# Critical API changes **URL:** \ **Category:** New Releases\ **Created:** [October 29, 2019, 11:09pm UTC](https://devforum.zoom.us/t/critical-api-changes/6453 "2019-10-29T23:09:47Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![michael\_p.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_p.zoom/32/18105_2.png) [@michael\_p.zoom](https://devforum.zoom.us/u/michael_p.zoom)\ **Post date:** [October 29, 2019, 11:09pm UTC](https://devforum.zoom.us/t/critical-api-changes/6453/1 "2019-10-29T23:09:48Z")
Hello Developer Community, There are a couple critical changes coming to Zoom APIs that will affect the functionality of your developed app integrations on the Zoom App Marketplace. The below API related changes will take effect within in 90 days on **January 20th 2020**. To continue uninterrupted service to your customers please take the following actions. **API Rate Limits** With our new rate limits, if you are using a Zoom free plan, you will need more API calls to provide uninterrupted services. To get more API calls please upgrade to a Pro account. See more info on this on our [rate limits page](https://marketplace.zoom.us/docs/api-reference/rate-limits). **V1 APIs** [Zooms V1 APIs](https://zoom.github.io/api-v1/#introduction) support will be removed in April 2020. Please upgrade to our version 2 APIs to avoid uninterrupted service. Check out our blog Your Guide to [Migrating From v1 to v2 APIs](https://medium.com/zoom-developer-blog/your-guide-to-migrating-from-v1-to-v2-apis-d4ded0474c04) and our [new API documentation](https://marketplace.zoom.us/docs/api-reference/zoom-api) to get familiarized with Zooms version 2 API. **IM Chat APIs** Our IM Chat APIs will be deprecated in favor for our new user level [Chat APIs](https://marketplace.zoom.us/docs/api-reference/zoom-api/chat-messages/getchatmessages) that we have released during October. The below API endpoints will be deprecated. /v2/im/chat/sessions /v2/im/chat/sessions/{sessionId} /v2/im/chat/messages /v2/im/users/{userId}/chat/messages /v2/im/users/me/chat/messages /v2/accounts/{accountId}/im/chat/sessions /v2/accounts/{accountId}/im/chat/sessions/{sessionId} The below changes will take effect within **30 days** on **November 17th**. To continue uninterrupted service to your customers please take the following actions. **Check user email** Our v2 Check user email endpoint will be changed. Moving forward, you will only be able to successfully check to see if a user exist, if they are within your account. Otherwise, we will return false that the user does not belong to your account. Happy Coding! ---
**Author:** ![kkoellner](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/kkoellner/32/11928_2.png) [@kkoellner](https://devforum.zoom.us/u/kkoellner)\ **Post date:** [October 30, 2019, 11:46am UTC](https://devforum.zoom.us/t/critical-api-changes/6453/2 "2019-10-30T11:46:56Z")
- - With our new rate limits, if you are using a Zoom free plan, you will need more API calls to provide uninterrupted services. Regarding that comment, can you point to any documentation that defines what APIs work with free users and in the future? The pricing sheet says the REST API is not included in Free. I seem to recall doing a test create meeting call and having it work. Maybe that won’t work have 1/20/2020. It would be great to get a definitive list of what works and what doesn’t for free users. ---
**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:** [October 30, 2019, 7:25pm UTC](https://devforum.zoom.us/t/critical-api-changes/6453/3 "2019-10-30T19:25:20Z")
Duplicate post: > [@Zoom Free LIcense and REST API](https://devforum.zoom.us/t/zoom-free-license-and-rest-api/6456): > > This page – [https://zoom.us/pricing](https://zoom.us/pricing) says Zoom Free license does not have the REST API. But, I tried a create meeting request with a free user and it worked. I received an email today that included one bullet that stated – If you are using a Zoom free plan, you will need more API calls to provide uninterrupted services… Can anyone provide definitive documentation on what API calls will work with a Free license now and in the future? -K We will answer it there ^ Thanks, Tommy ---
**Author:** ![michael\_p.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_p.zoom/32/18105_2.png) [@michael\_p.zoom](https://devforum.zoom.us/u/michael_p.zoom)\ **Post date:** [November 6, 2019, 7:25pm UTC](https://devforum.zoom.us/t/critical-api-changes/6453/4 "2019-11-06T19:25:21Z")
Closed on November 6, 2019, 7:25pm UTC This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.