https://mahagram.in/mahagram-services-and-solutions/best-free-open-aeps-dmt-api/   

AePS, DMT & Payments APIs for Your Business Application

 
Payments [BillPay, UPI, DMT, Utilities]
Build awesome payment product using mahagram's payments APIs sandbox.
 
Banking [Accounts, AePS, Prepaid Card]
Build your NEO Banking Platform using our Open banking APIs.