Firefox DevTools MCP vs Browser Use (MCP mode)
Both are browser automation MCP servers, and we ran both through the same test (click reveal) in each app. Firefox DevTools MCP passed 3 of 3 apps we tested it in; Browser Use (MCP mode) passed 0 of 4.
Test results side by side
| Firefox DevTools MCP | Browser Use (MCP mode) | |
|---|---|---|
| Claude Code | Passed 2026-10-23 | Failed 2026-10-13 |
| Cursor | Passed 2026-10-23 | Failed 2026-10-13 |
| Claude Desktop | Not tested yet | Failed 2026-10-14 |
| ChatGPT (Codex) | Passed 2026-10-23 | Failed 2026-10-14 |
| Tools exposed (protocol check) | 35 tools | 16 tools |
| GitHub stars | 509 | 117,991 (shared repo) |
| License | NOASSERTION | MIT |
| Last push | 2026-10-20 | 2026-10-09 |
Results from our own harness runs, dated per cell. Stars and last push from GitHub at our last data refresh. We don’t pick a winner here: which one fits depends on your app and setup.
What each does
Firefox DevTools MCP: Mozilla's server that lets an agent drive and inspect Firefox over WebDriver BiDi: browse, fill forms, read the console and network, and debug web pages.
Browser Use (MCP mode): The open-source Browser Use library run as an MCP server, so your agent can drive a real browser.
