diff --git a/packages/core-app-api/api-report.md b/packages/core-app-api/api-report.md
index c07ea55b67..4d867f0b37 100644
--- a/packages/core-app-api/api-report.md
+++ b/packages/core-app-api/api-report.md
@@ -228,7 +228,13 @@ export type AppRouteBinder = <
 ) => void;
 
 // @public
-export function AppRouter({ children }: { children?: ReactNode }): JSX.Element;
+export function AppRouter(props: AppRouterProps): JSX.Element;
+
+// @public
+export interface AppRouterProps {
+  // (undocumented)
+  children?: ReactNode;
+}
 
 // @public
 export class AppThemeSelector implements AppThemeApi {
diff --git a/packages/core-app-api/src/app/AppRouter.tsx b/packages/core-app-api/src/app/AppRouter.tsx
index c95bdaa7c5..b799983a3b 100644
--- a/packages/core-app-api/src/app/AppRouter.tsx
+++ b/packages/core-app-api/src/app/AppRouter.tsx
@@ -100,9 +100,8 @@ export interface AppRouterProps {
  * Until the user has successfully signed in, this component will render
  * the sign-in page. Once the user has signed-in, it will instead render
  * the app, while providing routing and route tracking for the app.
- *
  */
-export function AppRouter({ children }: { children?: ReactNode }) {
+export function AppRouter(props: AppRouterProps) {
   const { Router: RouterComponent, SignInPage: SignInPageComponent } =
     useApp().getComponents();
 
@@ -145,7 +144,7 @@ export function AppRouter({ children }: { children?: ReactNode }) {
         <RouterComponent>
           <RouteTracker routeObjects={routeObjects} />
           <Routes>
-            <Route path={mountPath} element={<>{children}</>} />
+            <Route path={mountPath} element={<>{props.children}</>} />
           </Routes>
         </RouterComponent>
       );
@@ -154,7 +153,7 @@ export function AppRouter({ children }: { children?: ReactNode }) {
     return (
       <RouterComponent basename={basePath}>
         <RouteTracker routeObjects={routeObjects} />
-        {children}
+        {props.children}
       </RouterComponent>
     );
   }
@@ -168,7 +167,7 @@ export function AppRouter({ children }: { children?: ReactNode }) {
           appIdentityProxy={appIdentityProxy}
         >
           <Routes>
-            <Route path={mountPath} element={<>{children}</>} />
+            <Route path={mountPath} element={<>{props.children}</>} />
           </Routes>
         </SignInPageWrapper>
       </RouterComponent>
@@ -182,7 +181,7 @@ export function AppRouter({ children }: { children?: ReactNode }) {
         component={SignInPageComponent}
         appIdentityProxy={appIdentityProxy}
       >
-        {children}
+        {props.children}
       </SignInPageWrapper>
     </RouterComponent>
   );
diff --git a/packages/core-app-api/src/app/index.ts b/packages/core-app-api/src/app/index.ts
index f6289a5830..156c59d0c7 100644
--- a/packages/core-app-api/src/app/index.ts
+++ b/packages/core-app-api/src/app/index.ts
@@ -15,6 +15,7 @@
  */
 
 export { AppRouter } from './AppRouter';
+export type { AppRouterProps } from './AppRouter';
 export { createSpecializedApp } from './createSpecializedApp';
 export { defaultConfigLoader } from './defaultConfigLoader';
 export * from './types';