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.

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Join our Discord →     Read the Docs →     Go to the AG-UI Dojo →     Follow us →

🚀 Getting Started

Create a new AG-UI application in seconds:

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

• The AG-UI Dojo
• Build AG-UI-powered applications(Quickstart)
• Build new AG-UI framework integrations (Quickstart)
• Book a call to discuss an AG-UI integration with a new framework
• Join the Discord Community

What is AG-UI?

AG-UI is an open, lightweight, event-based protocol for agent-human interaction, designed for simplicity & flexibility:

• During agent executions, agent backends emit events compatible with one of AG-UI’s ~16 standard event types
• Agent backends can accept one of a few simple AG-UI compatible inputs as arguments

AG-UI includes a flexible middleware layer that ensures compatibility across diverse environments:

• Works with any event transport (SSE, WebSockets, webhooks, etc.)
• Allows for loose event format matching, enabling broad agent and app interoperability

It also ships with a reference HTTP implementation and default connector to help teams get started fast.

Learn more about the specs →

Why AG-UI?

AG-UI was developed based on real-world requirements and practical experience building in-app agent interactions.

Where does AGUI fit in the agentic protocol stack?

AG-UI is complementary to the other 2 top agentic protocols

• MCP gives agents tools
• A2A allows agents to communicate with other agents
• AG-UI brings agents into user-facing applications

🚀 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

🛠 Supported Integrations

AG-UI was born from CopilotKit’s initial partnership with LangChain and CrewAI - and brings the incredibly popular agent-user-interactivity infrastructure to the wider agentic ecosystem.

1st party = the platforms that have AG‑UI built in and provide documentation for guidance.

Frameworks

Framework	Status	AG-UI Resources
Built-in Agent	✅ Supported	➡️ Docs

🤝 Partnerships

Framework	Status	AG-UI Resources
LangChain	✅ Supported	➡️ Docs 🎮 Demos
CrewAI	✅ Supported	➡️ Docs 🎮 Demos

🧩 1st Party

Framework	Status	AG-UI Resources
Microsoft Agent Framework	✅ Supported	➡️ Docs 🎮 Demos
Google ADK	✅ Supported	➡️ Docs 🎮 Demos
AWS Strands Agents	✅ Supported	➡️ Docs 🎮 Demos
Mastra	✅ Supported	➡️ Docs 🎮 Demos
Pydantic AI	✅ Supported	➡️ Docs 🎮 Demos
Agno	✅ Supported	➡️ Docs 🎮 Demos
LlamaIndex	✅ Supported	➡️ Docs 🎮 Demos
AG2	✅ Supported	➡️ Docs 🎮 Demos
AWS Bedrock Agents	🛠️ In Progress	–

🌐 Community

Framework	Status	AG-UI Resources
Claude Agent SDK	✅ Supported	🎮 Demos
Claude Managed Agents SDK	✅ Supported	🎮 Demos
Langroid	✅ Supported	🎮 Demos
OpenAI Agent SDK	🛠️ In Progress	–
Cloudflare Agents	🛠️ In Progress	–

Agent Interaction Protocols

Protocols	Status	AG-UI Resources	Integrations
A2A	✅ Supported	➡️ Docs	Partnership

Infrastructure / Deployment

Platform	Status	AG-UI Resources	Integrations
Amazon Bedrock AgentCore	✅ Supported	➡️ Docs	1st Party

Specification (standard)

Framework	Status	AG-UI Resources
Oracle Agent Spec	✅ Supported	➡️ Docs 🎮 Demos

Generative UI

Framework	Status	AG-UI Resources
MCP Apps	✅ Supported	➡️ Docs 🎮 Demos

SDKs

SDK	Status	AG-UI Resources	Integrations
Kotlin	✅ Supported	➡️ Getting Started	Community
Golang	✅ Supported	➡️ Getting Started	Community
Dart	✅ Supported	➡️ Getting Started	Community
Java	✅ Supported	➡️ Getting Started	Community
Rust	✅ Supported	➡️ Getting Started	Community
Ruby	✅ Supported	➡️ Getting Started	Community
C++	✅ Supported	➡️ GitHub Source	Community
.NET	✅ Supported	➡️ Getting Started	Community
Nim	🛠️ In Progress	➡️ PR	Community
Flowise	🛠️ In Progress	➡️ GitHub Source	Community
Langflow	🛠️ In Progress	➡️ GitHub Source	Community

Clients

Client	Status	AG-UI Resources	Integrations
CopilotKit	✅ Supported	➡️ Getting Started	1st Party
Terminal + Agent	✅ Supported	➡️ Getting Started	Community
Chat platforms (Slack, Microsoft Teams)	✅ Supported	➡️ Channels SDK 🎮 OpenTag example	1st Party
React Native	✅ Supported	➡️ Example	1st Party

View all supported integrations →

Examples

Hello World App

Video:

https://github.com/user-attachments/assets/18c03330-1ebc-4863-b2b8-cc6c3a4c7bae

https://agui-demo.vercel.app/

The AG-UI Dojo (Building-Blocks Viewer)

The AG-UI Dojo demonstrates AG-UI’s core building blocks through simple, focused examples—each just 50-200 lines of code.

View the source code for the Dojo and all framework integrations here.

https://github.com/user-attachments/assets/c298eea8-3f39-4a94-b968-7712429b0c49

🙋🏽‍♂️ Contributing to AG-UI

Check out the Contributing guide

• Biweekly AG-UI Working Group 📅 Follow the CopilotKit Luma Events Calendar

Roadmap

Check out the AG-UI Roadmap to see what’s being built and where you can jump in.

📄 License

AG-UI is open source software licensed as MIT.