diff --git a/WelsonJS.Augmented/WelsonJS.Launcher/ApiEndpoints/JsonRpc2.cs b/WelsonJS.Augmented/WelsonJS.Launcher/ApiEndpoints/JsonRpc2.cs
index 5964ee5..05aded7 100644
--- a/WelsonJS.Augmented/WelsonJS.Launcher/ApiEndpoints/JsonRpc2.cs
+++ b/WelsonJS.Augmented/WelsonJS.Launcher/ApiEndpoints/JsonRpc2.cs
@@ -74,7 +74,7 @@ namespace WelsonJS.Launcher.ApiEndpoints
             {
                 await dispatcher.HandleAsync(
                     body,
-                    async (method, ser, ct) =>
+                    async (method, id, ser, ct) =>
                     {
                         switch (method)
                         {
@@ -83,7 +83,7 @@ namespace WelsonJS.Launcher.ApiEndpoints
                                 break;
 
                             case "tools/call":
-                                // TODO: implement tool calling
+                                await ResolveToolsCall(ser.ExtractFrom(id, "params", "name"));
                                 break;
                         }
 
@@ -92,5 +92,10 @@ namespace WelsonJS.Launcher.ApiEndpoints
                     cts.Token);
             }
         }
+
+        private async Task ResolveToolsCall(string toolsName)
+        {
+            // TODO: ex) get_weather
+        }
     }
 }
diff --git a/WelsonJS.Augmented/WelsonJS.Launcher/JsonRpc2Dispatcher.cs b/WelsonJS.Augmented/WelsonJS.Launcher/JsonRpc2Dispatcher.cs
index 4f5695b..18341f3 100644
--- a/WelsonJS.Augmented/WelsonJS.Launcher/JsonRpc2Dispatcher.cs
+++ b/WelsonJS.Augmented/WelsonJS.Launcher/JsonRpc2Dispatcher.cs
@@ -62,7 +62,7 @@ namespace WelsonJS.Launcher
                         Method = method
                     };
 
-                    return await dispatchMethodAsync(req.Method, ser, ct);
+                    return await dispatchMethodAsync(req.Method, id, ser, ct);
                 }
                 catch (JsonRpc2Exception)
                 {