file-assistant/agent.json

{
    "model": "openai/gpt-oss-20b",
    "endpointUrl": "http://127.0.0.1:1234",
    "servers": [
        {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@wonderwhy-er/desktop-commander"
            ]
        }
    ]
}