Firefox DevTools MCP vs Peekaboo

A side-by-side comparison of two Browser Automation servers — tools, transport, auth, maintenance, and copy-paste config for each.

	Firefox DevTools MCP Automate and inspect Firefox via WebDriver BiDi (Selenium) from any MCP client. Unverified stdio (local) No auth TypeScript	Peekaboo macOS screen capture, AI visual analysis, and full GUI automation for AI agents. Unverified stdio (local) API key Swift
Category	Browser Automation	Browser Automation
Language	TypeScript	Swift
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	228	4.8k
Last commit	1 month ago	1 month ago
Verified
Actively maintained
Install	`claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest`	`npx -y @steipete/peekaboo`
Repo	Open	Open

Verdict

Pick Firefox DevTools MCP if you want the official, vendor-maintained server, and you want zero-setup with no API key.

Pick Peekaboo if you prefer the more popular, battle-tested option.

Add Firefox DevTools MCP

Install / run

claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "firefox-devtools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mozilla/firefox-devtools-mcp@latest",
        "--headless",
        "--viewport",
        "1280x720"
      ],
      "env": {
        "START_URL": "about:blank"
      }
    }
  }
}

Add Peekaboo

Install / run

npx -y @steipete/peekaboo

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "peekaboo": {
      "command": "npx",
      "args": [
        "-y",
        "@steipete/peekaboo"
      ],
      "env": {
        "PEEKABOO_AI_PROVIDERS": "openai/gpt-5.5,anthropic/claude-opus-4-8"
      }
    }
  }
}

FAQ

Firefox DevTools MCP or Peekaboo — which is better?

Pick Firefox DevTools MCP if you want the official, vendor-maintained server, and you want zero-setup with no API key. Pick Peekaboo if you prefer the more popular, battle-tested option.

Can I use both Firefox DevTools MCP and Peekaboo?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do Firefox DevTools MCP and Peekaboo work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View Firefox DevTools MCP →View Peekaboo →More comparisons →