Currently, we are set at a max of 3 per day, cash out or cash in. I'm working on adjusting these limits, and like you, getting ready to put them in our disclosures (we weren't aware they had set outside parameters for AFT and OCTs).
There are two upcoming adjustments that have been mandated by VISA though.
Effective 10-16-20, domestic A2A transactions (VISA Direct OCTs) minimum will increase to $25,000 (meaning we can't set a limit lower than $25,000). There is more information on the daily/weekly/monthly limits in the VISA Business News article.
Effective 4-16-21, AFT (Account Funding Transactions) will increase to a $5,000 minimum per transaction.