": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 80
      },
      "maxItems": 100,
      "description": "Chord list of 1 to 100 names; for example [\"D\", \"G\", \"A\", \"Bm\"]. Give this instead of key."
    }
  }
}

show_chord_sheet

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.

read-only

Argument	Type	Description
sheet*	string	Chord sheet of 1 to 12,000 characters, with chords above lyrics or inline; for example C G\nLanterns glow, or [Am]Lantern [F]garden.
title	string	PDF title up to 80 Western Latin characters; for example Lantern Garden.
from_key	string	Origin key; for example C or Am. Required with to_key; otherwise the header or first and last chords give a key estimate.
spelling	string	Chord spelling; for example auto follows the target key, while sharps forces F# instead of Gb for consistent round trips.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "sheet"
  ],
  "properties": {
    "sheet": {
      "type": "string",
      "description": "Chord sheet of 1 to 12,000 characters, with chords above lyrics or inline; for example C    G\\nLanterns glow, or [Am]Lantern [F]garden."
    },
    "title": {
      "type": "string",
      "maxLength": 80,
      "description": "PDF title up to 80 Western Latin characters; for example Lantern Garden."
    },
    "from_key": {
      "type": "string",
      "maxLength": 24,
      "description": "Origin key; for example C or Am. Required with to_key; otherwise the header or first and last chords give a key estimate."
    },
    "spelling": {
      "enum": [
        "auto",
        "sharps",
        "flats"
      ],
      "type": "string",
      "description": "Chord spelling; for example auto follows the target key, while sharps forces F# instead of Gb for consistent round trips."
    }
  }
}

transpose_chords

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.

read-only

Argument	Type	Description
sheet*	string	Chord sheet of 1 to 12,000 characters, with chords above lyrics or inline; for example C G\nLanterns glow, or [Am]Lantern [F]garden.
title	string	PDF title up to 80 Western Latin characters; for example Lantern Garden.
to_key	string	Target key paired with from_key; for example from_key C and to_key F. Use this instead of semitones or capo_fret.
from_key	string	Origin key; for example C or Am. Required with to_key; otherwise the header or first and last chords give a key estimate.
spelling	string	Chord spelling; for example auto follows the target key, while sharps forces F# instead of Gb for consistent round trips.
capo_fret	integer	Capo fret from 0 to 9; for example 2 returns shapes two semitones below the sounding key. Use this instead of semitones or to_key.