diff --git a/specification/eventgrid/Azure.Messaging.EventGrid/main.tsp b/specification/eventgrid/Azure.Messaging.EventGrid/main.tsp
index e1a828eb56e5..d507d0a4e026 100644
--- a/specification/eventgrid/Azure.Messaging.EventGrid/main.tsp
+++ b/specification/eventgrid/Azure.Messaging.EventGrid/main.tsp
@@ -9,11 +9,7 @@ enum ServiceApiVersions {
 }
 
 @useAuth(
-  ApiKeyAuth<ApiKeyLocation.header, "SharedAccessKey"> | OAuth2Auth<[{
-    type: OAuth2FlowType.implicit,
-    authorizationUrl: "https://login.microsoftonline.com/common/oauth2/v2.0/authorize",
-    scopes: ["https://eventgrid.azure.net/.default"],
-  }]>
+  ApiKeyAuth<ApiKeyLocation.header, "SharedAccessKey">
 )
 
 @service({
diff --git a/specification/eventgrid/Azure.Messaging.EventGrid/tspconfig.yaml b/specification/eventgrid/Azure.Messaging.EventGrid/tspconfig.yaml
new file mode 100644
index 000000000000..d99c4a42088c
--- /dev/null
+++ b/specification/eventgrid/Azure.Messaging.EventGrid/tspconfig.yaml
@@ -0,0 +1,6 @@
+options:
+  # Uncomment this line and add "@azure-tools/typespec-csharp" to your package.json to generate C# code
+  "@azure-tools/typespec-csharp":
+    model-namespace: false
+    generate-convenience-methods: false
+    namespace: Azure.Messaging.EventGrid.Namespaces
\ No newline at end of file