curl --request GET \
  --url https://api.voxnexus.ai/v1/models \
  --header 'X-Api-Key: <api-key>'

{
  "models": [
    {
      "model_id": "vn-tts-ultra",
      "name": "VoxNexus TTS Ultra",
      "capability_type": "tts",
      "description": "High quality text-to-speech model"
    }
  ]
}