An MCP server for browser automation with persistent Playwright sessions. Originally based on SawyerHood/dev-browser.

Unlike standard Playwright MCP servers that create fresh browser instances, dev-browser maintains persistent browser state across tool calls. Pages stay alive, sessions persist, and you can iteratively explore and interact without starting over.

Add to your opencode.json or ~/.config/opencode/config.json:

{
  "mcp": {
    "dev-browser": {
      "type": "local",
      "command": ["npx", "-y", "open-dev-browser"],
      "enabled": true
    }
  }
}

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "dev-browser": {
      "command": "npx",
      "args": ["-y", "open-dev-browser"]
    }
  }
}

• DEV_BROWSER_PORT - HTTP API port (default: 9222)
• DEV_BROWSER_HEADLESS - Run headless (default: false)
• DEV_BROWSER_PROFILE_DIR - Directory for persistent browser profile

Ask your AI to interact with your browser:

• "Navigate to localhost:3000 and test the login flow"
• "Take a snapshot of the page and click the submit button"
• "Fill out the contact form and submit it"

Based on dev-browser by Sawyer Hood.

MIT