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

# Layers

## Contents

1. [Layer 1: Core](/flow-specification/layers/1-core.md)
2. [Layer 2: Mobile Primitives](/flow-specification/layers/2-mobile-primitives.md)
3. [Layer 3: Smart Devices](/flow-specification/layers/3-smart-devices.md)