ag-ui

AG-UI is a leading agent protocol in the 2026 AI agent engineering landscape (14.5k★).

When to use this skill

• Open, event-based protocol standardizing agent <-> frontend interaction
• ~16 standard event types: lifecycle, text streaming, tool calls, state patches
• Transport-agnostic: SSE, WebSocket, webhooks
• Bidirectional state sync (snapshots + JSON-patch deltas)
• Generative UI + human-in-the-loop collaboration patterns
• First-party/partner integrations: LangGraph, CrewAI, Mastra, Pydantic AI, ADK, Agno...; TS + Python SDKs; CopilotKit client
• Ecosystem overlap: a2a-protocol (this repo) covers agent<->agent; ag-ui covers agent<->user — explicit protocol-suite completion

Installation

npx create-ag-ui-app my-agent-app