# Unsure which url to use when authorising Apps to use Mautic

**URL:** <https://forum.mautic.org/t/unsure-which-url-to-use-when-authorising-apps-to-use-mautic/13944>\
**Category:** Product Support\
**Created:** [April 17, 2020, 10:48am UTC](https://forum.mautic.org/t/unsure-which-url-to-use-when-authorising-apps-to-use-mautic/13944 "2020-04-17T10:48:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rodenp](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/rodenp/32/1504_2.png) [@rodenp](https://forum.mautic.org/u/rodenp)\
**Post date:** [April 17, 2020, 10:48am UTC](https://forum.mautic.org/t/unsure-which-url-to-use-when-authorising-apps-to-use-mautic/13944/1 "2020-04-17T10:48:40Z")

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**Your software**  
My Mautic version is: 2.16.2  
My PHP version is: 7.1.33

**Your problem**  
My problem is: I am trying to connect Mautic with other Apps and am unsure how to do this.

I am trying to hook up Calendy with my Mautic instance.  
I am a bit confused about how to authorise an App to use Mautic and which url to specify in the authorization request.

These errors are showing in the log:

When i try and authorize Calendy through the Postman App with the following request i get a 200 return and the Mautic login in the Postman body reply, which does not do anything when i click submit.

[http://mautic.draggy.io/oauth/v2/authorize](http://mautic.draggy.io/oauth/v2/authorize)?  
client\_id=xxxxxxxx  
&grant\_type=authorization\_code  
&redirect\_uri=https%3A%2F%[2calendly.com/api/v1/hooks](http://2calendly.com/api/v1/hooks)  
&response\_type=code

Then i tried the same directly through the browser:

# Uh oh! I think I broke it. If I do it again, please report me to the system administrator!

#### **500** Internal Server Error

Steps I have tried to fix the problem:

I have tested my Calendy app with hook [bin.com](http://bin.com) and it works well.

From Calendy documentation ([https://developer.calendly.com/docs/webhook-subscriptions](https://developer.calendly.com/docs/webhook-subscriptions))

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<div class="post-metadata">

**Author:** ![rodenp](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/rodenp/32/1504_2.png) [@rodenp](https://forum.mautic.org/u/rodenp)\
**Post date:** [April 19, 2020, 2:53pm UTC](https://forum.mautic.org/t/unsure-which-url-to-use-when-authorising-apps-to-use-mautic/13944/2 "2020-04-19T14:53:47Z")

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Please close this ticket.  
I have discovered the api tester which should do what i need.

Thanks

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**Author:** ![silavapi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/silavapi/32/7424_2.png) [@silavapi](https://forum.mautic.org/u/silavapi)\
**Post date:** [April 20, 2020, 8:00am UTC](https://forum.mautic.org/t/unsure-which-url-to-use-when-authorising-apps-to-use-mautic/13944/3 "2020-04-20T08:00:30Z")

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