Guitar chords from frets, chord shapes, transposing, capo, scales, song keys and practice plans.
Connect Remote server
claude mcp add --transport http fretwork https://mcp.guitarfretwork.com/mcp
{
"mcpServers": {
"fretwork": {
"url": "https://mcp.guitarfretwork.com/mcp"
}
}
}
{
"servers": {
"fretwork": {
"type": "http",
"url": "https://mcp.guitarfretwork.com/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://mcp.guitarfretwork.com/mcp
Tools 9 found in our last check
identify_chordNames the chord a guitarist is holding from the fret on each string (standard tuning), lists its notes and returns a chord diagram. Use when someone asks "what chord is this?" and gives frets like x32010, 3-2-0-0-0-3 or "0 2 2 1 0 0" (low E string first; x = muted string).
get_chord_shapesReturns playable guitar shapes for a chord name (open position and movable barre shapes), with frets, fingering where known, the notes in the chord and a text chord diagram. Handles major, minor, 7, maj7, m7, sus2, sus4, add9, 6, m6, 9, dim, m7b5, dim7, aug, power chords and sla…
transpose_chordsMoves a song's chords to a new key. Accepts a chord list, a chord chart with lyrics (chord lines are transposed, lyric lines are kept), or inline [C] chords. Give either from_key and to_key, or a number of semitones. Also suggests capo positions that let the guitarist keep easy…
find_capoWorks out where to put a capo. Give the key you want to sound in (for example to match a singer or a recording) and, optionally, the open-chord key you want to play shapes in. Returns the capo fret, or the easy options if no shape key is given.
get_scaleGives the notes of a scale in any key and where they fall on the guitar fretboard (standard tuning), string by string, with root notes marked. Scales: major, natural minor, harmonic minor, melodic minor, the seven modes (dorian, phrygian, lydian, mixolydian, locrian), minor pent…
find_keyWorks out the most likely key of a song from its chord progression, gives each chord its Roman numeral, lists the other chords that belong to the key, and suggests which scale to solo with.
find_songsFinds songs a guitarist can play with the chords they already know, from Fretwork's free library of 87 public-domain folk, gospel, blues, campfire and Christmas songs. Each song has chords, key, time signature, level and a free play-along page. Can also list songs that need just…
guitar_level_checkA quick self-assessment that places a guitarist on Fretwork's 10-stage learning path (Stage 0 Getting Started to Stage 9 Artistry) from yes/no answers to up to nine questions about what they can already play, and says what to learn next. The questions build on each other, so ans…
make_practice_planBuilds a daily guitar practice routine and a 4-week focus plan sized to the player's level, the minutes they have each day and their goal (songs, strumming, fingerpicking, lead, barre chords, theory or general). Uses Fretwork's 10-stage curriculum, where stage 0 is for someone w…
Details
| Endpoint | https://mcp.guitarfretwork.com/mcp (Streamable HTTP) |
| First published | 29 Oct 2026 |
| Last updated | 29 Oct 2026 |
| Registry name | com.guitarfretwork/fretwork |
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