Start integrating with Karsa

Karsa accepts individual and business Customers, their evidence, financial activity, and source outcomes through one authenticated ingestion API.

Your first integration

Authenticate with your source-bound bearer credential.
Onboard a business and its UBOs in one atomic request. Every UBO becomes an INDIVIDUAL Customer.
Upload a complete customer dataset when you also have documents, an account, transactions, or source outcomes.
Use the Developer Platform to understand each resource and the API Reference to inspect exact request fields.

Create the business, its individual UBO Customers, their relationships, and the KYB submission together.

Add documents, an account, a transaction, and outcomes in the correct order.

Understand Customers, KYB, Accounts, Documents, Transactions, and Outcomes.

Inspect the exact request and response contract for every endpoint.