Guitar Practice Routine App — Chord Charts
NPM · GPRA-CHORD-CHARTS-MCP · 2 COMPONENTS · SCANNED SEP 20
Look up a guitar chord by name and get a text chord diagram. 12,708 standard-tuning names.
Available components
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. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 45 of 135 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 20 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability72
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management70
- Stability observed for 21 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
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.
npm · gpra-chord-charts-mcp
claude mcp add slshults-gpra-chord-charts -- npx -y gpra-chord-charts-mcp
{
"mcpServers": {
"slshults-gpra-chord-charts": {
"command": "npx",
"args": [
"-y",
"gpra-chord-charts-mcp"
]
}
}
} {
"servers": {
"slshults-gpra-chord-charts": {
"command": "npx",
"args": [
"-y",
"gpra-chord-charts-mcp"
]
}
}
} codex mcp add slshults-gpra-chord-charts -- npx -y gpra-chord-charts-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"slshults-gpra-chord-charts": {
"type": "local",
"command": [
"npx",
"-y",
"gpra-chord-charts-mcp"
],
"enabled": true
}
}
} openclaw mcp add slshults-gpra-chord-charts --command npx --arg -y --arg gpra-chord-charts-mcp
mcp_servers:
slshults-gpra-chord-charts:
command: "npx"
args: ["-y", "gpra-chord-charts-mcp"] {
"McpServers": {
"slshults-gpra-chord-charts": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"gpra-chord-charts-mcp"
]
}
}
} assistant mcp add slshults-gpra-chord-charts -t stdio -c npx -a -y gpra-chord-charts-mcp
{
"mcpServers": {
"slshults-gpra-chord-charts": {
"command": "npx",
"args": [
"-y",
"gpra-chord-charts-mcp"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 19 Sept 26 +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.
- 17 Sept 26 +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.
- 16 Sept 26 0
- CVE-2025-71329 no longer affects this package ▲ security
- CVE-2025-71330 no longer affects this package ▲ security
- Known CVEs: partial → pass ▲ security
- 15 Sept 26 +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.
- 13 Sept 26 +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.
- 10 Sept 26 +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.
- 8 Sept 26 +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.
- 7 Sept 26 +4
- Stability: unverified → 0.27 ▲ functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed npm/gpra-chord-charts-mcp@0.1.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 135 packages
| Packages resolved | 135 |
|---|---|
| Stale | 45 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_chord_chart_by_id Get a chord chart by id ~123
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Numeric chord id. |
No output schema declared.
No examples provided.
get_chord_chart_by_name Get a chord chart by name ~380
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | A single chord name as written on a chart, e.g. "Am7" or "D/F#". |
No output schema declared.
No examples provided.
get_chord_of_the_day Chord of the day ~119
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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… |
No output schema declared.
No examples provided.
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 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 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 20 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.