diff --git a/tools/@aws-cdk/cfn-guard-custom-rules-tool/action.yml b/tools/@aws-cdk/cfn-guard-custom-rules-tool/action.yml
index cd896594095de..b5408a70747f7 100644
--- a/tools/@aws-cdk/cfn-guard-custom-rules-tool/action.yml
+++ b/tools/@aws-cdk/cfn-guard-custom-rules-tool/action.yml
@@ -6,9 +6,12 @@ inputs:
   data_directory:
     description: "Path to CloudFormation templates"
     required: true
+  rule_set_path:
+    description: "Path to a single .guard file locally"
+    required: false
   rule_set_url:
     description: "URL to a single .guard file on GitHub"
-    required: true
+    required: false
   show_summary:
     description: "cfn-guard summary output. Options are all, pass, fail, skip or none"
     required: false
diff --git a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/CMCMK-Stack.template.json b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/CMCMK-Stack.template.json
index debd913dba322..41093f22e2f09 100644
--- a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/CMCMK-Stack.template.json
+++ b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/CMCMK-Stack.template.json
@@ -9,7 +9,7 @@
        "Action": "sts:AssumeRole",
        "Effect": "Allow",
        "Principal": {
-        "Service": "lambda.amazonaws.com"
+        "Service": "lambda.amazonaws.com"  
        }
       }
      ],
diff --git a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/StagingStack-default-resourcesmax-ACCOUNT-REGION.template.json b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/StagingStack-default-resourcesmax-ACCOUNT-REGION.template.json
index 057870eec4d5d..feced0a084881 100644
--- a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/StagingStack-default-resourcesmax-ACCOUNT-REGION.template.json
+++ b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/StagingStack-default-resourcesmax-ACCOUNT-REGION.template.json
@@ -16,7 +16,7 @@
           [
            "arn:",
            {
-            "Ref": "AWS::Partition"
+            "Ref": "AWS::Partition"  
            },
            ":iam::",
            {
diff --git a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/codepipelinenestedstackPipelineCrossRegionStack37C990C7.nested.template.json b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/codepipelinenestedstackPipelineCrossRegionStack37C990C7.nested.template.json
index 3d81160451042..f0474e10776d7 100644
--- a/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/codepipelinenestedstackPipelineCrossRegionStack37C990C7.nested.template.json
+++ b/tools/@aws-cdk/cfn-guard-custom-rules-tool/test/templates/codepipelinenestedstackPipelineCrossRegionStack37C990C7.nested.template.json
@@ -9,7 +9,7 @@
        "Action": "sts:AssumeRole", 
        "Effect": "Allow",
        "Principal": {
-        "Service": "codepipeline.amazonaws.com"
+        "Service": "codepipeline.amazonaws.com"  
        }
       }
      ],