cmux AGENTS.md

cmux AGENTS.md is an instructions file for Codex, OpenCode from manaflow-ai/cmux. It costs 4 tokens per session, scanned A, original, no licence file.

Project instructions for cmux, an open-source macOS terminal based on Ghostty, with vertical tabs and notifications for AI coding agents. They describe its purpose as helping with multitasking, organization, and programmable workflows.

In plain words
What is it for?
Use them when working on cmux's macOS terminal, tab organization, notifications, or programmable features.
Why use it?
They explain the project's context so an agent can make changes that fit the terminal and its coding-agent use case.

Instructions file for CodexOpenCode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/manaflow-ai/cmux/agents-md
Clone the repo
git clone --depth 1 https://github.com/manaflow-ai/cmux

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 cmux AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/manaflow-ai/cmux/agents-md.svg)](https://agentmods.dev/instructions/manaflow-ai/cmux/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/manaflow-ai/cmux/agents-md"><img src="https://agentmods.dev/badge/instructions/manaflow-ai/cmux/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 4 This file is loaded in full into every session.
When invoked 4 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00004 $0.00004
Opus 5 $0.00002 $0.00002
Sonnet 5 $0.00001 $0.00001
Haiku 4.5 $0.00000 $0.00000

Measured 5d ago against content hash 6ebdb617a810, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cmux 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 5d 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 · 1 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.

  1. 5d ago First seen · 1 lines · 4 tokens per session scan A 6ebdb617a810

Subscribe to this mod's changes

cmux AGENTS.md is an instructions file published in the GitHub repository manaflow-ai/cmux (26,790 stars, last pushed today), with no licence file. It adds 4 tokens to every session, about $0.0000 per session on Opus 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.