Model Context Protocol server for Firefox DevTools - enables AI assistants to inspect and control Firefox browser through the Remote Debugging Protocol
Skill Claude CodeCodex
This skill should be used when the user asks about browser automation, testing web pages, extracting content, filling forms, taking screenshots, or monitoring console/network activity. Activates for E2E testing, form automation, browsing tasks, or debugging web applications.
Skill Claude CodeCodex
Show console errors and failed network requests.
Skill Claude CodeCodex
Navigate Firefox to a URL and take a DOM snapshot for interaction.
Skill Claude CodeCodex
Take a screenshot of a URL or the current page.
Skill Claude CodeCodex
Find and fix why a website is slow by capturing and analyzing a Firefox performance profile, or by analyzing a profile the user already has (a saved file or a profiler.firefox.com share link). Use for slow page loads, janky scrolling or animation, slow interactions or a slow STR, long tasks, layout thrashing, or heavy…
Skill Claude CodeCodex
Diagnose Firefox DevTools MCP setup issues. Activate when the firefox-devtools-mcp plugin fails to connect, its tools are not available, or the user reports Firefox DevTools not working in Cowork.