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> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.cash.app/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.cash.app/_mcp/server.

# Integrate your store or platform with Cash App

Accept payments from Cash App, the #1 personal finance app in the US.\*

## Start your integration here

#### For sellers

Add Cash App Pay or Afterpay to your store's checkout.

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Read docs

#### For payment service providers

Build and maintain your platform's Cash App Pay integration.

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Read docs

### Quick access

#### For sellers:

#### [Migration Information](/cash-app-afterpay/guides/welcome/migrate-from-afterpay-to-cash-app-afterpay)

#### [E-Commerce Quickstart](/cash-app-afterpay/guides/platforms/platforms-quickstart)

#### [API Quickstart](/cash-app-afterpay/guides/api-development/api-quickstart)

#### For payment service providers:

#### [Integration Basics](/cash-app-pay-partner-api/guides/technical-guides/cash-app-pay-integration-basics)

#### [Pay Kit](/cash-app-pay-partner-api/guides/pay-kit-sdk/pay-kit-web-overview/pay-kit-benefits)

#### [API Integration Quickstart](/cash-app-pay-partner-api/guides/technical-guides/integrating-with-cash-app-pay/api-integration-quickstart)

\*Source: Based on mobile app MAUs from SensorTower in 2024