similar_image API Stock

Hello everyone,

I'm trying to use the Adobe Stock Image Search API.

I'm sending a POST request to /Rest/Media/1/Search/Files with similar_image (multipart file upload) and search_parameters[similar_image]=1.

The request works (status 200, results returned), but the response header always shows x-search-type: uss instead of vss, and the results are always the same, not visually similar files.

I also tried with postmann, same results.

I also tried with similar_url, same problem.

Has anyone else encountered this problem?

Do I need special permissions on my API key to enable Visual Similarity Search (VSS)?

Thanks!