Is there a way of querying how much of the API limit has been used?

Question

Twitter has the ability as part of its API to query the current rate limit status. Going to this url will show you how many requests can be made before the limit is reached:

{"remaining_hits":150,  
 "hourly_limit":150,
 "reset_time_in_seconds":1274399014,
 "reset_time":"Thu May 20 23:43:34 +0000 2010"}

Requests to this url also do not count towards the limit.

Is there a similar ability with the SO API? If so, how is it done?

Answer 1

I imagine a /status method would not be too hard, and is crucial in both testing and deploying applications.

Imagine an application that updates a database with new questions. It can query the /status method to correctly time it's calls so that it can make it through the day.

I would also consider whether this call should count towards the limit. Twitter, for instance, doesn't count a /status call against the limit.

---

Actually, it is included in all headers. From Chrome, here is what I get back:

Cache-Control:private
Connection:keep-alive
Content-Encoding:gzip
Content-Length:5158
Content-Type:application/json;
charset=utf-8 Date:Thu, 20 May 2010
23:18:10 GMT Server:nginx
X-AspNet-Version:2.0.50727
X-AspNetMvc-Version:2.0
X-RateLimit-Current:298
X-RateLimit-Max:300