diff --git a/src/stagehandStore.ts b/src/stagehandStore.ts
index 91b0fe6..e65b6c7 100644
--- a/src/stagehandStore.ts
+++ b/src/stagehandStore.ts
@@ -50,7 +50,7 @@ export const createStagehandInstance = async (
         advancedStealth: config.advancedStealth ?? undefined,
       },
       userMetadata: {
-        mcp: true,
+        mcp: "true",
       },
     },
     logger: (logLine) => {