https://github.com/ag-ui-protocol/ag-ui?tab=readme-ov-file
AG-UI: The Agent-User Interaction Protocol
AG-UI is an open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing applications. Built for simplicity and flexibility, it enables seamless integration between AI agents, real time user context, and user interfaces.
Features
- ?? Real-time agentic chat with streaming
- ?? Bi-directional state synchronization
- ?? Generative UI and structured messages
- ?? Real-time context enrichment
- ??? Frontend tool integration
- ????? Human-in-the-loop collaboration
https://docs.ag-ui.com/introduction
The Agent–User Interaction (AG-UI) Protocol
AG-UI is an open, lightweight, event-based protocol that standardizes how AI agents connect to user-facing applications. Built for simplicity and flexibility, it standardizes how agent state, UI intents, and user interactions flow between your model/agent runtime and user-facing frontend applications—to allow application developers to ship reliable, debuggable, user?friendly agentic features fast while focusing on application needs and avoding complex ad-hoc wiring.
Building blocks (today & upcoming)
Streaming chat
Live token and event streaming for responsive multi turn sessions, with cancel and resume.
Multimodality
Typed attachments and real time media (files, images, audio, transcripts); supports voice, previews, annotations, provenance.
Generative UI, static
Render model output as stable, typed components under app control.
Generative UI, declarative
Small declarative language for constrained yet open-ended agent UIs; agents propose trees and constraints, the app validates and mounts.
Shared state
(Read-only & read-write). Typed store shared between agent and app, with streamed event-sourced diffs and conflict resolution for snappy collaboration.
Thinking steps
Visualize intermediate reasoning from traces and tool events; no raw chain of thought.
Frontend tool calls
Typed handoffs from agent to frontend-executed actions, and back.
Backend tool rendering & side effects
Visualize backend tool outputs in app and chat, emit side effects as first-class events.
Interrupts (human in the loop)
Pause, approve, edit, retry, or escalate mid flow without losing state.
Sub-agents and composition
Nested delegation with scoped state, tracing, and cancellation.
Agent steering
Dynamically redirect agent execution with real-time user input to guide behavior and outcomes.
Tool output streaming
Stream tool results and logs so UIs can render long-running effects in real time.
Custom events
Open-ended data exchange for needs not covered by the protocol.
視頻講解
https://www.bilibili.com/video/BV1k6EPzjECG/?vd_source=57e261300f39bf692de396b55bf8c41b
在線體驗
https://dojo.ag-ui.com/langgraph-fastapi/feature/shared_state
出處：http://www.rzrgm.cn/lightsong/
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