> For the complete documentation index, see [llms.txt](https://docs.zetrix.com/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zetrix.com/en/developer-resources/agentic-wallet/architecture.md).

# Architecture

This section defines the actors in an x401/x402 exchange, the key terms used throughout the paper, the two components to build alongside existing Zetrix wallet infrastructure, the split between software and HSM cryptography, and how Zetrix realizes each x401 abstraction.

* [Roles](/en/developer-resources/agentic-wallet/architecture/roles.md)
* [Key terms](/en/developer-resources/agentic-wallet/architecture/key-terms.md)
* [Component design](/en/developer-resources/agentic-wallet/architecture/component-design.md)
* [Crypto architecture split](/en/developer-resources/agentic-wallet/architecture/crypto-architecture-split.md)
* [Where Zetrix fits the x401 abstractions](/en/developer-resources/agentic-wallet/architecture/where-zetrix-fits-the-x401-abstractions.md)