Is the API Rate Limited?
Yes, like a lot of public API's, ours is rate limited. The default rate limit is 2500 api calls per day. We'll continue to fine tune this as the system matures. If you would like an increased rate limit, drop us a line at firstname.lastname@example.org and we'll help you out.
We actually have 2 level of rate limits: * 2500/day * 2 calls per second
You can see information in the HTTP response headers on how many calls you have left (X-Rate-Limit-* header fields).
You will see a lovely 401 status code if this happens.