Merge branch 'main' into add_env

README.md

@@ -65,3 +65,60 @@ To use these variables:
 3. Restart the application
 
 When these environment variables are set, the application will use them instead of showing the setup form.
+
+
+## Hiding Messages in the Chat
+
+You can control the visibility of messages within the Agent Chat UI in two main ways:
+
+**1. Prevent Live Streaming:**
+
+To stop messages from being displayed _as they stream_ from an LLM call, add the `langsmith:nostream` tag to the chat model's configuration. The UI normally uses `on_chat_model_stream` events to render streaming messages; this tag prevents those events from being emitted for the tagged model.
+
+_Python Example:_
+
+```python
+from langchain_anthropic import ChatAnthropic
+
+# Add tags via the .with_config method
+model = ChatAnthropic().with_config(
+    config={"tags": ["langsmith:nostream"]}
+)
+```
+
+_TypeScript Example:_
+
+```typescript
+import { ChatAnthropic } from "@langchain/anthropic";
+
+const model = new ChatAnthropic()
+  // Add tags via the .withConfig method
+  .withConfig({ tags: ["langsmith:nostream"] });
+```
+
+**Note:** Even if streaming is hidden this way, the message will still appear after the LLM call completes if it's saved to the graph's state without further modification.
+
+**2. Hide Messages Permanently:**
+
+To ensure a message is _never_ displayed in the chat UI (neither during streaming nor after being saved to state), prefix its `id` field with `do-not-render-` _before_ adding it to the graph's state, along with adding the `langsmith:do-not-render` tag to the chat model's configuration. The UI explicitly filters out any message whose `id` starts with this prefix.
+
+_Python Example:_
+
+```python
+result = model.invoke([messages])
+# Prefix the ID before saving to state
+result.id = f"do-not-render-{result.id}"
+return {"messages": [result]}
+```
+
+_TypeScript Example:_
+
+```typescript
+const result = await model.invoke([messages]);
+// Prefix the ID before saving to state
+result.id = `do-not-render-${result.id}`;
+return { messages: [result] };
+```
+
+This approach guarantees the message remains completely hidden from the user interface.
+

src/components/icons/github.tsx

@@ -0,0 +1,12 @@
+export const GitHubSVG = ({ width = "100%", height = "100%" }) => (
+  <svg
+    role="img"
+    viewBox="0 0 24 24"
+    width={width}
+    height={height}
+    xmlns="http://www.w3.org/2000/svg"
+  >
+    <title>GitHub</title>
+    <path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12" />
+  </svg>
+);

src/components/thread/index.tsx

@@ -28,6 +28,13 @@ import { toast } from "sonner";
 import { useMediaQuery } from "@/hooks/useMediaQuery";
 import { Label } from "../ui/label";
 import { Switch } from "../ui/switch";
+import { GitHubSVG } from "../icons/github";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipProvider,
+  TooltipTrigger,
+} from "../ui/tooltip";
 
 function StickyToBottomContent(props: {
   content: ReactNode;
@@ -67,6 +74,27 @@ function ScrollToBottom(props: { className?: string }) {
   );
 }
 
+function OpenGitHubRepo() {
+  return (
+    <TooltipProvider>
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <a
+            href="https://github.com/langchain-ai/agent-chat-ui"
+            target="_blank"
+            className="flex items-center justify-center"
+          >
+            <GitHubSVG width="24" height="24" />
+          </a>
+        </TooltipTrigger>
+        <TooltipContent side="left">
+          <p>Open GitHub repo</p>
+        </TooltipContent>
+      </Tooltip>
+    </TooltipProvider>
+  );
+}
+
 export function Thread() {
   const [threadId, setThreadId] = useQueryState("threadId");
   const [chatHistoryOpen, setChatHistoryOpen] = useQueryState(
@@ -218,19 +246,24 @@ export function Thread() {
       >
         {!chatStarted && (
           <div className="absolute top-0 left-0 w-full flex items-center justify-between gap-3 p-2 pl-4 z-10">
-            {(!chatHistoryOpen || !isLargeScreen) && (
+            <div>
-              <Button
+              {(!chatHistoryOpen || !isLargeScreen) && (
-                className="hover:bg-gray-100"
+                <Button
-                variant="ghost"
+                  className="hover:bg-gray-100"
-                onClick={() => setChatHistoryOpen((p) => !p)}
+                  variant="ghost"
-              >
+                  onClick={() => setChatHistoryOpen((p) => !p)}
-                {chatHistoryOpen ? (
+                >
-                  <PanelRightOpen className="size-5" />
+                  {chatHistoryOpen ? (
-                ) : (
+                    <PanelRightOpen className="size-5" />
-                  <PanelRightClose className="size-5" />
+                  ) : (
-                )}
+                    <PanelRightClose className="size-5" />
-              </Button>
+                  )}
-            )}
+                </Button>
+              )}
+            </div>
+            <div className="absolute top-2 right-4 flex items-center">
+              <OpenGitHubRepo />
+            </div>
           </div>
         )}
         {chatStarted && (
@@ -270,15 +303,20 @@ export function Thread() {
               </motion.button>
             </div>
 
-            <TooltipIconButton
+            <div className="flex items-center gap-4">
-              size="lg"
+              <div className="flex items-center">
-              className="p-4"
+                <OpenGitHubRepo />
-              tooltip="New thread"
+              </div>
-              variant="ghost"
+              <TooltipIconButton
-              onClick={() => setThreadId(null)}
+                size="lg"
-            >
+                className="p-4"
-              <SquarePen className="size-5" />
+                tooltip="New thread"
-            </TooltipIconButton>
+                variant="ghost"
+                onClick={() => setThreadId(null)}
+              >
+                <SquarePen className="size-5" />
+              </TooltipIconButton>
+            </div>
 
             <div className="absolute inset-x-0 top-full h-5 bg-gradient-to-b from-background to-background/0" />
           </div>