diff --git a/action.yml b/action.yml
index dc89843..28f2d07 100644
--- a/action.yml
+++ b/action.yml
@@ -11,21 +11,28 @@ inputs:
   REPO:
     description: "The path to the repository where the action will be used, e.g. 'alstr/my-repo' (automatically set)"
     required: true
+    default: "${{ github.repository }}"
   BEFORE:
     description: "The SHA of the last pushed commit (automatically set)"
     required: true
+    default: "${{ github.event.before }}"
   SHA:
     description: "The SHA of the latest commit (automatically set)"
     required: true
+    default: "${{ github.sha }}"
   TOKEN:
     description: "The GitHub access token to allow us to retrieve, create and update issues (automatically set)"
     required: true
+    default: "${{ secrets.GITHUB_TOKEN }}"
   LABEL:
     description: "The label that will be used to identify TODO comments (e.g. # TODO for Python)"
     required: true
+    default: "# TODO"
   COMMENT_MARKER:
     description: "The marker used to signify a line comment in your code (e.g. # for Python)"
     required: true
+    default: "#"
   CLOSE_ISSUES:
     description: "Optional input that specifies whether to attempt to close an issue when a TODO is removed (default: true)"
     required: false
+    default: "true"