browser-harness
Publisher not specified · Claude Code
What this plugin does
Open-source browser agent driven via CDP — direct browser control, 79K stars, YC W25.
browser-harness gives Claude Code direct, low-level control of a real Chrome browser via the Chrome DevTools Protocol. Coordinate-level clicks pass through iframes, shadow DOM, and cross-origin frames at the compositor level — no selector hunting, no Playwright wrappers. Connects to a long-running Browser Use Cloud or local browser session, so logins persist across runs.
Highlights:
- Screenshot-first workflow: capture → read pixel → click_at_xy → re-capture to verify
- Bulk HTTP fetch helper for static pages (no browser overhead)
- Raw CDP escape hatch for anything helpers don’t cover
- Interaction skills for dialogs, dropdowns, iframes, shadow DOM, file uploads, cross-origin frames
- Remote browsers via Browser Use Cloud — share a live URL with a human when login/CAPTCHA blocks the agent
Catalog observations
- Sources
- Community
- Works with
- Claude Code
- Reported installs
- Not provided
- First observed
- 2026-10-03 22:13 UTC
- Last observed
- 2026-10-07 12:00 UTC
Installation counts are reported by Claude Marketplace, not independently verified active users. Observation dates are not release dates. Pricing and account requirements must be checked with the publisher.
Install in Claude Code
Choose a source and review what the plugin adds before installing.
Community
/plugin marketplace add anthropics/claude-plugins-community
/plugin install browser-harness@claude-communitySource evidence
Descriptions and compatibility labels come from the linked sources. Where both sources match, the GitHub description is used because web summaries may be shortened. We have not independently tested the declared capabilities.