Add context-aware artifacts

package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@langchain/core": "^0.3.44",
     "@langchain/langgraph": "^0.2.63",
-    "@langchain/langgraph-sdk": "^0.0.66",
+    "@langchain/langgraph-sdk": "^0.0.73",
     "@radix-ui/react-avatar": "^1.1.3",
     "@radix-ui/react-dialog": "^1.1.6",
     "@radix-ui/react-label": "^2.1.2",

pnpm-lock.yaml

@@ -15,8 +15,8 @@ importers:
         specifier: ^0.2.63
         version: 0.2.63(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)(zod-to-json-schema@3.24.3(zod@3.24.2))
       '@langchain/langgraph-sdk':
-        specifier: ^0.0.66
-        version: 0.0.66(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)
+        specifier: ^0.0.73
+        version: 0.0.73(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)
       '@radix-ui/react-avatar':
         specifier: ^1.1.3
         version: 1.1.3(@types/react-dom@19.0.4(@types/react@19.0.10))(@types/react@19.0.10)(react-dom@19.0.0(react@19.0.0))(react@19.0.0)
@@ -545,8 +545,8 @@ packages:
     peerDependencies:
       '@langchain/core': '>=0.2.31 <0.4.0'
 
-  '@langchain/langgraph-sdk@0.0.66':
-    resolution: {integrity: sha512-l0V4yfKXhHaTRK/1bKMfZ14k3wWZu27DWTlCUnbYJvdo7os5srhONgPCOqQgpazhi5EhXbW2EVgeu/wLW2zH6Q==}
+  '@langchain/langgraph-sdk@0.0.73':
+    resolution: {integrity: sha512-V3E7Bd1KNcTpnEglZqKpnQtth62WHf+Dxq5V+0CqMxbzPHnW9I4eynCO4c1/HSY/rHgEtvgj7fMvCAb6I5R+lQ==}
     peerDependencies:
       '@langchain/core': '>=0.2.31 <0.4.0'
       react: ^18 || ^19
@@ -2595,6 +2595,7 @@ packages:
   node-domexception@1.0.0:
     resolution: {integrity: sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==}
     engines: {node: '>=10.5.0'}
+    deprecated: Use your platform's native DOMException instead
 
   node-fetch@2.7.0:
     resolution: {integrity: sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==}
@@ -3699,7 +3700,7 @@ snapshots:
       '@langchain/core': 0.3.44(openai@4.85.4(zod@3.24.2))
       uuid: 10.0.0
 
-  '@langchain/langgraph-sdk@0.0.66(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)':
+  '@langchain/langgraph-sdk@0.0.73(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)':
     dependencies:
       '@types/json-schema': 7.0.15
       p-queue: 6.6.2
@@ -3713,7 +3714,7 @@ snapshots:
     dependencies:
       '@langchain/core': 0.3.44(openai@4.85.4(zod@3.24.2))
       '@langchain/langgraph-checkpoint': 0.0.16(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))
-      '@langchain/langgraph-sdk': 0.0.66(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)
+      '@langchain/langgraph-sdk': 0.0.73(@langchain/core@0.3.44(openai@4.85.4(zod@3.24.2)))(react@19.0.0)
       uuid: 10.0.0
       zod: 3.24.2
     optionalDependencies:

src/app/page.tsx

@@ -3,6 +3,7 @@
 import { Thread } from "@/components/thread";
 import { StreamProvider } from "@/providers/Stream";
 import { ThreadProvider } from "@/providers/Thread";
+import { ArtifactProvider } from "@/components/thread/artifact";
 import { Toaster } from "@/components/ui/sonner";
 import React from "react";
 
@@ -12,7 +13,9 @@ export default function DemoPage(): React.ReactNode {
       <Toaster />
       <ThreadProvider>
         <StreamProvider>
+          <ArtifactProvider>
             <Thread />
+          </ArtifactProvider>
         </StreamProvider>
       </ThreadProvider>
     </React.Suspense>

src/components/thread/artifact.tsx

@@ -20,6 +20,8 @@ const ArtifactSlotContext = createContext<{
 
   title: [HTMLElement | null, Setter<HTMLElement | null>];
   content: [HTMLElement | null, Setter<HTMLElement | null>];
+
+  context: [Record<string, unknown>, Setter<Record<string, unknown>>];
 }>(null!);
 
 const ArtifactFill = (props: {
@@ -88,15 +90,18 @@ export function ArtifactTitle(props: HTMLAttributes<HTMLDivElement>) {
   );
 }
 
-export function ArtifactContext(props: { children?: ReactNode }) {
+export function ArtifactProvider(props: { children?: ReactNode }) {
   const content = useState<HTMLElement | null>(null);
   const title = useState<HTMLElement | null>(null);
 
   const open = useState<string | null>(null);
   const mounted = useState<string | null>(null);
+  const context = useState<Record<string, unknown>>({});
 
   return (
-    <ArtifactSlotContext.Provider value={{ open, mounted, title, content }}>
+    <ArtifactSlotContext.Provider
+      value={{ open, mounted, title, content, context }}
+    >
       {props.children}
     </ArtifactSlotContext.Provider>
   );
@@ -106,6 +111,7 @@ export function useArtifact() {
   const id = useId();
   const context = useContext(ArtifactSlotContext);
   const [ctxOpen, ctxSetOpen] = context.open;
+  const [ctxContext, ctxSetContext] = context.context;
   const [, ctxSetMounted] = context.mounted;
 
   const open = ctxOpen === id;
@@ -136,17 +142,26 @@ export function useArtifact() {
     [id],
   );
 
