fix cloud sql test

internal/server/api.go

@@ -278,8 +278,9 @@ func toolInvokeHandler(s *Server, w http.ResponseWriter, r *http.Request) {
 			case util.CategoryAgent:
 				// Agent Errors -> 200 OK
 				s.logger.DebugContext(ctx, fmt.Sprintf("Tool invocation agent error: %v", err))
-				_ = render.Render(w, r, newErrResponse(err, http.StatusOK))
-				return
+				res = map[string]string{
+					"error": err.Error(),
+				}
 
 			case util.CategoryServer:
 				// Server Errors -> Check the specific code inside

internal/tools/cloudsql/cloudsqlcreateusers/cloudsqlcreateusers.go

@@ -144,6 +144,10 @@ func (t Tool) Invoke(ctx context.Context, resourceMgr tools.SourceProvider, para
 
 	iamUser, _ := paramsMap["iamUser"].(bool)
 	password, _ := paramsMap["password"].(string)
+	if !iamUser && password == "" {
+		return nil, util.NewAgentError("missing 'password' parameter for non-IAM user", nil)
+	}
+
 	resp, err := source.CreateUsers(ctx, project, instance, name, password, iamUser, string(accessToken))
 	if err != nil {
 		return nil, util.ProcessGcpError(err)