> 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.

## Stencil Update for January 28, 2021

**Stencil**

Stencil CLI version 3.1 has split the `.stencil` file into `secrets.stencil.json` and `config.stencil.json` files. This change is backward compatible. `.stencil` will continue to exist on old themes and CLI versions.

**Developer Blog**

* [Introducing More Facets Per Category with Contextual Filters](https://medium.com/bigcommerce-developer-blog/introducing-more-facets-per-category-with-contextual-filters-d7479daf7941?source=collection_home---4------1-----------------------)

* [Supercharge the BigCommerce Storefront Using Widgets](https://medium.com/bigcommerce-developer-blog/supercharge-the-bigcommerce-storefront-using-widgets-cf75d5cf01d6?source=collection_home---4------0-----------------------)

* [What’s Trending in the Dev Community?](https://medium.com/bigcommerce-developer-blog/whats-trending-in-the-dev-community-89e62d1d4a86)