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KYB APIs

Business identity, registration, and business document OCR services for confident merchant onboarding.

Business familyConfirm an entity is registered and trading.6 published APIs here, in a catalog of 100+ across 8 families.
Available APIs

Every KYB API

Each card says what the service does and what it covers, in the words the catalog publishes. Our content team keeps this list current.

6 APIs in KYB100+ APIs across the catalog

Popular

Business PAN Verification API

Check the PAN a business or its authorized signatory submits, see which category of holder sits behind the number, and use the result inside merchant and vendor onboarding.CoversPANs issued to businesses, proprietors and signatories across IndiaView API
New

PAN-to-GST Lookup API

Find the GST registrations recorded against a PAN, including ones in states you did not know about, and put the right GSTIN on a merchant or vendor record.CoversGST registrations recorded against a PAN across Indian states and union territoriesView API

Udyam Verification API

Check an Udyam registration number and confirm the enterprise behind it. See how it is classified. Payment terms, procurement policy and credit decisions then rest on verified MSME status.CoversUdyam registrations issued to micro, small and medium enterprises in IndiaView API
New

PAN-to-Udyam Lookup API

Start from a PAN and find the Udyam registration recorded against it. A vendor record then carries checked MSME status even when the supplier cannot produce a certificate.CoversUdyam registrations recorded against a PAN in IndiaView API

Business Document OCR API

Read supported business-document images with OCR and return structured KYB fields.CoversIndiaView API
New

Mobile to MSME API

Resolve the Udyam registration linked to a consented mobile number, then use the MSME details you get back to classify, onboard or pay a supplier.CoversUdyam-registered enterprises in IndiaView API
Why FinSour

What to expect when you integrate

Bring the checks you need into one workflow, with the same setup each time.

Only the checks you need

Pick the services your workflow uses and leave the rest.

Structured results

Each response returns documented fields and a status your product can act on.

Planned data handling

Work out your security, retention and audit needs with us during onboarding.

Help while you connect

Confirm the inputs, the response fields and your rollout plan with our team.

One integration

One integration for KYB.

Choose the checks you need from this family. You build the integration once and reuse it for the rest.

One clear catalog

Keep the selected services and their product context visible in one place.

Focused integration

Use the service-specific request, response and consent requirements documented for each API.

Current content

Published descriptions, workflows and metadata can be maintained through the dashboard.

Get started

Add KYB checks to your product

Tell us what you are building. We will point you at the right checks and set up your access.