Fretwork Guitar Tools
Learn guitar chords, transpose songs, find scales and build practice plans.
Identifies chords from fret positions, shows chord shapes and fingerings, transposes songs to new keys with capo suggestions, finds song keys, locates scales on the fretboard, and creates personalized daily practice routines from a 10-stage curriculum.
Try asking Muse: "Show me what chord I'm playing if I hold frets x32010 on my guitar."
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Source: Found in the official MCP Registry (com.guitarfretwork/fretwork) · First listed October 30, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 1 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://mcp.guitarfretwork.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Fretwork Guitar Tools is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://mcp.guitarfretwork.com/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 83ms. Worked in n/a of checks over 30 days.
Screening · October 30, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 9
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 slastranspose_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 ofind_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 pentafind_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 answmake_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 whLink
https://mcp.guitarfretwork.com/mcpQuestions about Fretwork Guitar Tools in Muse
How do I connect Fretwork Guitar Tools to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Fretwork Guitar Tools to help me. It is a free service with an MCP server at https://mcp.guitarfretwork.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Fretwork Guitar Tools working right now?
At the last check (October 30, 2026, 05:16 UTC) the endpoint was working, answering in 83ms. It is checked every 15 minutes.
Is Fretwork Guitar Tools safe to connect to Muse?
It was screened on October 30, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Fretwork Guitar Tools do in Muse?
It exposes 9 tools, including identify_chord, get_chord_shapes, transpose_chords, find_capo. For example, you could ask Muse: "Show me what chord I'm playing if I hold frets x32010 on my guitar."
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This listing was added from public sources (Found in the official MCP Registry (com.guitarfretwork/fretwork)). If you build Fretwork Guitar Tools, claim it to correct the details and get your badge.
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