diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..b585471
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,29 @@
+name: Create PR if not exists
+description: Creates a pull request for a branch if it does not already exist
+inputs:
+  github_token:
+    description: GitHub token for authentication
+    required: true
+  branch:
+    description: Branch for which to create the PR
+    required: true
+  pr_title:
+    description: Title of the pull request
+    required: true
+  pr_body:
+    description: Body of the pull request
+    required: true
+  assignees:
+    description: Comma-separated list of assignees for the pull request
+    required: false
+    default: ''
+  reviewers:
+    description: Comma-separated list of reviewers for the pull request
+    required: false
+    default: ''
+outputs:
+  pull_request_url:
+    description: URL of the created pull request
+runs:
+  using: node12
+  main: index.js