What is codex-computer-use-mcp AGENTS.md?

Repository instructions for a computer-control add-on on macOS. It explains how the add-on should expose OpenAI’s official signed computer-use methods and handle sessions, permissions, cancellation, and results.

Maintaining, reviewing, packaging, and testing the adapter that lets an agent use macOS applications through computer-control tools.

It gives developers clear rules for preserving the official computer-control behavior while adapting it to another tool interface.

How tmustier/codex-computer-use-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to tmustier/codex-computer-use-mcp. 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/tmustier/codex-computer-use-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/tmustier/codex-computer-use-mcp

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/tmustier/codex-computer-use-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/tmustier/codex-computer-use-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/tmustier/codex-computer-use-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/tmustier/codex-computer-use-mcp/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/tmustier/codex-computer-use-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/tmustier/codex-computer-use-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 348 This file is loaded in full into every session.

When invoked 348 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	$0.00348	$0.00348
Opus 5.5	$0.00139	$0.00139
Sonnet 5.5	$0.00070	$0.00070
Haiku 4.5	$0.00035	$0.00035

Measured 2d ago against content hash 8eb235c00fe5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codex-computer-use-mcp 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 2d 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 · 30 lines

What it actually says

Repository guidance

This package is a thin transport adapter to OpenAI's official signed macOS Computer Use runtime, cua_repl, the JavaScript tool ChatGPT's own threads use. The calling agent writes each script. Codex, ChatGPT and macOS remain authoritative for tool behaviour, app access and platform permissions.

Scope

Follow ChatGPT's current Computer Use route. Expose the official js and js_reset tools with the descriptions and parameters ChatGPT's installed runtime gives its own model, and run ChatGPT's cua_repl server entry unchanged apart from what the isolated transport needs. By the owner's choice, node_repl starts directly, without ChatGPT's per-turn browser access grant.
Do not add wrapper permission prompts, app or intent allowlists, action gates, risk classifiers, content inspection, alternate modes or model-driven planning.
Do not reintroduce app rewriting, same-app locking or focus telemetry.
Add adapter logic only for transport compatibility, zero-model-turn execution, retained official sessions, process lifecycle, packaging or a concrete user-visible bug.
Keep signature and Team ID verification, isolated temporary state, model-turn rejection and process cleanup.

Review

Review the exact production path and report material, reachable regressions. Do not block focused work on speculative hardening or malformed input that the official producer cannot emit.

A request to review does not authorize posting to GitHub. Show the user the exact proposed review, comment or issue text and get approval before posting it.

Verification

npm ci
npm run check
npm run check:pi
npm test
npm run build

Use benign applications for live acceptance.

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.

2d ago Changed · -2 lines · +10 tokens per session 8eb235c00fe5
24d ago Changed · +6 tokens per session 8f546392f415
2mo ago First seen · 32 lines · 332 tokens per session scan A cdcf869f6c9f

Subscribe to this mod's changes

codex-computer-use-mcp AGENTS.md is an instructions file published in the GitHub repository tmustier/codex-computer-use-mcp (46 stars, last pushed 2d ago), licensed MIT. It adds 348 tokens to every session, about $0.0014 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.

Building agents automation codex computer-use macos mcp pi-package

codex-computer-use-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
codex-computer-use-mcp AGENTS.mdtmustier/codex-computer-use-mcp	Instructions file	46	2d ago	MIT	A	348	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

codex-computer-use-mcp: Instructions file for Codex