What is repo-brain AGENTS.md?

Project-specific instructions for agents working on the BeardedChop/repo-brain code repository. They describe the repository, its technology stack, and the rules agents should follow.

Use them when working in BeardedChop/repo-brain to load its overview, technology choices, agent instructions, and expected do's and don'ts.

They give an agent the local context needed to make changes that fit the repository. Without them, an agent may misunderstand the project structure or ignore required practices.

How BeardedChop/repo-brain configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to BeardedChop/repo-brain. 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/BeardedChop/repo-brain/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/BeardedChop/repo-brain

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/beardedchop/repo-brain/agents-md/github.svg)](https://agentmods.dev/instructions/beardedchop/repo-brain/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/beardedchop/repo-brain/agents-md"><img src="https://agentmods.dev/badge/instructions/beardedchop/repo-brain/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/beardedchop/repo-brain/agents-md"><img src="https://agentmods.dev/badge/instructions/beardedchop/repo-brain/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 337 This file is loaded in full into every session.

When invoked 337 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.

Model	Per session	Once invoked
Fable 5.1	$0.00337	$0.00337
Opus 5.5	$0.00135	$0.00135
Sonnet 5.5	$0.00067	$0.00067
Haiku 4.5	$0.00034	$0.00034

Measured 2mo ago against content hash bf30f101cbe8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

repo-brain 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 · 81 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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.

2mo ago First seen · 81 lines · 337 tokens per session scan A bf30f101cbe8

Subscribe to this mod's changes

repo-brain AGENTS.md is an instructions file published in the GitHub repository BeardedChop/repo-brain (2 stars, last pushed 2mo ago), with no licence file. It adds 337 tokens to every session, about $0.0013 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.

repo-brain AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
repo-brain AGENTS.mdBeardedChop/repo-brain	Instructions file	2	2mo ago	none	A	337	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

repo-brain: Instructions file for Codex