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Connect an LLM directly to your real browser through one editable CDP websocket. The agent writes missing helpers as it works, so the harness improves with every task.

Paste into Claude Code or Codex:

The agent will open chrome://inspect/#remote-debugging. On first setup, tick the checkbox so the agent can connect to your browser:

• install.md — connects the agent to your browser.
• SKILL.md — teaches it the browser workflow.
• src/browser_harness/ — stays protected while the agent writes reusable helpers in its local workspace.

Use your local browser for logged-in, personal work. When you want many browsers in parallel — with live previews, proxies, stealth, CAPTCHA solving, and more — scale with /new-api-key.

browser-harness-mcp exposes the browser control helpers as MCP tools over stdio, so any MCP client (Claude Code, Devin, Cursor, etc.) can drive the browser without writing a second CDP layer. See docs/MCP.md for setup and client configuration.

Bug fixes, documentation improvements, and agent-generated domain skills are welcome. See CONTRIBUTING.md.