CopilotKit

Docs · Examples · CopilotKit Intelligence · Discord

Build agent-native applications — on any framework, on any surface.

Generative UI, shared state, and human-in-the-loop workflows for React, Angular, Vue, React Native — 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 - 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 – A fully customizable chat interface that supports message streaming, tool calls, and agent responses.
• Backend Tool Rendering – Enables agents to call backend tools that return UI components rendered directly in the client.
• Generative UI – Allows agents to generate and update UI components dynamically at runtime based on user intent and agent state.
• Shared State – A synchronized state layer that both agents and UI components can read from and write to in real time.
• Human-in-the-Loop – Lets agents pause execution to request user input, confirmation, or edits before continuing.
• Self-Learning (early access) – Agents that continuously improve from user feedback via in-context reinforcement learning (CLHF).

🧩 Works With Your Stack

One agent backend. Every frontend.

Your agent logic stays the same — AG-UI handles the wire protocol, CopilotKit handles the UI layer for each framework and channel.

💬 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 — same tools, same shared state, same human-in-the-loop, no rewrite (Learn more).

• Slack – Agents as first-class Slack apps: threads, tool calls, and human-in-the-loop approvals right in the channel.
• Microsoft Teams – Bring agentic workflows to the enterprise, where your org already lives.

👉 Explore Channels →

🧠 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 – Agents automatically improve from user interactions, no model fine-tuning required.
• Automatic prompt augmentation – Agent behavior adapts based on recent interactions and outcomes.
• Per-user adaptation – Agents learn individual preferences and get better for each user over time.
• Threads & persistence – Full interaction history — generative UI, human-in-the-loop, shared state — captured across sessions.

Available via CopilotKit Cloud or self-hosted.

🔒 Early access: We're onboarding teams now.

👉 Request early access →

https://github.com/user-attachments/assets/7372b27b-8def-40fb-a11d-1f6585f556ad

What this gives you:

• CopilotKit installed – Core packages are fully set up in your app
• Provider configured – Context, state, and hooks ready to use
• Agent <> UI connected – Agents can stream actions and render UI immediately
• Deployment-ready – Your app is ready to deploy

Complete getting started guide →

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

⭐️ 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:

• Static (AG-UI Protocol)
• Declarative (A2UI)
• Open-Ended (MCP Apps & Open JSON)

Generative UI educational repo →

🖥️ AG-UI: The Agent–User Interaction Protocol

Connect agent workflows to user-facing apps, with deep partnerships and 1st-party integrations