# Redirect URL for OAuth with variable in URL when submit app **URL:** \ **Category:** API and Webhooks\ **Created:** [April 29, 2020, 11:59am UTC](https://devforum.zoom.us/t/redirect-url-for-oauth-with-variable-in-url-when-submit-app/15400 "2020-04-29T11:59:28Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![arcangelgirl](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/arcangelgirl/32/4591_2.png) [@arcangelgirl](https://devforum.zoom.us/u/arcangelgirl)\ **Post date:** [April 29, 2020, 11:59am UTC](https://devforum.zoom.us/t/redirect-url-for-oauth-with-variable-in-url-when-submit-app/15400/1 "2020-04-29T11:59:28Z")
Hello, I’m trying to submit my app to Zoom Marketplace. In “App credentials” section it asks for the “Redirect URL for OAuth”. My redirect URL contains variables in it. The question is, how should I write the URL? What should be written instead of USERNAME\_VARIABLE and VARIABLE? I can not use static URL for redirect and the URL has to be exactly like below, otherwise it will not work. [https://mydomain.com/members/USERNAME\_VARIABLE/events/create/?cnum=VARIABLE](https://mydomain.com/members/USERNAME_VARIABLE/events/create/?cnum=VARIABLE) Also in section “Feature” it says “_Use this verification token to validate an event notification request from [zoom.us](https://zoom.us/) for this app_”. I didn’t find much about this, what should I do and where to add this token. Thank you for your help. ---
**Author:** ![tommy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/tommy/32/72769_2.png) [@tommy](https://devforum.zoom.us/u/tommy)\ **Post date:** [May 4, 2020, 9:56pm UTC](https://devforum.zoom.us/t/redirect-url-for-oauth-with-variable-in-url-when-submit-app/15400/2 "2020-05-04T21:56:12Z")
Hey @arcangelgirl, > [@arcangelgirl](#): > > he question is, how should I write the URL? What should be written instead of USERNAME\_VARIABLE and VARIABLE? I can not use static URL for redirect and the URL has to be exactly like below, otherwise it will not work. > > [https://mydomain.com/members/USERNAME\_VARIABLE/events/create/?cnum=VARIABLE](https://mydomain.com/members/USERNAME_VARIABLE/events/create/?cnum=VARIABLE) You can just submit a default redirect url. Just make sure your domain is in your whitelist. See my explanation here: > [@Does zoom support more than two environments for oauth2?](https://devforum.zoom.us/t/does-zoom-support-more-than-two-environments-for-oauth2/11052/12): > > Hey @tuancode, @michael.solomon, This is totally possible! slight_smile Let me walk you through how to do this with the base domain of example.com For your whitelist, simply add your base domain: https://example.com Then in your dev/prod redirect url field, add a default redirect, https://any.example.com (this will be programmatically overridden to the correct sub domain, continue reading below) Now, with your install URL ([the url mentioned in Step 1. of the OAuth guide](https://marketplace.zoom.us/docs/guides/auth/oauth#getting-access-token)) in your code, dyna… > [@arcangelgirl](#): > > Also in section “Feature” it says “ _Use this verification token to validate an event notification request from [zoom.us](https://zoom.us/) for this app_ ”. I didn’t find much about this, what should I do and where to add this token. This is for validating that any [webhooks](https://marketplace.zoom.us/docs/api-reference/webhook-reference) you receive come from Zoom and not a DDOS attacker. Thanks, Tommy ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 9:02pm UTC](https://devforum.zoom.us/t/redirect-url-for-oauth-with-variable-in-url-when-submit-app/15400/3 "2020-08-21T21:02:31Z")
Closed on August 21, 2020, 9:02pm UTC