cp-skill-health-check

cp-skill-health-check is a skill for Claude Code from zby/commonplace. It costs 34 tokens per session (1,801 once invoked), scanned A, original, CC-BY-4.0.

A diagnostic workflow for checking a Commonplace project's layout, how promoted skills are found, whether a user-level uv tool is installed, which command owns the PATH, and why launching may fail. uv is a tool for installing and running Python programs.

In plain words
What is it for?
Use it when Commonplace commands or promoted skills cannot be found, installed, or launched correctly.
Why use it?
It narrows down project, installation, command-path, and startup problems in one check.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it when Commonplace commands or promoted skills cannot be found, installed, or launched correctly.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zby/commonplace/cp-skill-health-check
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.

Any agent
npx skills add zby/commonplace --skill cp-skill-health-check
Clone the repo
git clone --depth 1 https://github.com/zby/commonplace

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 cp-skill-health-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/zby/commonplace/cp-skill-health-check/github.svg)](https://agentmods.dev/skills/zby/commonplace/cp-skill-health-check)
Your own site
<a href="https://agentmods.dev/skills/zby/commonplace/cp-skill-health-check"><img src="https://agentmods.dev/badge/skills/zby/commonplace/cp-skill-health-check/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 cp-skill-health-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/zby/commonplace/cp-skill-health-check"><img src="https://agentmods.dev/badge/skills/zby/commonplace/cp-skill-health-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,801 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00034 $0.01801
Opus 5 $0.00017 $0.00901
Sonnet 5 $0.00007 $0.00360
Haiku 4.5 $0.00003 $0.00180

Measured 11d ago against content hash 68fead53c3b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cp-skill-health-check 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 11d 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.

kb/instructions/cp-skill-health-check/SKILL.md · 188 lines

The source is not reproduced here

Licensed CC-BY-4.0

The repository is licensed CC-BY-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 11d ago First seen · 188 lines · 34 tokens per session scan A 68fead53c3b9

Subscribe to this mod's changes

cp-skill-health-check is a skill published in the GitHub repository zby/commonplace (88 stars, last pushed yesterday), licensed CC-BY-4.0. It adds 34 tokens to every session and 1,801 once invoked, about $0.0002 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 2026-08-30.

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