> ## Documentation Index
> Fetch the complete documentation index at: https://docs.useasterisk.com/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Document only operations in the linked OpenAPI contract: the source-data ingestion operations and the source-scoped outbound webhook management operations.
> Treat the generated OpenAPI document as authoritative for request fields. Never invent compatibility fields, alternate endpoints, or additional source models.
> Preserve explicit nulls, decimal strings, timestamps, source identifiers, immutable version identifiers, and document-version links exactly as defined.

# Start integrating with Karsa

> Authenticate, onboard your first business and its UBOs, and send the source records Karsa evaluates.

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

## Your first integration

1. [Authenticate](/concepts/authentication) with your source-bound bearer credential.
2. [Onboard a business and its UBOs](/guides/business-onboarding) in one atomic request. Every UBO
   becomes an `INDIVIDUAL` Customer.
3. [Upload a complete customer dataset](/quickstart) when you also have documents, an account,
   transactions, or source outcomes.
4. Use the [Developer Platform](/platform/overview) to understand each resource and the API
   Reference to inspect exact request fields.

## Choose what you need

<CardGroup cols={2}>
  <Card title="Onboard a business" href="/guides/business-onboarding">
    Create the business, its individual UBO Customers, their relationships, and the KYB submission
    together.
  </Card>

  <Card title="Upload a complete dataset" href="/quickstart">
    Add documents, an account, a transaction, and outcomes in the correct order.
  </Card>

  <Card title="Explore the developer platform" href="/platform/overview">
    Understand Customers, KYB, Accounts, Documents, Transactions, and Outcomes.
  </Card>

  <Card title="Open the API Reference" href="/api-reference/customers/create-a-customer">
    Inspect the exact request and response contract for every endpoint.
  </Card>
</CardGroup>


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.