OAuth Issues

• The redirect URL in the token exchange must exactly match what’s configured in Marketplace.
• Keep endpoint split correct:
  • authorize: https://zoom.us/oauth/authorize
  • token exchange: https://zoom.us/oauth/token

“Invalid access token, does not contain scopes”

• Add the scope in Marketplace.
• Ensure the user re-authorizes after scope changes.
• Confirm you’re using the user token for Team Chat API calls.

Token Expired

• Refresh access tokens using the refresh token.
• If refresh fails, the user likely needs to reauthorize.

Callback succeeds but app still has no token

• Verify callback route actually exchanges code server-side.
• Verify state is validated and not expired.
• Verify token is persisted where your UI expects it (session/database/local storage for demo).