mcp-tools

mcp-tools is a plugin for Claude Code from melodic-software/claude-code-plugins. Its manifest loads nothing; the 1 skill it bundles cost 216 tokens per session together, scanned A, original, MIT.

A checker for tools exposed by MCP servers, the services that let coding agents call external capabilities. It reviews each tool's description, inputs, name, and annotations and gives a pass, warning, or fail result.

In plain words
What is it for?
Use it to audit MCP servers written in Python, TypeScript, or .NET and produce a per-tool quality scorecard.
Why use it?
Poorly described tool definitions can make agents misunderstand available actions or use them unreliably.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code.

Good fit Use it to audit MCP servers written in Python, TypeScript, or .NET and produce a per-tool quality scorecard.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add melodic-software/claude-code-plugins
/plugin install mcp-tools
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/melodic-software/claude-code-plugins

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for mcp-tools

README.md
[![agentmods](https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/mcp-tools/github.svg)](https://agentmods.dev/plugins/melodic-software/claude-code-plugins/mcp-tools)
Your own site
<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/mcp-tools"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/mcp-tools/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for mcp-tools

Your own site · 80×15
<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/mcp-tools"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/mcp-tools.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 216 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

mcp-tools scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/mcp-tools/.claude-plugin/plugin.json · 19 lines

What it actually says

{
  "name": "mcp-tools",
  "version": "0.8.0",
  "description": "Two MCP audits. audit scores the tool definitions of a server you build against MCP-specification, Anthropic tool-design, and Claude-Code client criteria in a per-tool PASS/WARN/FAIL scorecard (Python, TypeScript, .NET). audit-posture inventories the MCP servers your Claude Code configuration runs and flags supply-chain risks such as floating package versions, without running any server.",
  "author": {
    "name": "Melodic Software",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": [
    "mcp",
    "tools",
    "audit",
    "quality",
    "scorecard",
    "skill"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 216 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago Changed e69978ef60bd
  2. 4d ago Changed df51e2f96a94
  3. 11d ago Changed 9891b7575cbd
  4. 12d ago Changed · -1 lines 44075f819d3c
  5. 13d ago Changed 144fb4cea583
  6. 16d ago Changed 3c897541ffe5
  7. 17d ago Changed 1b385345653f
  8. 18d ago Changed cfa8b0429e44
  9. 20d ago Changed cea7da7e6c90
  10. 22d ago First seen · 20 lines scan A ecafc674c009

Subscribe to this mod's changes

mcp-tools is a plugin published in the GitHub repository melodic-software/claude-code-plugins (25 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.