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assistant-ui/update

既存のassistant-uiプロジェクトを最新リリースにアップグレードし、必要なマイグレーションを実行します。ユーザーが@assistant-ui/react、@assistant-ui/react-ai-sdk、ai、または@ai-sdk/reactの更新、アップグレード、バージョンアップ、マイグレーションを希望する場合、依存関係の競合やアップグレード後の型エラーが発生した場合、またはバージョンジャンプ後に名前変更されたAPIを適用する必要がある場合に使用します。

update とは？

このスキルは、assistant-uiプロジェクトのアップグレードプロセスを自動化し、主要なライブラリ（@assistant-ui/react、@assistant-ui/react-ai-sdk、ai、@ai-sdk/react）の更新、ピア依存関係の競合解決、バージョンジャンプに伴う破壊的変更の適用を支援します。 主な機能は以下の通りです。 - npm ls / npm viewを使用してインストール済みバージョンと最新バージョンを検出 - バージョンジャンプごとの破壊的変更リファレンスに基づいて自動マイグレーションを実行: - AI SDK v4/v5 → v6 - assistant-ui 0.8.x → 0.14.x - 重要なAPI変更に対応（useAssistantApi → useAui、runtime.threadList → runtime.threads、ThreadPrimitive.ViewportSlack削除、primitivesのcomponentsプロップから子レンダリング関数への変更、toDataStreamResponse → toUIMessageStreamResponse、maxSteps → stopWhen: stepCountIs(n)） - npx assistant-ui@latest upgrade、pnpm/npm add @latest、npx tsc --noEmit を実行して検証 初回インストールや新規プロジェクトスキャフォールドには setup スキルを使用してください。

対応~Claude Code~Codex CLI~Cursor
Part ofDesign & UI
npx skills add https://github.com/assistant-ui/skills/tree/main/skills/update
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ドキュメント

update は何をしますか？

既存のassistant-uiプロジェクトを最新リリースにアップグレードし、必要なマイグレーションを実行します。ユーザーが@assistant-ui/react、@assistant-ui/react-ai-sdk、ai、または@ai-sdk/reactの更新、アップグレード、バージョンアップ、マイグレーションを希望する場合、ピア依存関係の競合やアップグレード後の型エラーが発生した場合、またはバージョンジャンプ後に名前変更されたAPIを適用する必要がある場合に使用します。npm ls / npm viewを使用してインストール済みバージョンと最新バージョンを検出し、各ジャンプ（AI SDK v4/v5からv6へ、assistant-ui 0.8.xから0.14.xへ）に対する破壊的変更リファレンスに基づいて処理を振り分けます。変更内容には、useAssistantApiからuseAuiへの変更、runtime.threadListからruntime.threadsへの変更、ThreadPrimitive.ViewportSlackの削除、primitivesコンポーネントのpropsから子レンダリング関数への変更、toDataStreamResponseからtoUIMessageStreamResponseへの変更、maxStepsからstopWhen: stepCountIs(n)への変更が含まれます。

npx assistant-ui@latest upgrade
pnpm/npm add @latest
npx tsc --noEmit

を実行して検証します。初回インストールまたは新規スキャフォールド（アップグレードではない場合）には、代わりにsetupを使用してください。

Individual skills in this repo

This repo contains 7 individual skills — each has its own dedicated page.

assistant-ui/assistant-ui

Overview and router for assistant-ui, the React library for building AI chat interfaces from composable primitives. Use for high-level, cross-cutting, or architecture-overview questions: choosing packages, picking a runtime, or understanding the layered model (RuntimeCore, Runtime, context hooks, primitives) and message model. Covers the `@assistant-ui/react` core plus `@assistant-ui/react-ai-sdk`, `@assistant-ui/react-langgraph`, `assistant-stream`, and `assistant-cloud`; `AssistantRuntimeProvider`; the primitives `ThreadPrimitive`, `MessagePrimitive`, `ComposerPrimitive`; the hooks `useAui`, `useAuiState`, `useAuiEvent`; and runtime selection across `useChatRuntime`, `useExternalStoreRuntime`, `useLangGraphRuntime`, `useLocalRuntime`. For a specific area route to a focused sibling instead: setup, runtime, primitives, tools, streaming, cloud, thread-list, or update. Not for hands-on tasks already owned by those siblings.

