cp-skill-library

cp-skill-library is a skill for Claude Code from zby/commonplace. It costs 47 tokens per session (330 once invoked), scanned A, original, CC-BY-4.0.

A lookup tool for finding and following procedures, instructions, or named types in a Commonplace library. The provided details do not explain what Commonplace is.

In plain words
What is it for?
Use it when someone names a Commonplace procedure or asks how Commonplace handles a task.
Why use it?
It helps when a task depends on an existing Commonplace procedure instead of an improvised answer. More specific Commonplace tools should be used when they apply.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it when someone names a Commonplace procedure or asks how Commonplace handles a task.

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Install with agentmods
npx agentmods add skills/zby/commonplace/cp-skill-library
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-library
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-library

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/zby/commonplace/cp-skill-library"><img src="https://agentmods.dev/badge/skills/zby/commonplace/cp-skill-library.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 330 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 $0.00047 $0.00330
Opus 5.5 $0.00019 $0.00132
Sonnet 5.5 $0.00009 $0.00066
Haiku 4.5 $0.00005 $0.00033

Measured 19d ago against content hash dd1928680498, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cp-skill-library 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 19d 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-library/SKILL.md · 23 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. 19d ago Changed dd1928680498
  2. 20d ago First seen · 23 lines · 47 tokens per session scan A d04e1cf7d8c0

Subscribe to this mod's changes

cp-skill-library is a skill published in the GitHub repository zby/commonplace (91 stars, last pushed 6d ago), licensed CC-BY-4.0. It adds 47 tokens to every session and 330 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-26.

Related

Other skills, from other repositories