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Firefox Devtools

@freema · github.com/freema/firefox-devtools-mcp

Firefox browser automation via WebDriver BiDi for testing, scraping, and browser control. Supports snapshot/UID-based interactions, network monitoring, console capture, and screenshots.

ClaimedWeb & APIsstdiolocal auth
GitHub

Install one command

terminal
$ npx @modelcontextprotocol/inspector npx @mozilla/firefox-devtools-mcp@latest --start-url https://example.com --headless

Or add it with the Claude CLI: claude mcp add freema-firefox-devtools-mcp

Tools exposed 0 tool

Configuration claude_desktop_config.json

claude_desktop_config.json
{
  "mcpServers": {
    "freema-firefox-devtools-mcp": {
      "command": "npx",
      "args": ["@modelcontextprotocol/inspector", "npx", "@mozilla/firefox-devtools-mcp@latest", "--start-url", "https://example.com", "--headless"],
      "env": {
        "START_URL": "<your-start-url>",
        "FIREFOX_HEADLESS": "<your-firefox-headless>"
      }
    }
  }
}

Paste under mcpServers in your config, then restart Claude Desktop. For Claude Code, reference this server in your project's CLAUDE.md.

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