curl -X POST "https://api.tokenlab.sh/v1beta/models/gemini-2.5-pro:streamGenerateContent?key=sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "parts": [{"text": "Tell me a story"}]
      }
    ]
  }'

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {"text": "Once upon a time"}
        ]
      }
    }
  ]
}