plugin-quality

plugin-quality is a plugin for Claude Code from melodic-software/claude-code-plugins. Its manifest loads nothing; the 1 agent it bundles cost 99 tokens per session together, scanned A, original, MIT.

A workflow for auditing Claude Code plugin components after they have been used, checking what they actually did against what they claimed.

In plain words
What is it for?
It helps audit skills, agents, hooks, commands, and settings through evidence capture, fresh-context review, contract checks, review points, and confirmed work-item drafts.
Why use it?
It turns plugin behavior into documented evidence and exposes blind spots before findings become work items.

Plugin for Claude Code

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

Good fit It helps audit skills, agents, hooks, commands, and settings through evidence capture, fresh-context review, contract checks, review points, and confirmed work-item drafts.

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

README.md
[![agentmods](https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/plugin-quality/github.svg)](https://agentmods.dev/plugins/melodic-software/claude-code-plugins/plugin-quality)
Your own site
<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/plugin-quality"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/plugin-quality/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 plugin-quality

Your own site · 80×15
<a href="https://agentmods.dev/plugins/melodic-software/claude-code-plugins/plugin-quality"><img src="https://agentmods.dev/badge/plugins/melodic-software/claude-code-plugins/plugin-quality.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 agent cost 99 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

plugin-quality 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 yesterday.

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/plugin-quality/.claude-plugin/plugin.json · 21 lines

What it actually says

{
  "$schema": "https://json.schemastore.org/claude-code-plugin-manifest.json",
  "name": "plugin-quality",
  "version": "0.7.12",
  "description": "Post-use behavioral audit of Claude Code plugin components: a six-step audit workflow (evidence capture, grounded mapping in a fresh subagent, blindspot pass, interactive contract lock, presence-gated review seams, work-item emit with draft+confirm) over any skill, agent, hook, command, or config you have actually used — zone-informed by context-guard snapshots when present, conservative when not.",
  "author": {
    "name": "Melodic Software",
    "email": "[email protected]"
  },
  "license": "MIT",
  "keywords": [
    "plugin-audit",
    "audit",
    "review",
    "quality",
    "work-item",
    "context-guard",
    "skill"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 agent travel with it, and installing the plugin installs all of them — 99 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. yesterday Changed d78e4e565680
  2. 2d ago Changed f595a447c5bd
  3. 4d ago Changed 726f39738d82
  4. 6d ago Changed 21535e970138
  5. 7d ago First seen · 21 lines scan A 3089e8f14f16

Subscribe to this mod's changes

plugin-quality is a plugin published in the GitHub repository melodic-software/claude-code-plugins (16 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.