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Introduction

SimpleCheckout provides commerce infrastructure for AI applications.

Building commerce into agent-driven applications means solving problems that have nothing to do with your core product:

  • Catalog: Scraping and normalizing catalogs from multiple merchants. Keeping data fresh. Handling different product schemas and variant structures.

  • Carts: Managing shopping sessions across multiple merchants with real-time pricing. Getting accurate tax and shipping calculations from each store. Providing users a unified cart view when items come from different merchants.

  • Checkout Execution: Most e-commerce sites don't offer checkout APIs. The only option is browser automation, which means handling anti-bot detection, dynamic forms, and merchant-specific flows. Then there's securely collecting and storing user payment credentials without becoming a merchant of record, staying PCI compliant while enabling programmatic purchases.

Companies building innovative commerce experiences shouldn't have to rebuild this infrastructure. That's what SimpleCheckout does.

We provide the infrastructure that lets AI agents discover, compare, and purchase across merchants on behalf of your users.

Complete Commerce Infrastructure​

SimpleCheckout provides everything you need for agentic commerce:

Catalog API - Search and discover products across multiple merchants with a unified API. Get standardized product data instead of scraping and normalizing catalogs yourself. Returns product variants with unique IDs you can use for cart management.

Universal Cart API - Manage shopping carts with real-time pricing from merchants. Your users see a single unified cart even when items come from different stores. Update a shipping address and get accurate tax and shipping calculations before executing checkout.

Checkouts API - Execute purchases programmatically on any e-commerce site. Provide a URL and customer information and we handle the browser automation, payment injection, and purchase completion. Works with any store, whether they have an API or not.

Account Connection - Enable your customers to connect their accounts from other shops. Unlock personalized shopping predictions and tailored recommendations for better customer experiences.

Who This Is For​

SimpleCheckout is built for teams creating ai applications:

  • AI shopping assistants that purchase on behalf of users
  • Virtual styling services that need to complete transactions

If you're building commerce experiences and don't want to become an infrastructure company, SimpleCheckout provides the foundation you need.

Next Steps​

Authentication - Set up your API keys

Product Search - Search and discover products across merchants

Universal Cart - Manage shopping carts with real-time pricing

Agentic Checkouts - Execute purchases programmatically

Connecting Accounts - Connect customer accounts with third-party shops