agent-playbooks: Instructions file for Codex

AGENTS.md

agent-playbooks AGENTS.md is an instructions file for Codex, OpenCode from athallarizky/agent-playbooks. It costs 1,435 tokens per session, scanned A, original, no licence file.

A set of AGENTS.md instructions for the agent-playbooks repository, a code project containing reusable guides for coding agents.

In plain words
What is it for?
Use it when contributing to or using playbooks in the athallarizky/agent-playbooks repository.
Why use it?
It explains the repository’s purpose, playbook format, and rules so an agent can work there consistently.

Instructions file for CodexOpenCode

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

This is athallarizky/agent-playbooks's own configuration. It tells Codex and OpenCode how to work on agent-playbooks 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-playbooks configures →

Reuse

Borrowing it

Nothing to install: this file belongs to athallarizky/agent-playbooks. 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/athallarizky/agent-playbooks/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/athallarizky/agent-playbooks

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-playbooks AGENTS.md

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

Your own site · 80×15
<a href="https://agentmods.dev/instructions/athallarizky/agent-playbooks/agents-md"><img src="https://agentmods.dev/badge/instructions/athallarizky/agent-playbooks/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,435 This file is loaded in full into every session.
When invoked 1,435 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 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 $0.01435 $0.01435
Opus 5.5 $0.00574 $0.00574
Sonnet 5.5 $0.00287 $0.00287
Haiku 4.5 $0.00144 $0.00144

Measured 29d ago against content hash deb04fa3ba95, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-playbooks 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 29d 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 · 119 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 29d ago Changed · +2 lines · +27 tokens per session deb04fa3ba95
  2. 1mo ago Changed · +34 lines · +421 tokens per session 0408fed7ba9e
  3. 1mo ago Changed · +1 lines · +43 tokens per session 0d2fd4f6c355
  4. 1mo ago Changed · +6 lines · +55 tokens per session 1f3630dc2a7c
  5. 1mo ago Changed · +2 lines · +23 tokens per session 0939c87cd279
  6. 1mo ago First seen · 74 lines · 866 tokens per session scan A 2c3d8c54a038

Subscribe to this mod's changes

agent-playbooks AGENTS.md is an instructions file published in the GitHub repository athallarizky/agent-playbooks (3 stars, last pushed 2d ago), with no licence file. It adds 1,435 tokens to every session, about $0.0057 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.

Related

Other instructions, from other repositories