> This page is for Developer.

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

# Customer Login (SSO)

Enable single sign-on for shoppers on BigCommerce hosted storefronts.

[Learn more about the customer login API](/developer/docs/storefront/guides/customer-authentication/customer-login).

For info about API accounts, see our [Guide to API Accounts](/developer/docs/overview/api-fundamentals/api-accounts#api-accounts).

For info about authenticating BigCommerce APIs, see [Authentication and Example Requests](/developer/docs/overview/api-fundamentals/api-accounts#user-generated-jwts).