{
  "initiate_request": {
    "method": "POST",
    "url": "https://rest.alpha.fal.ai/storage/upload/initiate",
    "headers": {
      "Authorization": "Key $FAL_KEY",
      "Content-Type": "application/json"
    },
    "body": {
      "content_type": "image/png",
      "file_name": "reference.png"
    }
  },
  "initiate_response": {
    "upload_url": "https://v3-uploads.fal.media/files/abc/upload?signature=…",
    "file_url": "https://v3.fal.media/files/abc/reference.png"
  },
  "upload_request": {
    "method": "PUT",
    "url": "https://v3-uploads.fal.media/files/abc/upload?signature=…",
    "headers": {
      "Content-Type": "image/png"
    },
    "body_note": "Raw PNG bytes"
  },
  "use_in_model_call": {
    "url": "https://queue.fal.run/fal-ai/flux/dev/image-to-image",
    "body": {
      "prompt": "transform into anime style",
      "image_url": "https://v3.fal.media/files/abc/reference.png",
      "strength": 0.75
    }
  }
}