# 200 invalid api key or secret, testing in postman **URL:** \ **Category:** API and Webhooks\ **Created:** [September 20, 2022, 1:52am UTC](https://devforum.zoom.us/t/200-invalid-api-key-or-secret-testing-in-postman/76215 "2022-09-20T01:52:51Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![elisa.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/elisa.zoom/32/47836_2.png) [@elisa.zoom](https://devforum.zoom.us/u/elisa.zoom)\ **Post date:** [September 20, 2022, 9:30pm UTC](https://devforum.zoom.us/t/200-invalid-api-key-or-secret-testing-in-postman/76215/3 "2022-09-20T21:30:28Z")
Hi @inject Thanks for reaching out to the Zoom Developer Forum, I am happy to help here! Please refer to this post on how to use our Server-to-Server OAuth app in postman > [@How to user Server-to-Sever OAuth app with Postman](https://devforum.zoom.us/t/how-to-user-server-to-sever-oauth-app-with-postman/70848): > > How to use our Server-to-Server OAuth with Postman? As some of you might be aware of, our JWT app is being deprecated by June 2023 and we encourage you to migrate to the newly introduced [Server-to-Server OAuth App](https://marketplace.zoom.us/docs/guides/build/server-to-server-oauth-app) That being said, here is a quick and simple guide on how to use or new app with Postman As stated in our documentation here: This new app type facilitates OAuth-authenticated requests between servers without end-user involvement. And this grant type enable your private server a… Let me know if this helps, Elisa --- _[View the full topic](https://devforum.zoom.us/t/200-invalid-api-key-or-secret-testing-in-postman/76215)._