A2UIAgent (A2UIAgent v0.1.1)

Agent-side SDK for the A2UI protocol, built on A2UICore.

An agent registers the catalogs it can write for, negotiates them with each renderer, tells the model how to write A2UI and reads the model's output back as validated messages.

• A2UIAgent.CatalogProvider, A2UIAgent.CatalogConfig and A2UIAgent.CatalogTransformer — load the catalogs an agent registers and prune them to what it uses.
• A2UIAgent.CatalogResolver — picks the active catalogs from a renderer's capabilities.
• A2UIAgent.Generator and A2UIAgent.RequestProcessor — per request: the negotiated catalogs, the prompt snippet and parsers.
• A2UIAgent.DirectJson — the direct JSON inference format: its prompt (A2UIAgent.DirectJson.Prompt) and its parser for complete and streamed responses (A2UIAgent.DirectJson.Parser).
• A2UIAgent.PayloadValidator — checks a payload the way a renderer holding the same catalogs would.
• A2UIAgent.A2A, A2UIAgent.A2A.Server and A2UIAgent.A2A.Plug — the A2A extension: A2UI parts and extension negotiation, the message/send and message/stream methods, and a plug that serves them over HTTP.

Everything is plain data: there are no processes, and a streaming parser is a value that each chunk updates.