Modern Treasury has the ability to issue checks in both the app and API.
Some banks natively support remote check print. Talk to your banking contact to sign up for programmatic check print with your bank. Your bank account will need to be enabled for check print prior to using it as a payment type, so you will want to work with your Modern Treasury CSM as well to complete setup.
If check print with your bank is not available or not the right option, Modern Treasury offers the ability to issue checks programmatically via Lob. If you are not currently enabled, reach out to your CSM to get started, as you do not need to sign up for Lob separately. Lob sends checks issued on the platform via USPS First Class Mail.