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Agent Chat UI is a Next.js application that provides a conversational interface for interacting with any LangChain agent. It supports real-time chat, tool visualization, and advanced features like time-travel debugging and state forking. Agent Chat UI works seamlessly with agents created using create_agent and provides interactive experiences for your agents with minimal setup, whether you’re running locally or in a deployed context (such as LangSmith). Agent Chat UI is open source and can be adapted to your application needs.
You can use generative UI in the Agent Chat UI. For more information, see Implement generative user interfaces with LangGraph.

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Quick start

The fastest way to get started is using the hosted version:
  1. Visit Agent Chat UI
  2. Connect your agent by entering your deployment URL or local server address
  3. Start chatting - the UI will automatically detect and render tool calls and interrupts

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Local development

For customization or local development, you can run Agent Chat UI locally: 
# Create a new Agent Chat UI project
npx create-agent-chat-app --project-name my-chat-ui
cd my-chat-ui

# Install dependencies and start
pnpm install
pnpm dev

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连接到你的智能体

Agent Chat UI 可以连接到本地和已部署的智能体。 启动 Agent Chat UI 后，你需要配置它以连接到你的智能体：
  1. 图 ID：输入你的图名称（可在 langgraph.json 文件的 graphs 部分找到）
  2. 部署 URL：你的智能体服务器的端点（例如，本地开发使用 http://localhost:2024，或已部署智能体的 URL）
  3. LangSmith API 密钥（可选）：添加你的 LangSmith API 密钥（如果使用本地智能体服务器则不需要）
配置完成后，Agent Chat UI 将自动获取并显示来自你的智能体的所有中断线程。
Agent Chat UI 内置支持渲染工具调用和工具结果消息。要自定义显示哪些消息，请参阅在聊天中隐藏消息。
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