curl https://gogogotoken.ai/v1/models \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "object": "list",
  "data": [
    { "id": "gpt-4o", "object": "model", "owned_by": "openai" },
    { "id": "claude-sonnet-4-20250514", "object": "model", "owned_by": "anthropic" },
    { "id": "gemini-2.5-pro", "object": "model", "owned_by": "google" },
    { "id": "gpt-image-1", "object": "model", "owned_by": "openai" }
  ]
}

{
  "error": {
    "message": "Invalid API key",
    "type": "invalid_request_error",
    "code": "invalid_api_key"
  }
}