.agents/plugins/marketplace.json

{
    "name": "sonar",
    "plugins": [
        {
            "name": "sonarqube",
            "source": {
                "source": "local",
                "path": "./"
            },
            "policy": {
                "installation": "AVAILABLE",
                "authentication": "ON_INSTALL"
            },
            "category": "Code Review"
        }
    ]
}