curl --request GET \
  --url https://api.musicgpt.com/api/public/v1/prompt_to_lyrics \
  --header 'Authorization: <api-key>'

{
  "success": true,
  "task_id": "task-lyrics-2345",
  "message": "Lyrics generated successfully",
  "lyrics": "Under the silver moonlight we sway...\n...\n",
  "credit_estimate": 10
}