How to get a key (free):make a RapidAPI account, subscribe to a Twitter/X profile API (e.g. search RapidAPI for “twitter api45” or “twitter v2” — most have a free tier), then copy the
X-RapidAPI-Key and the host shown in its code sample below.Don’t want to set this up? You never have to — you can always just paste a profile on the check page. This only adds the type-a-handle convenience.