> For the complete documentation index, see [llms.txt](https://trex-1.gitbook.io/trex/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trex-1.gitbook.io/trex/architecture/builder-and-activation-layers.md).

# Builder & Activation Layers

The Builder & Activation Layers are where the T-Rex architecture turns into practical tools and experiences. Developers gain direct access to Passports and Badges, while applications can activate the Value Graph through matching, recommendations, and services.