curl --request POST \
  --url https://api.agentset.ai/v1/namespace/{namespaceId}/uploads/batch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "files": [
    {
      "fileName": "document.pdf",
      "contentType": "application/pdf",
      "fileSize": 1024
    }
  ]
}'

{
  "success": true,
  "data": [
    {
      "url": "<string>",
      "key": "<string>"
    }
  ]
}