Cmux Browser

Cmux Browser is an Automation skill for Claude Code, published by manaflow-ai in cmux.

26K stars2.2K forkson manaflow-ai/cmuxAdded 2026/08/14Repository updated 2026/08/14

ampclaude-codeclicodexcoding-agentsgeminighosttymacosmultiplexermultitaskingopencodeorganizationparallel-agentsprogrammabilityterminalterminal-multiplexertmuxworkspace-manager

Install in seconds

Install Cmux Browser

Copy Cmux Browser into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/manaflow-ai/cmux/tree/main/skills/cmux-browser ~/.claude/skills/cmux-browser

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/manaflow-ai/cmux.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/cmux-browser/SKILL.md in manaflow-ai/cmux
Installs to: ~/.claude/skills/cmux-browser
Collection: One of 20 skills cataloged from this repository
Category: Automation — 1523 skills

What Cmux Browser does

Cmux Browser opens sites, interacts with pages, waits for state changes, and extracts data from cmux browser surfaces. Use it when you need end-user browser automation through the cmux command-line interface.

Cmux Browser is cataloged under Automation on DirSkills. Cmux Browser comes from a repository tagged amp, claude-code, cli, codex and coding-agents.

Documentation

README

Excerpt

Browser Automation with cmux

Core workflow

Open or target a browser surface, verify navigation with get url, snapshot for fresh element refs, act on refs, wait for the state change, re-snapshot.

cmux --json browser open https://example.com     # returns a surface ref, e.g. surface:7
cmux browser surface:7 get url
cmux browser surface:7 wait --load-state complete --timeout-ms 15000
cmux browser surface:7 snapshot --interactive
cmux browser surface:7 fill e1 "hello"
cmux --json browser surface:7 click e2 --snapshot-after
cmux browser surface:7 snapshot --interactive

If get url is empty or about:blank, navigate first instead of waiting on load state. Re-snapshot after navigation, modal open/close, or major DOM changes; refs go stale.

Surface targeting

This is the opening of the README. Read the full README on GitHub.

Frequently asked about Cmux Browser

What else does manaflow-ai publish alongside Cmux Browser?
Cmux Browser is one of 20 skills that DirSkills catalogs from manaflow-ai/cmux, the repository it ships in. Its siblings there include CMUX Architecture, CMUX Billing and CMUX Shared Behavior. Each one is a separate skill with its own page in this directory, installs the same way Cmux Browser does, and is maintained by manaflow-ai in that same repository. The rest of the collection is listed on the manaflow-ai/cmux page.
How does Cmux Browser compare to other Automation skills?
Cmux Browser ranks #107 by stars among the 1523 Automation skills in this catalog. The most-starred ones next to it are Autonomous Loops, Autonomous Agent Harness and Automation Audit Ops. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Cmux Browser against them. Open each page to compare what they document and how they install.