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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## @langchain/langgraph-sdk@1.9.15 ### Patch Changes - [#2484](https://github.com/langchain-ai/langgraphjs/pull/2484) [`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07) Thanks [@christian-bromann](https://github.com/christian-bromann)! - fix(sdk): claim in-flight slot before root pump wait for enqueue Move `#runAbort` and `isLoading` setup ahead of `waitForRootPumpReady()` so `multitaskStrategy: "enqueue"` submits in the same tick land in `queueStore` instead of bypassing the client queue. ## @langchain/angular@1.0.15 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 ## @langchain/react@1.0.15 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 ## @langchain/svelte@1.0.15 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 ## @langchain/vue@1.0.15 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 ## @example/ai-elements@0.1.30 ### Patch Changes - Updated dependencies \[]: - @langchain/react@1.0.15 ## @examples/assistant-ui-claude@0.1.30 ### Patch Changes - Updated dependencies \[]: - @langchain/react@1.0.15 ## @examples/ui-angular@0.0.40 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 - @langchain/angular@1.0.15 ## @examples/ui-multimodal@0.0.16 ### Patch Changes - Updated dependencies \[]: - @langchain/react@1.0.15 ## @examples/ui-react@0.0.16 ### Patch Changes - Updated dependencies \[[`9861f42`](https://github.com/langchain-ai/langgraphjs/commit/9861f42cc4fa23d9e80ae45a76d511d7618cda07)]: - @langchain/langgraph-sdk@1.9.15 - @langchain/react@1.0.15 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
AI Elements — Tool-Calling Agent Example
A self-contained chat interface built with AI Elements components and @langchain/react. It demonstrates how to build a production-quality agentic UI using AI Elements' composable component library.
What it shows
- Tool call rendering — each tool invocation is displayed with
Tool+ToolHeader+ToolContent+ToolInput+ToolOutput, updating live as the agent streams tool input and then the result. - Reasoning display — when the model emits reasoning tokens, a collapsible
Reasoningblock auto-opens during streaming and collapses when done. - Streaming messages —
Message+MessageContent+MessageResponserenders streaming markdown via Streamdown with full GFM support. - Loading skeleton — a
Shimmerplaceholder appears between the user's message and the first assistant token. - Conversation scroll —
Conversation+ConversationContent+ConversationScrollButtonauto-scrolls and shows a jump-to-bottom button when you scroll up. - Message actions —
MessageActions+MessageActionwith a copy button appears below the last assistant message once streaming completes. - Prompt input —
PromptInput+PromptInputBody+PromptInputTextarea+PromptInputFooter+PromptInputSubmitprovides a full-featured input bar. - Suggestions —
Suggestions+Suggestionshows preset prompts before the first message.
Agent
The backing LangGraph agent (packages/agents/src/agents/ai-elements.ts) is a createReactAgent with two simulated tools:
| Tool | Description |
|---|---|
get_weather |
Returns deterministic simulated weather data for any city |
web_search |
Returns three simulated search result objects for any query |
No external API keys are required for the tools.
Setup
Create a .env file in this folder (optional — defaults are provided):
VITE_LANGGRAPH_API_URL=http://localhost:2024 # default when running locally
VITE_LANGGRAPH_ASSISTANT_ID=ai_elements # matches langgraph.json
Run
Start the LangGraph agent server first:
bun run dev --filter=@langchain/playground-agents
Then start this preview app:
bun run dev --filter=@langchain/playground-preview-ai-elements
Open http://localhost:4600.
AI Elements components used
| Component | Source file |
|---|---|
Conversation, ConversationContent, ConversationScrollButton |
src/components/ai-elements/conversation.tsx |
Message, MessageContent, MessageResponse, MessageActions, MessageAction |
src/components/ai-elements/message.tsx |
PromptInput, PromptInputBody, PromptInputTextarea, PromptInputFooter, PromptInputSubmit |
src/components/ai-elements/prompt-input.tsx |
Tool, ToolHeader, ToolContent, ToolInput, ToolOutput |
src/components/ai-elements/tool.tsx |
Reasoning, ReasoningTrigger, ReasoningContent |
src/components/ai-elements/reasoning.tsx |
Suggestions, Suggestion |
src/components/ai-elements/suggestion.tsx |
Shimmer |
src/components/ai-elements/shimmer.tsx |
Components live in src/components/ai-elements/ and are owned by this package (shadcn/AI Elements registry style — copy-paste, not a node_modules import).
Vite path alias
AI Elements components use bare src/ imports (e.g. import { cn } from "src/lib/utils"). The vite.config.ts maps src → ./src to resolve these correctly in both dev and production builds.