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Firefox DevTools

Verified Integration
Author: @mozilla•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#Filesystem#AI#GitHub#Node.js#Automation

Client Configuration

— Connect Firefox DevTools to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "firefox-devtools-1": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-firefox-devtools-1"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Enables AI assistants to inspect, control, and automate the Firefox browser through the Remote Debugging Protocol, leveraging WebDriver BiDi.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Firefox DevTools

It provides extensive tools for page navigation, element interaction (click, fill, drag), content inspection, always-on capture of network requests and console events, detailed screenshot capture, script evaluation, and advanced browser control including WebExtension management and Firefox preference manipulation.

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