User Oauth Mysql

See [../concepts/oauth-flows.md](../concepts/oauth-flows.md) and official Zoom samples for implementation details.

Official sample repositories:

• https://github.com/zoom/oauth-sample-app
• https://github.com/zoom/server-to-server-oauth-token
• https://github.com/zoom/server-to-server-oauth-starter-api
• https://github.com/zoom/user-level-oauth-starter