# Guitar Practice Routine App — Chord Charts (npm · gpra-chord-charts-mcp)

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

- Trust score: 80/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- remote · `mcp.guitarpracticeroutine.com`: 65/100, [markdown](https://verifymcp.io/servers/slshults-gpra-chord-charts/mcp.md), [page](https://verifymcp.io/servers/slshults-gpra-chord-charts/mcp)
- npm · `gpra-chord-charts-mcp`: 80/100 (this document), [markdown](https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp.md), [page](https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp)

## Channel facts

- Registry: `npm`
- Package: `gpra-chord-charts-mcp`
- Version: `0.1.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-21.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 45 of 135 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 21 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 622 tokens (~207/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 73/100
  - Stability observed for 22 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Guitar Practice Routine App — Chord Charts MCP server?

Guitar Practice Routine App — Chord Charts runs locally as an npm package, launched with npx -y gpra-chord-charts-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add slshults-gpra-chord-charts -- npx -y gpra-chord-charts-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "slshults-gpra-chord-charts": {
      "command": "npx",
      "args": [
        "-y",
        "gpra-chord-charts-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "slshults-gpra-chord-charts": {
      "command": "npx",
      "args": [
        "-y",
        "gpra-chord-charts-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add slshults-gpra-chord-charts -- npx -y gpra-chord-charts-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "slshults-gpra-chord-charts": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "gpra-chord-charts-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add slshults-gpra-chord-charts --command npx --arg -y --arg gpra-chord-charts-mcp
```

### Hermes

```yaml
mcp_servers:
  slshults-gpra-chord-charts:
    command: "npx"
    args: ["-y", "gpra-chord-charts-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "slshults-gpra-chord-charts": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "gpra-chord-charts-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add slshults-gpra-chord-charts -t stdio -c npx -a -y gpra-chord-charts-mcp
```

### Other

```json
{
  "mcpServers": {
    "slshults-gpra-chord-charts": {
      "command": "npx",
      "args": [
        "-y",
        "gpra-chord-charts-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-21 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-16 (score 77, 0)

- [security improvement] CVE-2025-71329 no longer affects this package
- [security improvement] CVE-2025-71330 no longer affects this package
- [security improvement] Known CVEs: partial → pass

### 2026-09-15 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (3)

### `get_chord_chart_by_name` (~380 tokens)

Get a chord chart by name

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.

Input parameters:

- `format` (string): Which representations to return. Defaults to "text", which includes a direct URL to a PNG of the chart — embed that where your surface renders images. Use "image" or "both" only if you need the PNG b…
- `name` (string, required): A single chord name as written on a chart, e.g. "Am7" or "D/F#".

### `get_chord_chart_by_id` (~123 tokens)

Get a chord chart by id

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.

Input parameters:

- `format` (string): Which representations to return. Defaults to "text", which includes a direct URL to a PNG of the chart — embed that where your surface renders images. Use "image" or "both" only if you need the PNG b…
- `id` (integer, required): Numeric chord id.

### `get_chord_of_the_day` (~119 tokens)

Chord of the day

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.

Input parameters:

- `format` (string): Which representations to return. Defaults to "text", which includes a direct URL to a PNG of the chart — embed that where your surface renders images. Use "image" or "both" only if you need the PNG b…

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp#diagnostics

## Score history

- 2026-09-21: 80
- 2026-09-20: 79
- 2026-09-19: 79
- 2026-09-18: 78
- 2026-09-17: 78
- 2026-09-16: 77
- 2026-09-15: 77
- 2026-09-14: 76
- 2026-09-13: 76
- 2026-09-12: 75
- 2026-09-11: 75
- 2026-09-10: 75
- 2026-09-09: 74
- 2026-09-08: 74
- 2026-09-07: 73
- 2026-09-06: 69
- 2026-09-05: 69
- 2026-09-04: 69
- 2026-09-03: 69
- 2026-09-02: 69
- 2026-09-01: 69
- 2026-08-31: 69
- 2026-08-30: 54

## Common questions

### What is the Guitar Practice Routine App — Chord Charts MCP server?

Guitar Practice Routine App — Chord Charts is an MCP server listed in the public MCP registry as io.github.slshults/gpra-chord-charts. Look up a guitar chord by name and get a text chord diagram. 12,708 standard-tuning names. This page covers its npm package (gpra-chord-charts-mcp).

### Is the Guitar Practice Routine App — Chord Charts MCP server safe to use?

Guitar Practice Routine App — Chord Charts scores 80 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Guitar Practice Routine App — Chord Charts MCP server expose?

Guitar Practice Routine App — Chord Charts exposes 3 tools: get_chord_chart_by_name, get_chord_chart_by_id, get_chord_of_the_day. Their descriptions and schemas cost roughly 622 tokens of context every time the server is loaded.

### Is the Guitar Practice Routine App — Chord Charts MCP server still maintained?

Guitar Practice Routine App — Chord Charts is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Guitar Practice Routine App — Chord Charts MCP server under?

Guitar Practice Routine App — Chord Charts declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/gpra-chord-charts-mcp
- Socket report: https://socket.dev/npm/package/gpra-chord-charts-mcp
- Repository: https://github.com/slshults/gpra-chord-charts-mcp
- Website: https://guitarpracticeroutine.com/find-a-chord-chart
- Changelog RSS feed: https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp.json
- HTML version of this page: https://verifymcp.io/servers/slshults-gpra-chord-charts/gpra-chord-charts-mcp