agent_skills: Instructions file for Codex

AGENTS.md

agent_skills AGENTS.md is an instructions file for Codex, OpenCode from jorgealves/agent_skills. It costs 2,009 tokens per session, scanned C, original, GPL-3.0.

Repository instructions for AI coding agents working with the agent_skills project. They describe where skills belong and what a skill file and its required front matter must contain.

In plain words
What is it for?
Use them when adding, reviewing, or maintaining skills in the jorgealves/agent_skills repository. They cover skill locations, AGENTS.md scope, and skill.md requirements.
Why use it?
They give an agent project-specific rules that may not be obvious from the code alone. This helps it place skills correctly and follow the expected format.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is jorgealves/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 โ†’

Reuse

Borrowing it

Nothing to install: this file belongs to jorgealves/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/jorgealves/agent_skills/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/jorgealves/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/jorgealves/agent_skills/agents-md/github.svg)](https://agentmods.dev/instructions/jorgealves/agent_skills/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/jorgealves/agent_skills/agents-md"><img src="https://agentmods.dev/badge/instructions/jorgealves/agent_skills/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80ร—15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80ร—15 button for agent_skills AGENTS.md

Your own site ยท 80ร—15
<a href="https://agentmods.dev/instructions/jorgealves/agent_skills/agents-md"><img src="https://agentmods.dev/badge/instructions/jorgealves/agent_skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,009 This file is loaded in full into every session.
When invoked 2,009 The same file โ€” it is already loaded in full.
Security scan C 1 finding. A grade says what 26 rules found in the file โ€” 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 $0.02009 $0.02009
Opus 5.5 $0.00804 $0.00804
Sonnet 5.5 $0.00402 $0.00402
Haiku 4.5 $0.00201 $0.00201

Measured 9d ago against content hash 8bd314677df5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

agent_skills AGENTS.md scanned grade C with 1 finding against 26 rules in 11 categories โ€” prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency โ€” measured 9d 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.

Hidden instructionshighPrompt injection

Directives inside HTML comments, invisible characters or bidirectional overrides are read by the model and not by the person reviewing the file.

โ€‹ metadata field The optional metadata field: A map from string keys to string values Clients can use this to store additional properties not defined by the Agent Skills spec We recommend making your key names reasonably
AGENTS.md ยท 281 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, 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. 9d ago Changed ยท +8 lines ยท +167 tokens per session 8bd314677df5
  2. 2mo ago First seen ยท 273 lines ยท 1,842 tokens per session scan C b5256affb836

Subscribe to this mod's changes

agent_skills AGENTS.md is an instructions file published in the GitHub repository jorgealves/agent_skills (2 stars, last pushed 10d ago), licensed GPL-3.0. It adds 2,009 tokens to every session, about $0.0080 per session on Opus 5.5. A static security scan graded it C with 1 finding (hidden instructions). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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.mdjorgealves/agent_skillsInstructions file210d agoGPL-3.0C2,009Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA9,719GitHub Copilot
next.js AGENTS.mdvercel/next.jsInstructions file143kyesterdayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149ktodayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195ktodayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file275k2d agoMITA4,313Codex, OpenCode