There is nothing CU*Answers can do to stop financial aggregation services like Mint from accessing our online banking products. Although we have set up many direct integration tools over the years (see the related links), members can also provide their credentials to whomever they choose and the process is entirely in the hands of that third party to maintain the connectivity.
Hint: Members who choose to do this will need to remember that whenever they change their online banking password, they'll need to log on to that third-party and update their credentials in order for future downloads to work properly. Likewise, whenever we make any significant changes to how members log in to the software, whether it's adding more security features, adjusting how the login widget works, etc., it may take time for the vendors to react and make the necessary adjustments on their end.