Upload asset

curl --request POST \
  --url https://api.fal.ai/v1/assets/uploads \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "url": "https://v3b.fal.media/files/b/0a9b4900/PDbTGyzqRh1aijW2WQiY9_opengraph-1%20%281%29.png",
  "type": "image"
}
'

{
  "asset": {
    "vector_id": "b1a2b4a5-cb89-51dc-a108-6dbfd8e742fc",
    "request_id": "019e6d0a-e5be-7b82-b329-35ae64296902",
    "url": "https://v3b.fal.media/files/b/0a9b4900/PDbTGyzqRh1aijW2WQiY9_opengraph-1%20%281%29.png",
    "type": "image",
    "title": "Cinematic portrait",
    "endpoint": "fal-ai/flux/dev",
    "created_at": "2026-05-23T20:00:00.000Z",
    "source": "upload",
    "prompt": "cinematic portrait of a character",
    "width": 1024,
    "height": 1024,
    "content_type": "image/png",
    "is_favorited": false,
    "collection_ids": [
      "d8b6elcregj72v34jr8g"
    ],
    "tags": [
      {
        "id": "43ce3411-1a25-4d14-875e-3562d341b090",
        "name": "moodboard",
        "created_at": "2026-05-23T20:00:00.000Z"
      }
    ],
    "similarity": 0.92
  }
}