diff --git a/packages/junior-dashboard/e2e/settings.spec.ts b/packages/junior-dashboard/e2e/settings.spec.ts
index de0f6272be..fe8d4e8b76 100644
--- a/packages/junior-dashboard/e2e/settings.spec.ts
+++ b/packages/junior-dashboard/e2e/settings.spec.ts
@@ -47,3 +47,23 @@ test("follows the system theme until the user picks one", async ({
   await page.emulateMedia({ colorScheme: "dark" });
   await expect(root).toHaveAttribute("data-theme", "dark");
 });
+
+test("turns on composer autocorrect for this browser", async ({
+  page,
+  dashboard,
+}) => {
+  await page.goto(dashboard.baseURL);
+  const composer = page.getByPlaceholder("Message Junior…");
+  await expect(composer).toHaveAttribute("autocorrect", "off");
+  await expect(composer).toHaveAttribute("autocapitalize", "off");
+  await expect(composer).toHaveAttribute("spellcheck", "false");
+
+  await page.getByRole("button", { name: /Open profile menu/ }).click();
+  await page.getByRole("link", { name: "Settings", exact: true }).click();
+  await page.getByText("Autocorrect", { exact: true }).click();
+
+  await page.goto(dashboard.baseURL);
+  await expect(composer).toHaveAttribute("autocorrect", "on");
+  await expect(composer).toHaveAttribute("autocapitalize", "sentences");
+  await expect(composer).toHaveAttribute("spellcheck", "true");
+});
diff --git a/packages/junior-dashboard/src/client/conversations/ConversationComposer.tsx b/packages/junior-dashboard/src/client/conversations/ConversationComposer.tsx
index 0e3f4025c2..588dcaaeeb 100644
--- a/packages/junior-dashboard/src/client/conversations/ConversationComposer.tsx
+++ b/packages/junior-dashboard/src/client/conversations/ConversationComposer.tsx
@@ -26,6 +26,7 @@ import {
 } from "../components/ui/tooltip";
 import { useDashboardOnline } from "../connection";
 import { cn, dashboardComposerSurfaceClass } from "../styles";
+import { useComposerAutocorrect } from "./composerAutocorrect";
 
 const DRAFT_STORAGE_PREFIX = "junior:dashboard:conversation-draft:";
 // Keep keystrokes off the storage path. Mobile Safari pays for every write.
@@ -132,6 +133,7 @@ export const ConversationComposer = memo(function ConversationComposer(
   const [dragging, setDragging] = useState(false);
   const fileInputRef = useRef<HTMLInputElement>(null);
   const online = useDashboardOnline();
+  const [autocorrect] = useComposerAutocorrect();
   const id = useId();
   const textareaRef = useRef<HTMLTextAreaElement>(null);
   const draftRef = useRef(initialDraft);
@@ -490,10 +492,11 @@ export const ConversationComposer = memo(function ConversationComposer(
         </label>
         <textarea
           // Chat is technical: ids, paths, code. Keep the keyboard chat-like
-          // (Send) and suppress browser IME assist that fights identifiers.
-          autoCapitalize="off"
+          // (Send) and suppress browser IME assist that fights identifiers,
+          // unless the user turns autocorrect on in settings.
+          autoCapitalize={autocorrect ? "sentences" : "off"}
           autoComplete="off"
-          autoCorrect="off"
+          autoCorrect={autocorrect ? "on" : "off"}
           className="min-h-12 max-h-28 w-full resize-none overflow-y-auto border-0 bg-transparent px-3 py-3 font-sans text-base leading-relaxed text-dashboard-text outline-none placeholder:text-dashboard-text-muted/65 md:min-h-14 md:max-h-[min(calc(12lh_+_1.5rem),40dvh)] md:px-4 md:py-3"
           disabled={Boolean(props.restoreDraftOnError && createPending)}
           enterKeyHint="send"
@@ -510,7 +513,7 @@ export const ConversationComposer = memo(function ConversationComposer(
           placeholder="Message Junior…"
           ref={textareaRef}
           rows={1}
-          spellCheck={false}
+          spellCheck={autocorrect}
         />
         <div
           className={cn(
diff --git a/packages/junior-dashboard/src/client/conversations/composerAutocorrect.ts b/packages/junior-dashboard/src/client/conversations/composerAutocorrect.ts
new file mode 100644
index 0000000000..df2285b4ef
--- /dev/null
+++ b/packages/junior-dashboard/src/client/conversations/composerAutocorrect.ts
@@ -0,0 +1,12 @@
+import { useLocalStorage } from "@uidotdev/usehooks";
+
+const AUTOCORRECT_STORAGE_KEY = "junior:composer:autocorrect";
+
+/**
+ * Edit the browser-only choice to let the keyboard autocorrect, spell check,
+ * and capitalize the message composer. Off by default because these change
+ * ids, paths, and code.
+ */
+export function useComposerAutocorrect() {
+  return useLocalStorage<boolean>(AUTOCORRECT_STORAGE_KEY, false);
+}
diff --git a/packages/junior-dashboard/src/client/pages/settings/SettingsPage.tsx b/packages/junior-dashboard/src/client/pages/settings/SettingsPage.tsx
index ff90f590f1..0d8ae6dbb7 100644
--- a/packages/junior-dashboard/src/client/pages/settings/SettingsPage.tsx
+++ b/packages/junior-dashboard/src/client/pages/settings/SettingsPage.tsx
@@ -12,12 +12,14 @@ import {
 import { Button } from "../../components/ui/button";
 import { Input } from "../../components/ui/input";
 import { Textarea } from "../../components/ui/textarea";
+import { Checkbox } from "../../components/ui/checkbox";
 import { Field, FieldDescription, FieldLabel } from "../../components/ui/field";
 import { RadioGroup, RadioGroupItem } from "../../components/ui/radio-group";
 import {
   useConversationStartPosition,
   type ConversationStartPosition,
 } from "../../conversations/transcriptReadPosition";
+import { useComposerAutocorrect } from "../../conversations/composerAutocorrect";
 import { InlineError } from "../../components/InlineError";
 import { Card } from "../../components/layout/Card";
 import { DashboardApiError, fetchDashboardJson, patch, put } from "../../http";
@@ -105,6 +107,7 @@ export function SettingsPage({ identity }: SettingsPageProps) {
         </Card>
       </form>
       <ConversationStartSetting />
+      <ComposerAutocorrectSetting />
       <CustomizationForm />
     </SettingsPageLayout>
   );
@@ -166,6 +169,31 @@ function ConversationStartSetting() {
   );
 }
 
+/** Let the user turn on keyboard autocorrect in the composer on this browser. */
+function ComposerAutocorrectSetting() {
+  const [autocorrect, setAutocorrect] = useComposerAutocorrect();
+  return (
+    <Card className="mt-6 mb-0" padding="md" variant="raised">
+      <h2 className="m-0 text-lg font-bold">Message box</h2>
+      <label className="mt-4 flex cursor-pointer items-start gap-3">
+        <Checkbox
+          checked={autocorrect}
+          className="mt-0.5"
+          onCheckedChange={setAutocorrect}
+        />
+        <span className="grid gap-0.5">
+          <span className="text-sm font-medium">Autocorrect</span>
+          <span className="text-xs text-dashboard-text-muted">
+            Let your keyboard correct spelling and capitalize sentences as you
+            type. This can change ids, paths, and code. This choice applies to
+            this browser.
+          </span>
+        </span>
+      </label>
+    </Card>
+  );
+}
+
 /**
  * Let the user save text that changes how the agent replies to them. The
  * server returns 404 when the app does not enable this experiment.