> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.bigcommerce.com/_mcp/server. # Reference > Build amazing commerce solutions powered by the BigCommerce platform ## Docs - [Catalyst Client](https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/client.md): Reference for the Catalyst Client, which wraps the GraphQL Storefront API — configuration options, the fetch and fetchSitemapIndex methods, request headers, retries, error classes, and logging. - [Catalyst CLI](https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/cli.md): Reference for every Catalyst CLI command and flag, including create, deploy, env, logs, projects, channels, domains, auth, and upgrade. - [Environment Variables](https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/environment-variables.md): Reference for the environment variables a Catalyst storefront reads, with their types, defaults, and whether the Catalyst CLI sets them. - [Testing](https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/testing.md): Run Catalyst's Playwright UI tests and Vitest unit tests locally, and configure the test environment with .env.test. - [Privacy and Security](https://docs.bigcommerce.com/developer/docs/storefront/catalyst/reference/security.md): The BigCommerce certifications behind Catalyst, its default Content Security Policy, consent management, and Next.js framework security.