{
  "sandboxes": [
    {
      "name": "m101-demo",
      "id": "<uuid>",
      "agent": "shell",
      "status": "running",
      "last_used_at": "<ts>",
      "workspaces": [
        "$CAPTURE/fixtures/repo"
      ],
      "created_at": "<ts>"
    }
  ]
}