claude-plugin-guide

claude-plugin-guide is a skill for Codex from kochetkov-ma/claude-brewcode. It costs 27 tokens per session (604 once invoked), scanned A, original, MIT.

A reference skill for creating Claude Code plugins. It looks up plugin requirements in repository references and official documentation and provides read-only guidance for Claude products.

In plain words
What is it for?
Use it when designing or checking a Claude Code plugin against its documented requirements.
Why use it?
It avoids relying on incomplete or outdated assumptions about how Claude Code plugins should be authored.

Skill for Codex

Written for Codex: installed under .codex/. Also seen: mentions .claude-plugin; mentions Claude Code; reads ~/.codex paths.

Good fit Use it when designing or checking a Claude Code plugin against its documented requirements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kochetkov-ma/claude-brewcode/claude-plugin-guide
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 kochetkov-ma/claude-brewcode --skill claude-plugin-guide
Clone the repo
git clone --depth 1 https://github.com/kochetkov-ma/claude-brewcode

Made for: 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 claude-plugin-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide/github.svg)](https://agentmods.dev/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide)
Your own site
<a href="https://agentmods.dev/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide"><img src="https://agentmods.dev/badge/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide/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 claude-plugin-guide

Your own site · 80×15
<a href="https://agentmods.dev/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide"><img src="https://agentmods.dev/badge/skills/kochetkov-ma/claude-brewcode/claude-plugin-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 604 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 original 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 $0.00027 $0.00604
Opus 5.5 $0.00011 $0.00242
Sonnet 5.5 $0.00005 $0.00121
Haiku 4.5 $0.00003 $0.00060

Measured 15d ago against content hash 3eb980337777, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-plugin-guide 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 15d 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.

.codex/skills/claude-plugin-guide/SKILL.md · 21 lines

What it actually says

Claude plugin authoring reference

Resolve the RU/EN question into the relevant manifest, component, marketplace, hook, or installation topic. Return a concise answer with source paths and supported examples. This is read-only product guidance: do not install, enable, update, launch, or repair plugins, execute Claude commands, or self-update this guide.

Read only references relevant to the question:

  • Native Claude product-authoring rules: distributed Claude skill frontmatter, prompt-first invocation, setup lifecycle, and validation; excludes native Codex skills.
  • Product skill-authoring reference, frontmatter catalog, and prompt contract: canonical tracked skill contracts. Agent-return-setup demonstrates structural frontmatter/PLAN/lifecycle, not default routing: its default descriptions conflict. Validate affected product skill directories with bash brewcode/skills/skills/scripts/validate-skill.sh <affected-skill-directory>.
  • Setup defaults are per skill: compare documented behavior with executable resolution and report disagreements. Teams' parser and docsync use installed status/absent install; semble routing defaults to read-only status, never a bare machine-level install.
  • Product agent-authoring reference: tracked Claude agent contracts, distinct from native .codex/agents/*.toml.
  • Product hook reference: tracked Claude product hook contracts; embedded commands and Claude tools are reference text, never executable Codex instructions.
  • Relevant tracked manifests under each product's .claude-plugin/ and its skills/, agents/, and hooks/: actual implementation. Locate with rg --files; inspect focused ranges.
  • Official plugin reference, marketplace reference, and plugin guide: verify current or uncertain behavior before presenting it as current.

Distinguish tracked implementation, dated reference claims, and verified official behavior. Report source disagreements with evidence. Claude manifests and substitution tokens describe the shipped Claude product; native Codex uses project instructions, skills, agents, and tools with plugins disabled.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 15d ago First seen · 21 lines · 27 tokens per session scan A 3eb980337777

Subscribe to this mod's changes

claude-plugin-guide is a skill published in the GitHub repository kochetkov-ma/claude-brewcode (32 stars, last pushed today), licensed MIT. It adds 27 tokens to every session and 604 once invoked, about $0.0001 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 2026-10-01.

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