I am running requests on the free account currently, which will probably change in the future. While on the free account I can keep track of how many requests I have locally, but I'd much rather get it from the source, you guys. Is there such a call?
That is an excellent feature request. Currently there is not an API call that will return the lookups remaining. We do always email you when you have 10% left on your account and you can certainly login to your account to see how many you have remaining. We will look into adding this feature, though it has not been requested very often.