Calls the actual RedGifs v2 API and needs no API key (it mints an
anonymous temporary token itself) — but RedGifs restricts that API's CORS policy
to its own site, so browser requests from anywhere else are routed through the
public CORS proxy below by default. Swap in your own proxy, or clear the field to
call the API directly (e.g. if "API base URL" already points at your own
CORS-permissive proxy).