diff --git a/.changeset/new-llamas-complain.md b/.changeset/new-llamas-complain.md
new file mode 100644
index 00000000000..07a0e68f80f
--- /dev/null
+++ b/.changeset/new-llamas-complain.md
@@ -0,0 +1,5 @@
+---
+'@clerk/nextjs': patch
+---
+
+Add isApiRoute to AfterAuthHandler['auth'] type
diff --git a/packages/nextjs/src/server/authMiddleware.ts b/packages/nextjs/src/server/authMiddleware.ts
index 458ac6335eb..fc63bb02963 100644
--- a/packages/nextjs/src/server/authMiddleware.ts
+++ b/packages/nextjs/src/server/authMiddleware.ts
@@ -67,7 +67,7 @@ type BeforeAuthHandler = (
 ) => NextMiddlewareResult | Promise<NextMiddlewareResult> | false | Promise<false>;
 
 type AfterAuthHandler = (
-  auth: AuthObject & { isPublicRoute: boolean },
+  auth: AuthObject & { isPublicRoute: boolean; isApiRoute: boolean },
   req: NextRequest,
   evt: NextFetchEvent,
 ) => NextMiddlewareResult | Promise<NextMiddlewareResult>;