# Not a big issue - format of X-Ratelimit-Window "Rate Limit Window" value

**URL:** <http://forum.companieshouse.gov.uk/t/not-a-big-issue-format-of-x-ratelimit-window-rate-limit-window-value/1960>\
**Category:** API Issues\
**Created:** [August 14, 2018, 12:24pm UTC](http://forum.companieshouse.gov.uk/t/not-a-big-issue-format-of-x-ratelimit-window-rate-limit-window-value/1960 "2018-08-14T12:24:56Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dave\_t\_doe](http://forum.companieshouse.gov.uk/letter_avatar_proxy/v4/letter/d/e480ec/32.png) [@dave\_t\_doe](http://forum.companieshouse.gov.uk/u/dave_t_doe)\
**Post date:** [August 14, 2018, 12:24pm UTC](http://forum.companieshouse.gov.uk/t/not-a-big-issue-format-of-x-ratelimit-window-rate-limit-window-value/1960/1 "2018-08-14T12:24:56Z")

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Hi all,

Quite happy with the rate limit imposed on the API, just asking about this for completeness.

The current response for rate limits can include the following values:

```
X-Ratelimit-Limit: 600 // The rate limit.
X-Ratelimit-Remain: 599 // Requests remaining.
X-Ratelimit-Reset: 1534248540 // Time of next reset (e.g. 14 August 2018 12:09:00 GMT).
X-Ratelimit-Window: 5m // How long the rate limit reset window is.

```

Just for completeness, is there documentation for the `X-Ratelimit-Window` value? Is it always minutes and marked with `m` units or could it ever be reported in hours, or seconds. It is a slightly academic question as the `X-Ratelimit-Reset` should report the next reset time but I assume, in the future, the window value _could_ change dynamically for operational reasons indicating the window used in the next rate limit period.

Apologies if I’ve missed this in the documentation. I couldn’t find it. 😕