# REST API - Authentication

**URL:** <https://forum.mautic.org/t/rest-api-authentication/4096>\
**Category:** Development\
**Created:** [July 4, 2016, 12:48pm UTC](https://forum.mautic.org/t/rest-api-authentication/4096 "2016-07-04T12:48:54Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![yclpjr](https://avatars.discourse-cdn.com/v4/letter/y/22d042/32.png) [@yclpjr](https://forum.mautic.org/u/yclpjr)\
**Post date:** [July 4, 2016, 12:48pm UTC](https://forum.mautic.org/t/rest-api-authentication/4096/1 "2016-07-04T12:48:54Z")

</div>

Hello everyone.  
  
  
  
I’m trying to make an authentication using the suggested libraries, but when I write the return url gives an error .  
  
  
  
I would like community support .  
  
  
  
Sorry for the english  
  
  
  
Thank you

---

<div class="post-metadata">

**Author:** ![yclpjr](https://avatars.discourse-cdn.com/v4/letter/y/22d042/32.png) [@yclpjr](https://forum.mautic.org/u/yclpjr)\
**Post date:** [July 4, 2016, 12:48pm UTC](https://forum.mautic.org/t/rest-api-authentication/4096/2 "2016-07-04T12:48:54Z")

</div>

Hello everyone.

I’m trying to make an authentication using the suggested libraries, but when I write the return url gives an error .

I would like community support .

Sorry for the english

Thank you