{
  "name": "download.addBatch \u2014 three URLs, one bad, added together",
  "description": "Partial success is normal: the two good items become tasks and the third is reported per-item rather than failing the batch.",
  "request": {
    "jsonrpc": "2.0",
    "id": 12,
    "method": "download.addBatch",
    "params": {
      "items": [
        {
          "url": "https://example.org/a.zip"
        },
        {
          "url": "https://example.org/b.zip"
        },
        {
          "url": "https://example.org/c.zip",
          "saveDir": "/etc"
        }
      ],
      "defaults": {
        "url": "https://example.org/",
        "categoryId": "programs",
        "startMode": "queue",
        "queueId": "main"
      }
    }
  },
  "response": {
    "jsonrpc": "2.0",
    "id": 12,
    "result": {
      "taskIds": [
        "$uuid",
        "$uuid"
      ],
      "failed": [
        {
          "index": 2,
          "code": -32011,
          "message": "destination is outside the allowed roots"
        }
      ]
    }
  },
  "assertions": [
    "defaults fill only fields an item left unset; the defaults' own url is ignored",
    "one rejected item never rolls back the accepted ones",
    "failed[].index refers to params.items, so the caller can map it back to its own list"
  ]
}