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.
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
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
🧩 1st Party
🌐 Community
Agent Interaction Protocols
| Protocols | Status | AG-UI Resources | Integrations |
|---|
| A2A | ✅ Supported | ➡️ Docs | Partnership |
Infrastructure / Deployment
Specification (standard)
Generative UI
| Framework | Status | AG-UI Resources |
|---|
| MCP Apps | ✅ Supported | ➡️ Docs 🎮 Demos |
SDKs
Clients
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
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.
