Salesforce Commerce API (SCAPI)
Modern REST API family for B2C Commerce Cloud built on a unified RAML specification, organized into Shopper, Data, and Admin APIs for headless commerce. Authentication uses OAuth 2.0 via Salesforce Account Manager (SLAS for shopper flows). Custom APIs allow developers to publish their own endpoints under the SCAPI framework using an OAS 3.0 schema contract.
Documentation
Other Resources
API References
https://developer.salesforce.com/docs/commerce/commerce-api/references
API Explorer
https://api-explorer.commercecloud.salesforce.com
Why Use SCAPI
https://developer.salesforce.com/docs/commerce/commerce-api/guide/why-use-scapi.html
Custom APIs
https://developer.salesforce.com/docs/commerce/commerce-api/guide/custom-apis.html