ag-ui-protocol/ag-ui

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

Useful Links:

• 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.