| FMRS | 66 / 100 · C | 78 / 100 · B | 76 / 100 · B |
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| Reliability | 10 / 20 | 13 / 20 | 13 / 20 |
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| Security and permissions | 14 / 20 | 12 / 20 | 12 / 20 |
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| Maintenance | 15 / 20 | 18 / 20 | 17 / 20 |
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| Documentation | 15 / 20 | 18 / 20 | 17 / 20 |
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| Setup experience | 12 / 20 | 17 / 20 | 17 / 20 |
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| Best for | - Developers who want AI clients to directly control the browser
- Scenarios requiring DOM-level understanding and low-latency automation (50-200 ms)
- Multi-client support (Claude Code, Cursor, VS Code, etc.)
- Internal tools or automation scripts needing browser interaction
| - Scenarios where an AI assistant needs to actually drive a browser to complete a task
- Web automation testing and end-to-end verification
| - Frontend developers who want AI-assisted web debugging and performance analysis
- Scenarios that need browser automation and performance diagnostics in the same tool
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| Not for | - Headless browser or server-side monitoring
- Bypassing website restrictions or unsupervised automation
- Automation on sensitive pages without human supervision
- Complex scenarios that require visual understanding (e.g., screenshots)
| - Simple static-text scraping (a lightweight scraper is a better fit)
- Environments sensitive to browser resource usage that can't run a full browser engine
| - Cases that only need to scrape page text without performance analysis or complex interaction (a lighter scraping tool is a better fit)
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| Required permissions | - Requires installing the Chrome extension, which requests permissions for active tab, debugger, storage, etc.
- MCP server needs to connect to the extension via WebSocket (default ws://localhost:7225)
- Optional Streamable HTTP mode requires allowing connections to http://127.0.0.1:7226/mcp
- Uploading files requires providing absolute local paths
| - Requires installing and running a browser engine (Chromium/Firefox/WebKit) locally or on a server
- browser_navigate can visit any URL; browser_evaluate can run arbitrary JavaScript in the page context
| - Requires a local Chrome browser instance to run
- navigate_page can visit any URL; type_text/fill_form and similar tools can enter arbitrary content into the page
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| Risks and side effects | - Browser automation can be unpredictable on complex or sensitive sites; supervision is required
- Credentials and payment info are stored in a vault but require user unlock flows
- API keys are encrypted in Chrome storage, but clients may send page context to model providers
- MCP server is a local process, posing local security risks
- Capability catalog allows most non-denied origins but is gated by multiple checks
| - browser_evaluate executing arbitrary scripts carries risk if a malicious page is visited — restrict to trusted sites or an isolated environment
- Long-running browser instances consume significant memory and CPU
| - Browser automation tools can access and manipulate the content of open pages — use only in a trusted development/test environment
- performance_start_trace and similar tracing tools continuously record browser activity — avoid leaving them running on pages containing sensitive information
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| Supported clients | Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Codex | Claude Desktop, Claude Code, VS Code, Cursor, Windsurf, JetBrains, Zed, Cline, Amp, Kiro, LM Studio, Antigravity, Goose | Claude Code, VS Code, Cursor, Windsurf, JetBrains, Cline, Amp, Kiro, Antigravity |
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| Tools | 30 | 10 | 22 |
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