A function for each component of the basic catalog, named after it in snake case: text/1, text_field/1, date_time_input/1 and so on. Each one is A2UIAgent.Builder.component/2 with the component's name.

iex> import A2UIAgent.Builder.Basic
iex> text(text: "Hello", variant: "caption")
%A2UIAgent.Builder.Component{component: "Text", props: [{"text", "Hello"}, {"variant", "caption"}]}

The basic catalogs of protocol v0.9 and v1.0 have the same components; their properties differ a little. Pass the catalog you write for to A2UIAgent.Builder.flatten/2 (:catalog) to fill in its defaults and check each component against it.