F

mcp.guitarpracticeroutine.com

https://mcp.guitarpracticeroutine.com/mcp
45/100 · MCP Trust Grade · checked 24d ago · MCP 2025-06-18

Is the mcp.guitarpracticeroutine.com MCP server safe to use?

Independent trust grade F (45/100). Tool "get_chord_chart_by_name" description contains prompt-injection / hidden-instruction markup. wmcp.sh continuously watches mcp.guitarpracticeroutine.com for tool drift and rug-pulls. The grade is free and identical whether or not the operator pays.

✓ Watched since 2026-10-06 — behavioral baseline locked. We re-check this server's tool surface on a schedule; if it adds, removes, or silently rewrites a tool (rug-pull), we record it.

What it offers — 3 tools · Search

get_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://guit

get_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

get_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

Spec conformance20%100
Security (OWASP MCP)30%15
Reliability / performance20%70
Tool hygiene15%80
Transparency / provenance15%70

Observed behavior

No proxied traffic observed for this host yet. Connect it at /connect and its grade gains a measured Reliability score + per-tool behavioral evidence — the half a static scan can't produce.

Findings

FAILMCP01 Tool "get_chord_chart_by_name" description contains prompt-injection / hidden-instruction markup.
FAILMCP01 Tool "get_chord_chart_by_id" description contains prompt-injection / hidden-instruction markup.
FAILMCP01 Tool "get_chord_of_the_day" description contains prompt-injection / hidden-instruction markup.
Developers see this F before they connect to mcp.guitarpracticeroutine.com.
Clear it: a Deep Audit shows exactly what to fix, and Monitoring proves the fix to everyone who checks your grade. Drop your email and we'll send this server's full findings + the fix path. The grade itself stays free.
Grade another server

We re-grade mcp.guitarpracticeroutine.com on a schedule and alert your Slack/webhook the moment its tools change or its grade drops — rug-pull insurance for the connection.

Run mcp.guitarpracticeroutine.com? Claim it (free) to get drift alerts and show an independently-verified trust badge. The grade stays free — claiming just ties it to you.

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A 1200×630 card with the grade + audit — drop it in a post, Slack, or your repo.

MCP Trust report card — mcp.guitarpracticeroutine.com grade F
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Embed this grade

A live badge — it re-verifies itself and shows current stability. Static scorecards can't. Paste it in your README or site to show users you're independently audited.

MCP Trust Grade F · wmcp.sh
[![MCP Trust Grade F](https://wmcp.sh/mcp/grade/mcp.guitarpracticeroutine.com/badge.svg)](https://wmcp.sh/mcp/grade/mcp.guitarpracticeroutine.com)
<a href="https://wmcp.sh/mcp/grade/mcp.guitarpracticeroutine.com"><img src="https://wmcp.sh/mcp/grade/mcp.guitarpracticeroutine.com/badge.svg" alt="MCP Trust Grade F · wmcp.sh"></a>

Agents: check this before connecting

Add the wmcp.sh trust oracle as an MCP server and call grade_mcp_server / check_mcp_drift in your agent's pre-connection gate:

https://wmcp.sh/mcp/trust
How this grade is computed. An open, independent rubric — Spec conformance (20%), Security mapped to the OWASP MCP Top 10 (30%), Reliability (20%), Tool hygiene (15%), Transparency (15%) — run by connecting to the server and inspecting its real MCP surface. The grade is free and identical whether or not the operator pays. v1 uses static + spec signals from a single connection; continuous uptime, real latency, and annotation-truthing (declared readOnly vs observed behavior) layer on via the wmcp.sh proxy.