assistant-ui/primitives

Builds and customizes assistant-ui chat UI from composable, unstyled @assistant-ui/react primitives that follow Radix-style part composition. Use when assembling or styling a custom Thread, Composer, message rendering, action bar, or branch picker from building blocks: ThreadPrimitive (.Root, .Viewport, .Messages, .Empty, .ScrollToBottom), ComposerPrimitive (.Input, .Send, .Cancel, .Attachments), MessagePrimitive (.Parts/.Content, .Error), ActionBarPrimitive (.Copy, .Edit, .Reload, .Speak, feedback, .ExportMarkdown), BranchPickerPrimitive, AttachmentPrimitive, ThreadListPrimitive, ThreadListItemPrimitive. Covers MessagePrimitive.Parts children render functions for text, image, reasoning, and tool-call parts; conditional rendering with AuiIf (deprecated .If); and gotchas like wrapping in AssistantRuntimeProvider and adding className since primitives ship unstyled. For prebuilt drop-in UI and scaffolding use setup; for multi-thread sidebar behavior use thread-list.

assistant-ui/runtime

Guide for assistant-ui runtime system and state management. Use when working with runtimes, accessing state, or managing thread/message data.

assistant-ui/setup

Installs and configures assistant-ui in a project via the CLI, and picks the right runtime for a backend. Use for first-time install, scaffold, or config: `npx assistant-ui@latest create my-app` (templates default, minimal, cloud, cloud-clerk, langgraph, mcp), `npx assistant-ui@latest init [--yes] [--overwrite]` in an existing Next.js app, or `npx assistant-ui@latest add` registry components (markdown-text, thread-list). Also use to choose a runtime hook for a backend: useChatRuntime (AI SDK), useLangGraphRuntime, useAgUiRuntime, useA2ARuntime, useLocalRuntime (custom streaming API), or useExternalStoreRuntime (Redux/Zustand). Covers Vite/TanStack Start setup, shadcn styling, the playground --preset flag, and avoiding the deprecated @assistant-ui/styles and @assistant-ui/react-ui packages. For upgrading an existing install or post-upgrade breakage use update; for building UI from raw parts use primitives.

assistant-ui/streaming

Streaming backends and wire protocols for assistant-ui via the assistant-stream package. Use when building a custom (non-AI-SDK) streaming endpoint with createAssistantStreamResponse or createAssistantStreamController, emitting parts through appendText/appendReasoning/appendSource/appendFile/addToolCallPart and setResponse; choosing between the AI SDK Data Stream format (toUIMessageStreamResponse) and the native Assistant Transport format; encoding or decoding streams with DataStreamEncoder/DataStreamDecoder, AssistantTransportEncoder/AssistantTransportDecoder, PlainTextEncoder, or UIMessageStreamDecoder; or wiring streamed chunks into useLocalRuntime or useChatRuntime. Use specifically for debugging stream wire issues: text-delta, part-start, result events, text/event-stream content-type, SSE format, tool calls not rendering, or partial text not showing. For general non-stream debugging route to the relevant focused skill, not the parent overview.

assistant-ui/thread-list

Implements multi-thread (conversation history) management in assistant-ui apps: rendering the prebuilt `ThreadList` next to `Thread`, or building a custom sidebar with `ThreadListPrimitive` and `ThreadListItemPrimitive` (Root, New, Items, Trigger, Title, Archive, Unarchive, Delete). Covers thread CRUD through the `useAui()`/`useAuiState()` API: `switchToThread`, `switchToNewThread`, and per item `rename`, `archive`, `unarchive`, `delete`, `generateTitle`, `initialize`, plus reading `s.threads.threadIds`/`archivedThreadIds`/`mainThreadId`. Includes cloud-backed persistence via `useChatRuntime` + `AssistantCloud` and a local `useRemoteThreadListRuntime` + `InMemoryThreadListAdapter` path. Use when a user wants a thread list/sidebar, switching, searching, sorting, drag-and-drop, or renaming/archiving/deleting conversations. For single-thread state, messages, or composer use runtime; for cloud auth/persistence setup use cloud.

assistant-ui/tools

Registers LLM tools and renders custom tool-call UI in assistant-ui (@assistant-ui/react). Use when adding frontend-only tools with makeAssistantTool / useAssistantTool (browser actions like clipboard, navigation, localStorage, async-generator streaming, AbortSignal), rendering backend AI SDK tool() calls with makeAssistantToolUI / useAssistantToolUI (status.type running/complete/incomplete/requires-action, args, result, artifact via ToolCallMessagePartProps), building generative UI from tool results, or implementing human-in-the-loop and approval flows (addResult, resume with context.human(), respondToApproval for server-side needsApproval gates). Covers registering tool components inside AssistantRuntimeProvider and the case-sensitive toolName matching that connects a tool to its UI. Reach for this when tool UI is not rendering, a tool is not being called, or a result is not showing.

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