# Programmatically adding registrants to a webinar

**URL:** <https://devforum.zoom.us/t/programmatically-adding-registrants-to-a-webinar/39904>\
**Category:** API and Webhooks\
**Created:** [January 7, 2021, 2:41am UTC](https://devforum.zoom.us/t/programmatically-adding-registrants-to-a-webinar/39904 "2021-01-07T02:41:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nirs](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/nirs/32/20460_2.png) [@nirs](https://devforum.zoom.us/u/nirs)\
**Post date:** [January 7, 2021, 2:41am UTC](https://devforum.zoom.us/t/programmatically-adding-registrants-to-a-webinar/39904/1 "2021-01-07T02:41:14Z")

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I’ve created an OAuth application that enables me to create and manage webinars via a web interface. Authorization is performed via OAuth authorization\_code grants - and all is working nicely.

Now, I would like to add registrants to my created webinars, using the API. Now, when I try using the /webinats endpoint- this time from a server side application (not an interactive application), but it would seem that regardless of what key/secret combo I may have, they all produce a 400 error.

I’m confident that I’m doing something wrong, but I’m not sure what. Any assistance would be highly appreciated.

Regards,  
Nir S

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**Author:** ![MaxM](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/maxm/32/42303_2.png) [@MaxM](https://devforum.zoom.us/u/MaxM)\
**Post date:** [January 7, 2021, 10:10pm UTC](https://devforum.zoom.us/t/programmatically-adding-registrants-to-a-webinar/39904/2 "2021-01-07T22:10:32Z")

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Hey @nirs,

Thank you for reaching out to the Zoom Developer Forum. Please provide the full endpoint, request body and response involved in this and I’ll investigate this issue further.

Thanks,  
Max

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [February 7, 2021, 8:10am UTC](https://devforum.zoom.us/t/programmatically-adding-registrants-to-a-webinar/39904/3 "2021-02-07T08:10:35Z")

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