> For the complete documentation index, see [llms.txt](https://docs.keyring.network/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keyring.network/docs/protocol-guide.md).

# PROTOCOL GUIDE

- [Sandbox](https://docs.keyring.network/docs/protocol-guide/sandbox.md)
- [Keyring Connect](https://docs.keyring.network/docs/protocol-guide/sandbox/keyring-connect.md)
- [Keyring Pro](https://docs.keyring.network/docs/protocol-guide/sandbox/keyring-pro.md)
- [Data Flow](https://docs.keyring.network/docs/protocol-guide/data-flow.md)
- [Data Collected](https://docs.keyring.network/docs/protocol-guide/data-flow/data-collected.md): Keyring processes and stores two main types of data defined below.
- [Data Storage](https://docs.keyring.network/docs/protocol-guide/data-flow/data-storage.md)
- [Smart Contracts](https://docs.keyring.network/docs/protocol-guide/smart-contracts.md)