curl --request POST \
  --url https://app-api.starkai.io/v1/api/sources/file-upload \
  --header 'Content-Type: multipart/form-data' \
  --header 'X-Api-Key: <api-key>' \
  --form file=@example-file

{
  "status": true,
  "message": "File uploaded successfully",
  "data": {
    "source_id": "file_123456789"
  }
}