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

# Xai Protocol

Arbitrum is a layer-2 scaling solution for Ethereum, designed to improve the scalability and reduce the transaction fees of the Ethereum blockchain. Within the Arbitrum ecosystem, there are a variety of chains and technologies at play.