Shopify

Shopify provides comprehensive APIs for building e-commerce solutions. The GraphQL Admin API is the modern approach (REST API is legacy as of 2024).

OAuth 2.0 handles authentication with online and offline access tokens. The Storefront API enables custom shopping experiences. Additional APIs include Ajax API, Section Rendering API, Customer Privacy API, and Webhooks for real-time updates. Official SDKs available for Node.js, Ruby, and Python.

Rate limits are based on API cost calculations. Shopify CLI streamlines app development. Free development stores available. Ideal for e-commerce integrations, custom storefronts, and app development.