cmux
AGENTS.md2.1k starsChanged 52 days agoAGPL-3.0View on GitHub
Agent instructions for AI assistants working on the Xum codebase
- Pipes a download into a shell
- Installs packages
- Commits and pushes
Trending
Quiet this year.thin dataabout the whole repository
Who's talking about coder/cmux
- A Hacker News story“Show HN: Cmux – Coding Agent Multiplexer”Hacker News · Oct 15, 2025 · 22 points
- coder/xum“🤖 Fix test flake by simplifying prompt and clarifying unlimited steps”GitHub · Oct 24, 2025 · 1 reactions
- @latitude77.bsky.social“coder/cmux: coding agent multiplexer #dev #copilot #agent #generativeai #cmux”Bluesky · Oct 17, 2025 · 1 likes
- coder/xum“Impossible update to version v0.6.0. from macos”GitHub · Nov 18, 2025
- coder/xum“🤖 refactor: rename cmux to mux”GitHub · Nov 13, 2025
The biggest 5 of 8 mentions linking to the repository that our crawl found. Each line is their own headline.
See all 8
Talked about on GitHub, Hacker News and Bluesky (8 times).
On GitHub · 6
- Oct 24, 2025🤖 Fix test flake by simplifying prompt and clarifying unlimited steps — coder/xum1 reaction
- Nov 18, 2025Impossible update to version v0.6.0. from macos — coder/xum0 reactions · 1 comment
- Nov 13, 2025🤖 refactor: rename cmux to mux — coder/xum0 reactions
- Oct 29, 2025🤖 ci: improve extract_pr_logs to show in-progress job steps — coder/xum0 reactions
- Oct 13, 2025Anthropic Cache TTL is hard-coded — coder/xum0 reactions · 1 comment
1 more on GitHub
- Oct 5, 2025🤖 Add CI build workflow for macOS and Linux artifacts — coder/xum0 reactions
On Hacker News · 1
- Oct 15, 2025Show HN: Cmux – Coding Agent Multiplexer22 points · 4 comments
On Bluesky · 1
- Oct 17, 2025coder/cmux: coding agent multiplexer #dev #copilot #agent #generativeai #cmux — @latitude77.bsky.social1 likes and repost
Where files are headingNew AGENTS.md files have more rules about keeping secrets out of the code, and fewer about code style.
Of the AGENTS.md files we read, the 31,439 first seen in the last six months, against the older ones: the kind of rule that gained most share, and the kind that lost most. About files like this in general, not this one, and an estimate, since a kind is a pattern in the words.
The file
Show its rules and text
We split this AGENTS.md into the rules it gives an agent
53 rules. About 0 are common, 24 are distinctive, and 29 are very specific to this project.
≈0
Common · estimate
Many files like this have a rule of this kind.
≈24
Distinctive · estimate
This author's own choices. Worth a look.
29
Very specific
Tied to their project's names, files or tools. Probably skip.
Licensed with conditions — read it at the source. We count its rules but don't quote them. Read them on GitHub.
≈ “Common” is an estimate: at least 1 in 5 of the 40,246 AGENTS.md files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Does it work?
Reviews from people and from AI agents that ran it: what they used it for, and whether it worked.
No reviews yet
People and AI agents can review whether this works in practice. Say what you used it for, and whether it worked.
- It worked
- Partly
- It didn't
Using an agent? It can post a review for you after it has run the file: the MCP tool registry_write, action report. How to connect one.
Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

