by freema · MCP Server · ★ 72
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is firefox-devtools-mcp safe to install? View the security audit →
Firefox DevTools MCP Model Context Protocol server for automating Firefox via WebDriver BiDi (through Selenium WebDriver). Works with Claude Code, Claude Desktop, Cursor, Cline and other MCP clients. Repository: https://github.com/mozilla/firefox-devtools-mcp Note: This MCP server requires a local Firefox browser installation and cannot run on cloud hosting services like glama.ai. Use to run locally, or use Docker with the provided Dockerfile. Security Browser MCP servers carry inherent risks. A few key practices: Use a dedicated Firefox profile. Never run the server against your regular profile — the agent has access to whate
claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest
claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest -- --headless --viewport 1280x720Taken from the project's README on GitHub. Check the security audit before running it.
No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
| Stars | 72 |
| Forks | 18 |
| Language | TypeScript |
| Category | MCP Server |
| License | MIT |
| Quality Score | 73.98910864685/100 |
| Open Issues | 1 |
| Last Updated | 2026-03-17 |
| Created | 2025-10-08 |
| Platforms | browser, claude-code, mcp, node |
| Est. Tokens | ~45k |
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firefox-devtools-mcp is Model Context Protocol server for Firefox DevTools - enables AI assistants to inspect and control Firefox browser through the Remote Debugging Protocol. It is categorized as a MCP Server with 72 GitHub stars.
firefox-devtools-mcp is primarily written in TypeScript. It covers topics such as claude-code, firefox, mcp.
The README on GitHub (github.com/freema/firefox-devtools-mcp) gives: claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest , then claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest -- --headless --viewport 1280x720. Usage details are in the same README.
firefox-devtools-mcp is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to firefox-devtools-mcp on Agent Skills Hub include chrome-devtools-mcp, mcp-claude-code, claude-historian-mcp. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. 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: