agentleFS
nc9nc9/skills/agent-browser/SKILL.md

agent-browser

Skill4 starsChanged 54 days agoMITView on GitHub

Control a browser from the CLI with agent-browser - attach to an existing Chrome over CDP or launch one, snapshot the accessibility tree, click/fill by element ref, screenshot, read console and network. Use for any browser interaction, web app testing, or page debugging.

188 other projects use a version of this.

Adopted by

Most recently taken up by

Used with

Projects with it also use time-skill, dep-refs and 10 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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The file

We split this skill into the rules it gives an agent

1 rule. 0 are common, 1 is distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 172 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Prefer attaching over launching a fresh browser when the user has a session open.

    line 21

“Common” is measured: kept by at least 6 in 10 of the 172 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

agent-browser

Thin pointer to the agent-browser CLI. The usage guide ships with the CLI and always matches the installed version, so load it before running commands:

agent-browser skills get core           # workflows, patterns, troubleshooting
agent-browser skills get core --full    # plus full command reference
agent-browser skills list               # specialised guides (electron, slack, dogfood, ...)

Install or update: bun add -g agent-browser@latest (check with agent-browser doctor).

Attaching to an existing Chrome

Prefer attaching over launching a fresh browser when the user has a session open.

agent-browser --cdp 9222 tab list       # Chrome started with --remote-debugging-port=9222
agent-browser --auto-connect tab list   # discover a running Chrome and reuse its auth state
  • Chrome 136+ ignores --remote-debugging-port on the default profile. It only listens when started with a non-default --user-data-dir, or when the toggle at chrome://inspect/#remote-debugging is on. If attach fails, check what owns the port: lsof -nP -iTCP:9222 -sTCP:LISTEN.
  • Work in a new tab (tab new <url>) unless asked to act on an open one, and never close a browser you attached to.

Core loop

agent-browser --cdp 9222 snapshot -i -c   # interactive elements only, compact; returns @eN refs
agent-browser --cdp 9222 click @e3
agent-browser --cdp 9222 fill @e5 "text"

Refs go stale after navigation or DOM changes: re-snapshot before the next action. Use --session <name> to keep parallel tasks isolated, and --json when parsing output.

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Your trail

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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.