The Frontend Stack for Agents & Generative UI. React, Angular, Mobile, Slack, and more. Makers of the AG-UI Protocol
CopilotKit
Docs ยท Examples ยท CopilotKit Intelligence ยท Discord
Build agent-native applications โ on any framework, on any surface.
Generative UI, shared state, and human-in-the-loop workflows for React, Angular, Vue, React Native โ and in Slack and Microsoft Teams.
What is CopilotKit?
CopilotKit is a best-in-class SDK for building full-stack agentic applications, Generative UI, and chat applications.
What started as a React library is now the horizontal layer between your agents and your users: the same agent can power your web app, your mobile app, and your team's Slack or Microsoft Teams workspace.
We are the company behind the AG-UI Protocol โ adopted by Google, LangChain, AWS, Microsoft, Mastra, PydanticAI, and more!
Quick Start
Up and running in under five minutes. All you need is an LLM key (OpenAI, Anthropic, Gemini, etc.).
npx copilotkit@latest create
Agent Skills
CopilotKit ships agent skills that teach your coding agent (Claude Code, Codex, Cursor, Gemini, and others) how to set up, build with, integrate, debug, and upgrade CopilotKit.
Install them into any project directory:
npx copilotkit@latest skills install
Run it again any time to refresh to the latest skills.
Bring Your App to Life
https://github.com/user-attachments/assets/72b7b4f3-b6e7-460c-a932-5746fe3c8db3
Features:
- Chat UI โ A fully customizable chat interface that supports message streaming, tool calls, and agent responses.
- Backend Tool Rendering โ Enables agents to call backend tools that return UI components rendered directly in the client.
- Generative UI โ Allows agents to generate and update UI components dynamically at runtime based on user intent and agent state.
- Shared State โ A synchronized state layer that both agents and UI components can read from and write to in real time.
- Human-in-the-Loop โ Lets agents pause execution to request user input, confirmation, or edits before continuing.
- Self-Learning (early access) โ Agents that continuously improve from user feedback via in-context reinforcement learning (CLHF).
๐งฉ Works With Your Stack
One agent backend. Every frontend.
| Platform | Status | Get Started |
|---|---|---|
| โ๏ธ React / Next.js | โ GA | Quickstart |
| ๐ ฐ๏ธ Angular | โ Supported | Source Code & Quickstart |
| ๐ Vue | โ Supported | Source Code - Quickstart coming soon |
| ๐ฑ React Native | โ Supported | Quickstart |
| ๐ฌ Slack / Microsoft Teams | โ Supported | Channels ยท Quickstart |
| ๐ Discord / WhatsApp / Telegram / Google Chat / iMessage / SMS | ๐ก Coming soon | Channels |
Your agent logic stays the same โ AG-UI handles the wire protocol, CopilotKit handles the UI layer for each framework and channel.
๐ฌ Channels: One Agent, Every Chat App
The Channels SDK takes the agent you already built and drops it into the chat apps your users live in โ same tools, same shared state, same human-in-the-loop, no rewrite (Learn more).
- Slack โ Agents as first-class Slack apps: threads, tool calls, and human-in-the-loop approvals right in the channel.
- Microsoft Teams โ Bring agentic workflows to the enterprise, where your org already lives.
๐ Explore Channels โ
๐ง Self-Learning Agents
Improve your product by learning over time.
With Continuous Learning from Human Feedback (CLHF), part of CopilotKit Intelligence, agents improve with every interaction:
- In-context reinforcement learning โ Agents automatically improve from user interactions, no model fine-tuning required.
- Automatic prompt augmentation โ Agent behavior adapts based on recent interactions and outcomes.
- Per-user adaptation โ Agents learn individual preferences and get better for each user over time.
- Threads & persistence โ Full interaction history โ generative UI, human-in-the-loop, shared state โ captured across sessions.
Available via CopilotKit Cloud or self-hosted.
๐ Early access: We're onboarding teams now.
https://github.com/user-attachments/assets/7372b27b-8def-40fb-a11d-1f6585f556ad
What this gives you:
- CopilotKit installed โ Core packages are fully set up in your app
- Provider configured โ Context, state, and hooks ready to use
- Agent <> UI connected โ Agents can stream actions and render UI immediately
- Deployment-ready โ Your app is ready to deploy
Complete getting started guide โ
How it works:
CopilotKit connects your UI, agents, and tools into a single interaction loop.
This enables:
- Agents that ask users for input
- Tools that render UI
- Stateful workflows across steps and sessions
- One agent, deployed across web, mobile, and chat platforms
โญ๏ธ useAgent Hook
The useAgent hook sits directly on AG-UI, giving you full programmatic control over the agent connection.
// Programmatically access and control your agents
const { agent } = useAgent({ agentId: "my_agent" });
// Render and update your agent's state
return <div>
<h1>{agent.state.city}</h1>
<button onClick={() => agent.setState({ city: "NYC" })}>
Set City
</button>
</div>
Check out the useAgent docs to learn more.
https://github.com/user-attachments/assets/67928406-8abc-49a1-a851-98018b52174f
Generative UI
Generative UI is a core CopilotKit pattern that allows agents to dynamically render UI as part of their workflow.
https://github.com/user-attachments/assets/3cfacac0-4ffd-457a-96f9-d7951e4ab7b6
Compare the Three Types
Explore:
Generative UI educational repo โ
๐ฅ๏ธ AG-UI: The AgentโUser Interaction Protocol
Connect agent workflows to user-facing apps, with deep partnerships and 1st-party integrations across the agentic stackโincluding LangChain, CrewAI, Mastra, PydanticAI, and more.
npx create-ag-ui-app my-agent-app
๐ค Community
Have questions or need help?
Join our Discord โRead the Docs โ
Try CopilotKit Intelligence โ
Stay up to date with our latest releases!
Follow us on LinkedIn โFollow us on X โ
๐๐ฝโโ๏ธ Contributing
Thanks for your interest in contributing to CopilotKit! ๐
We value all contributions, whether it's through code, documentation, creating demo apps, or just spreading the word.
Here are a few useful resources to help you get started:
For code contributions, CONTRIBUTING.md.
For documentation-related contributions, check out the documentation contributions guide.
Want to contribute but not sure how? Join our Discord and we'll help you out!
๐ License
This repository's source code is available under the MIT License.