# A2UI Extension for A2A Protocol <span class="version-badge stable">v0.8 — Stable</span>

> NOTE: Living Document
>
> This specification is automatically included from `specification/v0_8/docs/a2ui_extension_specification.md`. Any updates to the specification will automatically appear here.

> NOTE: Version Compatibility
>
> This extension specification applies to A2UI v0.8 and the A2A Protocol. For the base A2UI protocol, see [v0.8 Protocol Specification](v0.8-a2ui.md).

For more information, see the following related documentation:

- [A2UI Protocol v0.8](v0.8-a2ui.md) (Stable).
- [A2A Protocol Documentation](https://a2a-protocol.org).

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