skills AGENTS.md

skills AGENTS.md is an instructions file for Codex, OpenCode from yschimke/skills. It costs 555 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for maintaining a collection of agent skills, which are written guides that help coding agents perform specific tasks. They describe the required file layout and related documentation updates.

In plain words
What is it for?
Use them when adding, renaming, or removing a skill in the yschimke/skills repository. They also explain when version changes are appropriate.
Why use it?
They prevent new, renamed, or removed skills from leaving the repository’s directory structure, README, or cross-references out of sync.

Instructions file for CodexOpenCode

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 instructions/yschimke/skills/agents-md
Clone the repo
git clone --depth 1 https://github.com/yschimke/skills

Made for: Codex, OpenCode.

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 skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/yschimke/skills/agents-md.svg)](https://agentmods.dev/instructions/yschimke/skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/yschimke/skills/agents-md"><img src="https://agentmods.dev/badge/instructions/yschimke/skills/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 555 This file is loaded in full into every session.
When invoked 555 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00555 $0.00555
Opus 5 $0.00278 $0.00278
Sonnet 5 $0.00111 $0.00111
Haiku 4.5 $0.00056 $0.00056

Measured 4d ago against content hash e75f593fb557, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skills AGENTS.md 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 4d 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.

AGENTS.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Instructions for AI agents (Claude Code, Codex, Gemini, etc.) working in this repo.

This is a content-only repo. The skills here are markdown documentation that pairs with the compose-preview CLI and Gradle plugin published from yschimke/compose-ai-tools. The CLI lives there; consumer guidance lives here.

When adding, renaming, or removing a skill

  1. Update README.md — keep the skills list in sync. Each entry links to the skill's SKILL.md and summarises what it covers. If you add a skill and don't update the README, the change is incomplete.
  2. Do not bump the plugin version unless explicitly asked. When you are asked for a release, edit .claude-plugin/plugin.json using semver: patch for wording/docs, minor for a new skill or new triggers, major for removals or breaking renames.

Skill layout

  • Skills live at skills/<skill-name>/SKILL.md. Flat — never nest by topic. Encode the topic in the directory name (e.g. compose-preview-review, not compose-preview/review).
  • The name: in the SKILL.md frontmatter must match the directory name exactly. Use lowercase kebab-case for both.
  • Supporting files (design notes, scripts) sit alongside SKILL.md in the skill dir.

Manifests

  • .claude-plugin/marketplace.json and .claude-plugin/plugin.json are both JSON (not JSONC). Validate with jq . <file> before committing.
  • The plugin name in both manifests must stay yschimke-skills.

Cross-repo references

The compose-preview skill documents the CLI shipped from the compose-ai-tools repo, so it cites release tags (e.g. v1.3.0) and links into that repo. Keep those links stable. When the CLI gets a new version, update referenced version strings here; do not introduce a release-please marker in this repo — versions in skill text track the upstream CLI, not this plugin.

What not to do

  • Don't add CI, build tooling, or Gradle config here — this is a content repo. CI, packaging, and the renderer live in compose-ai-tools.
  • Don't rename existing skill directories "for consistency" without a concrete reason; renames break user references and bundled installs.

Read the full file on GitHub · 52 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. 4d ago First seen · 52 lines · 555 tokens per session scan A e75f593fb557

Subscribe to this mod's changes

skills AGENTS.md is an instructions file published in the GitHub repository yschimke/skills (2 stars, last pushed 4d ago), licensed Apache-2.0. It adds 555 tokens to every session, about $0.0028 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 2026-08-31.