gemini-2.5-flash-image-hd (image edit)

curl -X POST "https://gptproto.com/v1beta/models/gemini-2.5-flash-image-hd:generateContent" \
  -H "Authorization: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "contents": [
    {
      "parts": [
        {
          "text": "Create a picture of my cat eating a nano-banana in a fancy restaurant under the Gemini constellation"
        },
        {
          "inline_data": {
            "mime_type": "image/jpeg",
            "data": "base64"
          }
        }
      ]
    }
  ],
  "generationConfig": {
    "responseModalities": [
      "TEXT",
      "IMAGE"
    ]
  }
}'

{
  "error": {
    "message": "Invalid signature",
    "type": "401"
  }
}