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io.github.extensiondev/mcp

Build, run, inspect, and publish browser extensions from any MCP client. 34 tools, 13 browsers.

Install

Add the config to your client settings. Replace values in <angle brackets> with your own.

claude_desktop_config.json

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@extension.dev/mcp@10.12.0"
      ]
    }
  }
}