Fintech APIs for all your needs
Embed financial services into your products using our modular building block APIs for payments, lending, investments and more.

There’s an API for that
A comprehensive product line for countless use-cases across domains.
PAYMENTS
UPI DeepLinks
Simplest pay link experience in the world
Collect BBPS
Collect bill payments across 400+ apps
Collect PhonePe
Accept EMI payments via PhonePe
FASTag
A complete FASTag management suite
MESSAGING
WhatsApp Banking
Fintech APIs bundled with smart chatbots
INVESTMENTS
Fixed Deposits
Book FDs from any app, without opening a new bank account
LENDING
Business Loans
Cash flow-based loans using OCEN APIs
Consumer Loans
Embed personal credit into any user flow, using OCEN APIs
Modular API design
All our products are API-first, pick and choose just the parts you need.
Single point-of-contact
We navigate across teams within large banks and FIs, so you don’t have to.
Secure, and compliant at scale
We handle all your IT security audit and compliance needs, so you can focus on building.
Exhaustive documentation & support
Clear, cohesive docs across all products, and world-class developer support.
D91 Labs is an open-source initiative by Setu that publishes primary user research and insights for fintech organisations building for India. We conduct in depth qualitative and quantitative user studies across various socio-economic classes of India.