-  return { open, setOpen, content: ArtifactContent };
+  return {
+    open,
+    setOpen,
+    context: ctxContext,
+    setContext: ctxSetContext,
+    content: ArtifactContent,
+  };
 }
 
-export function useAnyArtifactOpen() {
+export function useArtifactOpen() {
   const context = useContext(ArtifactSlotContext);
   const [ctxOpen, setCtxOpen] = context.open;
 
   const open = ctxOpen !== null;
-  const onClose = useCallback(() => {
-    setCtxOpen(null);
-  }, [setCtxOpen]);
+  const onClose = useCallback(() => setCtxOpen(null), [setCtxOpen]);
 
   return [open, onClose] as const;
 }
+
+export function useArtifactContext() {
+  const context = useContext(ArtifactSlotContext);
+  return context.context;
+}

src/components/thread/index.tsx

@@ -37,10 +37,10 @@ import {
   TooltipTrigger,
 } from "../ui/tooltip";
 import {
-  useAnyArtifactOpen,
+  useArtifactOpen,
   ArtifactContent,
-  ArtifactContext,
   ArtifactTitle,
+  useArtifactContext,
 } from "./artifact";
 
 function StickyToBottomContent(props: {
@@ -108,38 +108,11 @@ function OpenGitHubRepo() {
   );
 }
 
-function ArtifactLayout(props: { children: ReactNode }) {
-  const [open, onClose] = useAnyArtifactOpen();
-
-  return (
-    <div
-      className={cn(
-        "grid w-full grid-cols-[1fr_0fr] transition-all duration-500",
-        open && "grid-cols-[3fr_2fr]",
-      )}
-    >
-      {props.children}
-
-      <div className="relative flex flex-col border-l">
-        <div className="absolute inset-0 flex min-w-[30vw] flex-col">
-          <div className="grid grid-cols-[1fr_auto] border-b p-4">
-            <ArtifactTitle className="truncate overflow-hidden" />
-            <button
-              onClick={onClose}
-              className="cursor-pointer"
-            >
-              <XIcon className="size-5" />
-            </button>
-          </div>
-          <ArtifactContent className="relative flex-grow" />
-        </div>
-      </div>
-    </div>
-  );
-}
-
 export function Thread() {
-  const [threadId, setThreadId] = useQueryState("threadId");
+  const [artifactContext, setArtifactContext] = useArtifactContext();
+  const [artifactOpen, closeArtifact] = useArtifactOpen();
+
+  const [threadId, _setThreadId] = useQueryState("threadId");
   const [chatHistoryOpen, setChatHistoryOpen] = useQueryState(
     "chatHistoryOpen",
     parseAsBoolean.withDefault(false),
@@ -158,6 +131,14 @@ export function Thread() {
 
   const lastError = useRef<string | undefined>(undefined);
 
+  const setThreadId = (id: string | null) => {
+    _setThreadId(id);
+
+    // close artifact and reset artifact context
+    closeArtifact();
+    setArtifactContext({});
+  };
+
   useEffect(() => {
     if (!stream.error) {
       lastError.current = undefined;
@@ -212,12 +193,17 @@ export function Thread() {
     };
 
     const toolMessages = ensureToolCallsHaveResponses(stream.messages);
+
+    const context =
+      Object.keys(artifactContext).length > 0 ? artifactContext : undefined;
+
     stream.submit(
-      { messages: [...toolMessages, newHumanMessage] },
+      { messages: [...toolMessages, newHumanMessage], context },
       {
         streamMode: ["values"],
         optimisticValues: (prev) => ({
           ...prev,
+          context,
           messages: [
             ...(prev.messages ?? []),
             ...toolMessages,
@@ -274,8 +260,12 @@ export function Thread() {
         </motion.div>
       </div>
 
-      <ArtifactContext>
-        <ArtifactLayout>
+      <div
+        className={cn(
+          "grid w-full grid-cols-[1fr_0fr] transition-all duration-500",
+          artifactOpen && "grid-cols-[3fr_2fr]",
+        )}
+      >
         <motion.div
           className={cn(
             "relative flex min-w-0 flex-1 flex-col overflow-hidden",
@@ -499,8 +489,21 @@ export function Thread() {
             />
           </StickToBottom>
         </motion.div>
-        </ArtifactLayout>
-      </ArtifactContext>
+        <div className="relative flex flex-col border-l">
+          <div className="absolute inset-0 flex min-w-[30vw] flex-col">
+            <div className="grid grid-cols-[1fr_auto] border-b p-4">
+              <ArtifactTitle className="truncate overflow-hidden" />
+              <button
+                onClick={closeArtifact}
+                className="cursor-pointer"
+              >
+                <XIcon className="size-5" />
+              </button>
+            </div>
+            <ArtifactContent className="relative flex-grow" />
+          </div>
+        </div>
+      </div>
     </div>
   );
 }

src/providers/Stream.tsx

@@ -33,6 +33,7 @@ const useTypedStream = useStream<
     UpdateType: {
       messages?: Message[] | Message | string;
       ui?: (UIMessage | RemoveUIMessage)[] | UIMessage | RemoveUIMessage;
+      context?: Record<string, unknown>;
     };
     CustomEventType: UIMessage | RemoveUIMessage;
   }