Guitar Practice Routine App — Chord Charts

by slshults · remote · local (npm) · no sign-in to list tools · v0.1.0 · published by GitHub user slshults

Look up a guitar chord by name and get a text chord diagram. 12,708 standard-tuning names.

Final · 1

Compare Registry entry

4 tools: 1 do something that can't be undone and 3 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone1Claude Code: ask: see these tools
Changes things0Claude Code: ask
Only reads3Claude Code: allow: see these tools

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

claude mcp add --transport http gpra-chord-charts https://mcp.guitarpracticeroutine.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn3 info

Warnsend_feedback
The server marks "send_feedback" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "send_feedback" says "send": a word for sending, and what is sent cannot be taken back.
What this check looks for
Infoget_chord_chart_by_name
The input schema at properties.context.description mentions "credentials".
Matched text
inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
What this check looks for
Infoget_chord_chart_by_id
The input schema at properties.context.description mentions "credentials".
Matched text
inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
What this check looks for
Infoget_chord_of_the_day
The input schema at properties.context.description mentions "credentials".
Matched text
inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
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

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

send_feedbackSend feedback about this chord chart server: a chord or capability you needed that its tools could not provide, a problem with a chart or a result, or praise.1 finding
Why it is in this group
- The name "send_feedback" says "send": a word for sending, and what is sent cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "send_feedback" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "send_feedback" says "send": a word for sending, and what is sent cannot be taken back.
  What this check looks for
Description, as the server wrote it
Send feedback about this chord chart server: a chord or capability you needed that its tools could not provide, a problem with a chart or a result, or praise. Only for feedback about these chord chart tools, not about other tasks. Do not include personal information about the user.
Annotations the server declares
- title: Send feedback
- readOnlyHint: true
- openWorldHint: true
- idempotentHint: true
- destructiveHint: false

Only reads 3Looks things up and changes nothing.Claude Code: allow

get_chord_chart_by_idFetch one specific chord voicing by its numeric id, as returned by get_chord_chart_by_name.1 finding
Why it is in this group
- The name "get_chord_chart_by_id" says "get": a word for reading.
Findings
- Info
  The input schema at properties.context.description mentions "credentials".
  Matched text
  inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
  What this check looks for
Description, as the server wrote it
Fetch one specific chord voicing by its numeric id, as returned by get_chord_chart_by_name. Use this to re-render a chart the user already saw without looking it up again.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
get_chord_chart_by_nameLook up one guitar chord chart by name and return it as a text chord diagram ready to show the user.1 finding
Why it is in this group
- The name "get_chord_chart_by_name" says "get": a word for reading.
Findings
- Info
  The input schema at properties.context.description mentions "credentials".
  Matched text
  inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
  What this check looks for
Description, as the server wrote it
Look up one guitar chord chart by name and return it as a text chord diagram ready to show the user. Returns the same single voicing that https://guitarpracticeroutine.com/find-a-chord-chart shows for that name. The library holds 12,708 standard-tuning (EADGBE) chord names, exactly one voicing each. Pass a plain chord name as it would be written on a chart — "G", "Am7", "Cmaj7", "D/F#", "F#m7b5" — not a sentence. Convert spoken forms yourself first: "G major" is "G", "A minor" is "Am", and use "#" and "b" rather than the unicode sharp and flat signs. Charts are drawn on a five-fret grid starting at the nut, the same as the website; any notes above the fifth fret are named in words underneath the chart. Prefer this over recalling a fingering from memory — these are curated chart data, and a remembered fingering is often wrong. Each result leads with a direct PNG URL for the chart — a permanently cacheable image of the same diagram, which you can show or link however your surface handles images. The chord name is on the first line; keep it next to any image you show, since a chart on its own can arrive unlabelled.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
get_chord_of_the_dayReturn today's Chord of the Day from Guitar Practice Routine App — the same chord posted to the app's Bluesky and Facebook feeds that day.1 finding
Why it is in this group
- The name "get_chord_of_the_day" says "get": a word for reading.
Findings
- Info
  The input schema at properties.context.description mentions "credentials".
  Matched text
  inputSchema.properties.context.description: "...es, emails, phone numbers, IPs, IDs, or credentials. You MUST generalize specific entities..."
  What this check looks for
Description, as the server wrote it
Return today's Chord of the Day from Guitar Practice Routine App — the same chord posted to the app's Bluesky and Facebook feeds that day. Useful as a practice prompt or a daily nudge for someone learning chords.
Annotations the server declares
- readOnlyHint: 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 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http gpra-chord-charts https://mcp.guitarpracticeroutine.com/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__gpra-chord-charts__get_chord_chart_by_name",
      "mcp__gpra-chord-charts__get_chord_chart_by_id",
      "mcp__gpra-chord-charts__get_chord_of_the_day"
    ],
    "ask": [
      "mcp__gpra-chord-charts__send_feedback"
    ],
    "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 gpra-chord-charts. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.slshults/gpra-chord-charts/changes.xml

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1 of these tools change something. Run those as governed actions.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:49 UTC.

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