# `A2UICore`
[🔗](https://github.com/a2ui-elixir/a2ui/blob/v0.1.1/umbrella/apps/a2ui_core/lib/a2ui_core.ex#L1)

Elixir implementation of the [A2UI protocol](https://a2ui.org/) core engine:
versioned message envelopes, catalog schemas, surface state, data model,
and processing of agent-to-renderer updates.

The modules are layered:

  * primitives: `A2UICore.Version`, `A2UICore.Pointer`,
    `A2UICore.Identifier`, `A2UICore.Error`;
  * wire: `A2UICore.Message` and the operations it decodes to;
  * schema validation: `A2UICore.Schema`;
  * state: `A2UICore.State.Surface`, `A2UICore.State.DataModel`;
  * catalogs: `A2UICore.Catalog`, `A2UICore.Catalog.Basic`;
  * resolution: `A2UICore.Resolution.NodeResolver`,
    `A2UICore.Resolution.DataContext`;
  * processing: `A2UICore.Processor`;
  * function calls: `A2UICore.RPC`.

Start with `A2UICore.Processor` and the
[processing guide](processing_messages.html).

# `supported_protocol_versions`

```elixir
@spec supported_protocol_versions() :: [String.t()]
```

Lists the protocol versions this library supports.

## Examples

    iex> A2UICore.supported_protocol_versions()
    ["v0.9", "v0.9.1", "v1.0"]

---

*Consult [api-reference.md](api-reference.md) for complete listing*