curl --request POST \
  --url https://api.cartesia.ai/agents/documents/bulk \
  --header 'Authorization: Bearer <token>' \
  --header 'Cartesia-Version: <cartesia-version>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "documents": [
    {
      "folder_id": "<string>",
      "content": "<string>",
      "name": "<string>",
      "metadata": {}
    }
  ]
}
'

[
  {
    "id": "<string>",
    "name": "<string>",
    "content": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "metadata": {}
  }
]