browser-harness: Let Claude Code, Codex or Cursor use your real Chrome, logged in as you

by browser-use · MCP Server · ★ 18.9k

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Security audit verdict: SAFE · quality 65/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

ai-agentbrowser-agentbrowser-automationbrowser-usebrowser-use-boxbrowser-use-cloudcdpchromechrome-devtools-protocolclaude-code

Quick Facts

Stars18,853
Forks1,860
LanguagePython
CategoryMCP Server
LicenseMIT
Quality Score65/100
Open Issues438
Last Updated2026-11-04
Created2026-04-17
Platformsbrowser, claude-code, codex, mcp, python
Est. Tokens~14k

About browser-harness

Browser Harness ♞ Browser Harness lets Claude Code, Codex or Cursor use your real Chrome browser: open pages, click, type, read and download, logged in as you. Paste one prompt into your coding agent to set it up. It talks to Chrome over the DevTools Protocol (CDP), and the agent writes any missing helper as it works, so the harness gets better with each task. Open source, MIT licensed.

Compatible Skills

These tools work well together with browser-harness for enhanced workflows:

  • magentic-ui — semantic(0.40)+complementary+same_lang+similar_pop+shared_platform (64%)
  • notte — semantic(0.33)+complementary+same_lang+similar_pop+shared_platform (62%)
  • stagehand — semantic(0.42)+complementary+rare_topics+similar_pop+shared_platform (59%)
  • BrowserSkill — semantic(0.54)+complementary+similar_pop+shared_platform (59%)

browser-harness alternative? Top 6 similar tools

Looking for a browser-harness alternative? If you're comparing browser-harness with other mcp server tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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