ag-ui-protocol/ag-ui

AG-UI solves the lack of a standardized interface for agent-to-user interaction, complementing MCP (tools) and A2A (agent-to-agent) by focusing on bringing agents into frontend applications with real-time streaming, bi-directional state sync, and human-in-the-loop collaboration.

Developers can build real-time agentic chat interfaces, generative UI with structured messages, frontend tool integrations, and collaborative workflows where humans can intervene mid-execution. Use cases include AI-powered copilots, interactive assistants, and applications requiring dynamic agent-driven UIs.