Rate limit
The rate limit for this API uses a sliding window of 15 minutes. Within this window, a maximum of 1000 requests can be made per user.

Every request returns the following headers, indicating the number of requests made within this window, the amount of requests remaining and the reset timestamp.

X-Rate-Limit-Limit: 1000
X-Rate-Limit-Remaining: 650
X-Rate-Limit-Reset: 1485875578

When this rate limit is exceeded, the response contains an error with HTTP status code: 429: Too many requests.

https://api.transip.nl/rest/docs.html#header-rate-limit