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Vercel's AI SDK: the TypeScript toolkit for building AI apps and agents with any model provider
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ガイドを見る →ag-uiは、ag-ui-protocolが公開しているオープンソースの開発ツールプロジェクトです（GitHub: ag-ui-protocol/ag-ui）。GitHubスターは16,391、フォークは1,492で、MITライセンスの下で公開されています。GitHubでの最終更新は2026年10月8日です。
Open, event-based protocol that connects AI agents to user-facing apps with streaming and shared state.
Pick the interaction you need first: streaming chat, shared state between agent and UI, frontend tool calls, or human-in-the-loop approval steps.
Scaffold a new AG-UI application with the create-ag-ui-app tool, or add AG-UI to an existing agent built on a supported framework such as LangGraph or CrewAI.
Connect your agent backend to the frontend over a transport such as SSE or WebSockets, using the reference HTTP implementation and the standard event types.
Open the AG-UI Dojo examples to see each building block in 50-200 lines of code, then adapt one to your own agent and UI.
Agent backends emit events compatible with roughly 16 standard AG-UI event types, so any compliant frontend can render agent runs consistently.
Streaming chat is a core feature, letting users watch tokens and progress as the agent works rather than waiting for a final answer.
Application state is synchronized in both directions, so the agent and the user can both read and update a shared view of the work.
The protocol supports generative UI and structured messages, letting agents render rich components instead of plain text only.
Agents can call tools that live in the frontend, so an agent can trigger actions in the app the user is already looking at.
Built for collaboration patterns where a person reviews, edits or approves agent steps before the agent continues.
Clone the protocol repo to explore the spec, SDKs and the Dojo example apps locally.
git clone https://github.com/ag-ui-protocol/ag-ui.git
cd ag-uiCreate a fresh AG-UI application in seconds with the official scaffolding command from the README.
npx create-ag-ui-app my-agent-appRun or browse the Dojo building-block examples in the repo to see each AG-UI feature in a small, focused app.
cd apps/dojo # see README for the exact commandThe ag-ui-protocol open-source organization maintains it; it grew out of CopilotKit's agent-interactivity work and has first-party and community contributors across many frameworks.
Yes. It is open source under the MIT license, which permits commercial use, modification and distribution.
AG-UI itself is just a protocol and needs no key. The agent you connect behind it will use whatever model provider you choose, which may require your own API key.
They are complementary: MCP gives agents tools, A2A lets agents talk to other agents, and AG-UI brings agents into user-facing applications.
Run npx create-ag-ui-app my-agent-app, or open the AG-UI Dojo to copy a small working example for your framework.
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