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

# Echo Liquid Restaking Tokens

- [Introduction to aBTC](https://echo-protocol.gitbook.io/echo-protocol/echo-liquid-restaking-tokens/introduction-to-abtc.md)
- [Introduction to eAPT](https://echo-protocol.gitbook.io/echo-protocol/echo-liquid-restaking-tokens/introduction-to-eapt.md)