agentmods.dev

agent-skills: Instructions file for Codex

AGENTS.md

agent-skills AGENTS.md is an instructions file for Codex, OpenCode from steadwing/agent-skills. It costs 405 tokens per session, scanned A, original, MIT.

A repository instruction file for AI agents working on a collection of Agent Skills. It explains the project layout, naming rules, supporting files, and editing conventions.

In plain words
What is it for?
Use it as a guide when editing skill instructions, reference documents, helper scripts, plugin files, or installation hooks in the repository.
Why use it?
It gives coding agents the context needed to change skills without breaking their manifests, scripts, hooks, or marketplace metadata.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions Claude Code.

This is steadwing/agent-skills's own configuration. It tells Codex and OpenCode how to work on agent-skills itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agent-skills configures →

not rated 2repo 1mo ago A scan 405 tokens original MIT
View source ↗ steadwing/agent-skills steadwing.com
Reuse

Borrowing it

Nothing to install: this file belongs to steadwing/agent-skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/steadwing/agent-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/steadwing/agent-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 agent-skills AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/steadwing/agent-skills/agents-md/github.svg)](https://agentmods.dev/instructions/steadwing/agent-skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/steadwing/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/steadwing/agent-skills/agents-md/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 agent-skills AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/steadwing/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/steadwing/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 405 This file is loaded in full into every session.
When invoked 405 The same file — it is already loaded in full.
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 $0.00405 $0.00405
Opus 5.5 $0.00162 $0.00162
Sonnet 5.5 $0.00081 $0.00081
Haiku 4.5 $0.00040 $0.00040

Measured 2mo ago against content hash 4c292cbdcf5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-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 2mo 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 · 32 lines

What it actually says

Repository guide for AI agents

This repo packages Agent Skills for Steadwing, an AI Root Cause Analysis platform. The skills let a coding agent self-register with Steadwing and trigger RCA on production errors.

Layout

  • skills/<name>/SKILL.md — the skill manifest and instructions (the entry point an agent reads).
  • skills/<name>/references/ — supporting docs loaded on demand.
  • skills/<name>/scripts/ — helper scripts (e.g. the error-detection hook and its installer).
  • skills.sh.json — registry/grouping metadata for the skills installer.
  • .claude-plugin/plugin.json — Claude Code plugin manifest (identity, version, license).
  • .claude-plugin/marketplace.json — catalog for the self-hosted marketplace.
  • hooks/hooks.json — registers the detection hook for plugin installs. The install_hook.py script covers skills-CLI installs instead; keep the two in sync when the hook path changes.

Conventions

  • SKILL.md frontmatter requires name and description. The description must clearly state when to use the skill — it's how agents decide relevance.
  • Keep SKILL.md focused; push detail into references/.
  • Scripts must be dependency-free (Python 3 stdlib only) and cross-platform where feasible.
  • The detection hook is passive: it surfaces errors and asks; it never calls the Steadwing API or sends data without explicit user confirmation.

Editing a skill

  1. Update skills/<name>/SKILL.md (and references/ as needed).
  2. If you add a skill, list it in skills.sh.json and the README table.
  3. Validate JSON and SKILL frontmatter (CI runs .github/workflows/validate.yml).
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. 2mo ago First seen · 32 lines · 405 tokens per session scan A 4c292cbdcf5f

Subscribe to this mod's changes

agent-skills AGENTS.md is an instructions file published in the GitHub repository steadwing/agent-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 405 tokens to every session, about $0.0016 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 2026-08-31.

Building agentsaiai-agentsskills
Related

agent-skills AGENTS.md compared with instructions from other repositories

agent-skills AGENTS.md next to 6 instructions from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
agent-skills AGENTS.mdsteadwing/agent-skillsInstructions file21mo agoMITA405Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA2,022GitHub Copilot