agent-skills: Instructions file for Codex

AGENTS.md

agent-skills AGENTS.md is an instructions file for Codex, OpenCode from tronghieu/agent-skills. It costs 1,451 tokens per session, scanned A, original, MIT.

A set of AGENTS.md instructions for the tronghieu/agent-skills repository. AGENTS.md is a file that tells coding agents how to work in a project.

In plain words
What is it for?
Use it when creating skills or navigating the repository overview, directory layout, naming conventions, and agent instructions.
Why use it?
It gives agents repository-specific guidance instead of leaving project structure and naming rules implicit.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: reads .claude/ paths; mentions Claude Code; mentions AGENTS.md.

This is tronghieu/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 →

Reuse

Borrowing it

Nothing to install: this file belongs to tronghieu/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/tronghieu/agent-skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/tronghieu/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
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Your own site
<a href="https://agentmods.dev/instructions/tronghieu/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/tronghieu/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/tronghieu/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/tronghieu/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,451 This file is loaded in full into every session.
When invoked 1,451 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 $0.01451 $0.01451
Opus 5.5 $0.00580 $0.00580
Sonnet 5.5 $0.00290 $0.00290
Haiku 4.5 $0.00145 $0.00145

Measured 16d ago against content hash d39b86dc232b, 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 16d 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 · 134 lines

How it starts

The opening of the file, as written. The whole thing — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file provides guidance to AI coding agents (Claude Code, Cursor, Copilot, etc.) when working with code in this repository. use skill-creator skill for creating agent skill

Repository Overview

A collection of skills for AI agents. Skills are packaged instructions and scripts that extend Claude's capabilities.

Creating a New Skill

Directory Structure

skills/
  {skill-name}/           # kebab-case directory name
    SKILL.md              # Required: skill definition
    scripts/              # Required: executable scripts
      {script-name}.sh    # Bash or Python, both first-class (.sh / .py)
  {skill-name}.zip        # Required: packaged for distribution

Naming Conventions

  • Skill directory: kebab-case (e.g., system-prompt-creator, log-monitor)
  • SKILL.md: Always uppercase, always this exact filename
  • Scripts: kebab-case.sh for Bash (e.g., deploy.sh, fetch-logs.sh); snake_case.py for new Python scripts (e.g., profile_data.py, board_check.py) — one older script, export-deck-pdf.py, predates this and stays kebab-case
  • Zip file: Must match directory name exactly: {skill-name}.zip

SKILL.md Format

---
name: {skill-name}
description: {One sentence describing when to use this skill. Include trigger phrases like "Deploy my app", "Check logs", etc.}
---

# {Skill Title}

{Brief description of what the skill does.}

## How It Works

{Numbered list explaining the skill's workflow}

## Usage

```bash
bash /mnt/skills/user/{skill-name}/scripts/{script}.sh [args]

Arguments:

  • arg1 - Description (defaults to X)

Examples: {Show 2-3 common usage patterns}

Output

{Show example output users will see}

Present Results to User

{Template for how Claude should format results when presenting to users}

Troubleshooting

{Common issues and solutions, especially network/permissions errors}


### Best Practices for Context Efficiency

Skills are loaded on-demand — only the skill name and description are loaded at startup. The full `SKILL.md` loads into context only when the agent decides the skill is relevant. To minimize context usage:

Read the full file on GitHub · 134 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. 16d ago Changed · +1 tokens per session d39b86dc232b
  2. 28d ago Changed · +14 lines · +408 tokens per session 8d36860ad184
  3. 1mo ago Changed · -44 lines · -699 tokens per session 59689996ed2e
  4. 1mo ago First seen · 164 lines · 1,741 tokens per session scan A c19cbf389656

Subscribe to this mod's changes

agent-skills AGENTS.md is an instructions file published in the GitHub repository tronghieu/agent-skills (84 stars, last pushed 2d ago), licensed MIT. It adds 1,451 tokens to every session, about $0.0058 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 2026-08-30.

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