Braintree client token expiration

Question

In Braintree, When I generate a client token with a $customerId, how reliable is it to save that client token to database and re-use it later on?

I always have a user corresponding to a $customerId and it would greatly reduce the number of calls to Braintree if I could re-use the token.

Does the token ever expire? There is no mention of that in the official docs.

Thanks a lot!

Answer 1

_{Full disclosure: I work as a developer for Braintree}

The client token is not intended to be reused and will be revoked if a single client token is used multiple times in a short time span. You can read more about the client token in this part of the Braintree documentation. ​

Answer 2

This was a thing before 2019. In 2019 they changed the client token behavior so now it is granted for 24 hours and can be reused unless it was granted for specific CustomerId https://www.braintreepayments.com/blog/changes-to-client-tokens-are-coming/