browser-use

Browser Harness JS — Productivity skill for Claude Code

Productivity community

Self-healing browser harness that enables LLMs to complete any task.

How to install Browser Harness JS

This entry records only its repository, not the path inside it, so there is no exact command to give. Open browser-use/browser-harness-js and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Browser Harness JS does

Self-healing browser harness that enables LLMs to complete any task.

Alternatives in Productivity

Workflow Orchestration — A Claude Code skill for disciplined task execution with planning, verification, and self-improvement loops 113 ★
Self Regulated Learning — Self-regulated learning strategies 67 ★
Lemoncrow — A Complete faster runtime for coding agents 62 ★

README

Browser Harness JS ♞

The thinnest possible bridge from the LLM to Chrome. **No harness, no recipes, no rails** — just every CDP method as a typed JS call.

One persistent WebSocket, 56 domains, 652 typed wrappers, zero wrapping of what Chrome already does.

  ● agent: wants to click a button
  │
  ● no click() helper, no upload_file(), no goto()
  │
  ● agent writes the CDP call itself        await session.Input.dispatchMouseEvent({...})
  │                                          await session.DOM.setFileInputFiles({...})
  ✓ done — same pattern for all 652 methods

**The protocol is the API.** If Chrome can do it, you can call it.

Installation

npx skills add https://github.com/browser-use/browser-harness-js --skill cdp

Or paste this into your agent — it'll install the skill, put the CLI on your PATH, and run a first task:

Run `npx skills add https://github.com/browser-use/browser-harness-js --skill cdp`, then
symlink `browser-harness-js` into a directory on my PATH, then use the cdp skill to drive
my browser: look at all the tabs I have open, group them by topic, and screenshot the most
interesting one.

(The CLI auto-installs [`bun`](https://bun.sh) on first run if it's missing. Set `BROWSER_HARNESS_SKIP_BUN_INSTALL=1` to opt out.)

If Chrome asks you to tick a remote-debugging checkbox, do it — that's how the agent attaches:

See [interaction-skills/](interaction-skills/) for recipes on the mechanics that are not obvious from the CDP method list alone.

Files

SKILL.md — day-to-day usage; how to connect, pick a tab, call methods, persist state
sdk/browser-harness-js — tiny CLI that auto-spawns the server and forwards snippets
sdk/repl.ts — Bun HTTP server holding one persistent `Sessio