cpv-validate-plugin-folder

cpv-validate-plugin-folder is a skill for Claude Code, Codex from Emasoft/claude-plugins-validation. It costs 132 tokens per session (1,765 once invoked), scanned A, original, MIT.

READ-ONLY full scan of ONE plugin or skill folder — structure and rules, the full security pipeline, secret and sensitive-data leaks, and prompt-cache CA-01..CA-07 findings in a single pass. Nothing in the target is modified. Prints a severity table, the report path, and the exact agent that fixes each finding class.…

Skill for Claude CodeCodex

Installs and runs on its own, but its text points at files inside the plugin that ships it — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed.

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.

agentmods
npx agentmods add skills/emasoft/claude-plugins-validation/cpv-validate-plugin-folder
Any agent
npx skills add Emasoft/claude-plugins-validation --skill cpv-validate-plugin-folder
Clone the repo
git clone --depth 1 https://github.com/Emasoft/claude-plugins-validation

Made for: Claude Code, Codex.

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 cpv-validate-plugin-folder

README.md
[![agentmods](https://agentmods.dev/badge/skills/emasoft/claude-plugins-validation/cpv-validate-plugin-folder.svg)](https://agentmods.dev/skills/emasoft/claude-plugins-validation/cpv-validate-plugin-folder)
Your own site
<a href="https://agentmods.dev/skills/emasoft/claude-plugins-validation/cpv-validate-plugin-folder"><img src="https://agentmods.dev/badge/skills/emasoft/claude-plugins-validation/cpv-validate-plugin-folder.svg" alt="Measured on agentmods" height="20"></a>
Per session 132 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,765 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00132 $0.01765
Opus 5 $0.00066 $0.00882
Sonnet 5 $0.00026 $0.00353
Haiku 4.5 $0.00013 $0.00177

Measured today against content hash e32afe798134, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cpv-validate-plugin-folder 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 today.

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.

skills/cpv-validate-plugin-folder/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

cpv-validate-plugin-folder

Read-only. Runs one script and reports what it printed.

Overview

One command, full coverage, for one folder shape at a time. The skill composes CPV's existing validators — plugin --strict, marketplace, skill --strict, and the full security scan — behind a single entry point (cpv_validate_plugin_folder.py) so a caller never has to know in advance which validator applies. It never implements a rule of its own: every finding traces back to an existing CPV validator, and the skill's only job is detecting the folder's shape, dispatching the right validator combination, merging the results, and reporting a single severity table with the report path and the fixer to run next.

Prerequisites

  • A Python 3 interpreter on PATH (the script is invoked as python3 "${CLAUDE_PLUGIN_ROOT}/scripts/cpv_validate_plugin_folder.py").
  • git on PATH when the target is a remote URL or an owner/repo slug — the script clones it into a temp sandbox before scanning.
  • No other setup: the script requires no network access for a local path, no installation step, and never runs the plugin/skill/repo it scans.

Instructions

  1. Run exactly this, substituting the user's argument when they gave one and omitting it entirely when they did not — the script resolves the default itself, so do not guess a path on its behalf:

    python3 "${CLAUDE_PLUGIN_ROOT}/scripts/cpv_validate_plugin_folder.py" [folder-path-or-repo-url]
    
  2. Relay the script's output verbatim in substance: the severity table, the report path, and the suggested fixer for each failing scan.

  3. Stop there. Do not summarise findings away, do not re-run individual validators, and do not fix anything — this skill is the read-only half. Fixing is a separate, explicit user decision, which is why the script names the fixer instead of dispatching it.

The skill is done when the table, the report path and any fixer suggestions have been relayed; a non-zero exit is a verdict to report, not an error to retry.

Read the full file on GitHub · 153 lines

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. today First seen · 153 lines · 132 tokens per session scan A e32afe798134

Subscribe to this mod's changes

cpv-validate-plugin-folder is a skill published in the GitHub repository Emasoft/claude-plugins-validation (4 stars, last pushed yesterday), licensed MIT. It adds 132 tokens to every session and 1,765 once invoked, about $0.0007 per session on Opus 5. 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.

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