What is codexhub AGENTS.md?

Contributor instructions for CodexHub, a project that catalogs coding-agent add-ons. They require catalog data to be evidence-backed and builds to be checked offline.

Updating catalog data, preserving reproducibility, checking tests and offline builds, and formatting text and links correctly.

They set rules for reliable catalog entries, safe handling of indexed projects, permitted links, and pre-pull-request checks.

How zpf2234/codexhub configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to zpf2234/codexhub. 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/zpf2234/codexhub/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/zpf2234/codexhub

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/zpf2234/codexhub/agents-md/github.svg)](https://agentmods.dev/instructions/zpf2234/codexhub/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/zpf2234/codexhub/agents-md"><img src="https://agentmods.dev/badge/instructions/zpf2234/codexhub/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/zpf2234/codexhub/agents-md"><img src="https://agentmods.dev/badge/instructions/zpf2234/codexhub/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 92 This file is loaded in full into every session.

When invoked 92 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.

Model	Per session	Once invoked
Fable 5.1	$0.00092	$0.00092
Opus 5.5	$0.00037	$0.00037
Sonnet 5.5	$0.00018	$0.00018
Haiku 4.5	$0.00009	$0.00009

Measured 2mo ago against content hash 37cdd06b5dfb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codexhub 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 · 10 lines

What it actually says

CodexHub contributor guide

Project expectations

Keep catalog data evidence-backed and reproducible.
Never clone, install, execute, or connect to an indexed project.
Run npm test and npm run build:offline before opening a pull request.
Treat stars and forks as popularity signals, never as quality evidence.
Render catalog text as text, not HTML, and allow only http/https links.

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 · 10 lines · 92 tokens per session scan A 37cdd06b5dfb

Subscribe to this mod's changes

codexhub AGENTS.md is an instructions file published in the GitHub repository zpf2234/codexhub (2 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 92 tokens to every session, about $0.0004 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.

agents-md codex codex-plugin codex-skills mcp

codexhub AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codexhub AGENTS.mdzpf2234/codexhub	Instructions file	2	2mo ago	Apache-2.0	A	92	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

codexhub: Instructions file for Codex