curl -s -X POST \ "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash-image-preview:generateContent" \ -H "x-goog-api-key: $GEMINI_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "contents": [{ "parts": [ {"text": "Create a picture of a nano banana dish in a fancy restaurant with a Gemini theme"} ] }] }' \ | grep -o '"data": "[^"]*"' \ | cut -d'"' -f4 \ | base64 --decode > gemini-native-image.png