So I’m thinking back to the times I’ve used it. I want to say I assume they have a way to track where this is being used based on referrer, but I don’t remember clearly enough. I don’t think a given token has to be tied to any URL. You just get a token and validate it with a service.
But people who use it on a daily basis could probably answer more definitively. I’ve just used it a couple of times and didn’t bother retaining it because it’s easy to figure out when you need it.