User metadata and JWT token limits

I have some doubts:

  1. Are there Auth0 limits in the generated user Jwt?
  2. Are there any app_metadata limits?

Relative to: Getting "The generated token is too large" error - Auth0 Community

As mentioned in the answer to the linked question there are currently hard limits on the size of the issued token when using the implicit grant.

With regards to app_metadata limits you should check (https://auth0.com/docs/metadata) for reference information. However, have in mind that app_metadata should not be seen as an escape hatch to try to not have dedicated client application storage so also be sure to read (https://auth0.com/docs/user-profile/user-data-storage).