> For the complete documentation index, see [llms.txt](https://docs.hive.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hive.one/using-etags.md).

# Using ETags

Almost all of our endpoints will return an `ETag` in the HTTP Headers.

`ETags` allow you to check if the data you have is up to date with what we are providing. Saving you the need of unnecessary requests. 

Requests you make using `ETags` do not count against your API rate limit.

### How To Use ETags 

When using an endpoint such as [Influencer Details](/core-resources/profile-details-twitter-id.md), there will be an `ETag` HTTP header in that response. 

Example: `ETag: 61eadf9f35830be5544441d03dd53a27`

On subsequent requests to the same URL you can provide that ETag in your HTTP headers like so:

`If-None-Match: ETAG_HERE`

If your `ETag` is valid, your will receive a `304` status code. If it's not valid you will receive a `200` and the new data for that endpoint.

To find out more about `Etags` click [here](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/ETag)