diff --git a/action.yml b/action.yml
index 20a9c6c..b2e99c5 100644
--- a/action.yml
+++ b/action.yml
@@ -1,5 +1,5 @@
-name: "GitHub Action for flyctl"
-description: "Wraps the flyctl CLI tool to enable deploying and managing Fly apps"
+name: "GitHub Action for deplying staging apps on fly.io"
+description: "Wraps the flyctl CLI tool to enable managing temporary staging apps on Fly"
 author: Fly
 branding:
   icon: "upload-cloud"
@@ -7,3 +7,19 @@ branding:
 runs:
   using: "docker"
   image: "Dockerfile"
+inputs:
+  action:
+    description: create, deploy, or destroy
+  app-prefix:
+    description: App name that will be suffixed with e.g. *-pr123 based on the PR
+    required: true
+  image:
+    description: Optional pre-existing Docker image to use
+  region:
+    description: Region to launch the app in (alternatively, set the env FLY_REGION)
+  org:
+    description: Organization to launch the app in (alternatively, set the env FLY_ORG)
+  path:
+    description: path to a directory with a pre-existing fly.toml which will be copied
+  postgres:
+    description: Optionally attach the app to a pre-existing postgres cluster on Fly
diff --git a/entrypoint.sh b/entrypoint.sh
index d16eba5..0829bd7 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -1,11 +1,20 @@
 #!/bin/sh -l
 
-if [ -n "$FLY_PROJECT_PATH" ]; then
+if [ -n "$INPUT_PATH" ]; then
   PREV_PATH=$(pwd)
   # Allow user to change directories in which to run Fly commands
-  cd "$FLY_PROJECT_PATH" || exit
+  cd "$INPUT_PATH" || exit
 fi
-sh -c "flyctl $*"
+
+PR_NUMBER=$(echo "$GITHUB_REF" | awk 'BEGIN { FS = "/" } ; { print $3 }')
+
+echo "PR_NUMBER: $PR_NUMBER"
+echo "app: $INPUT_APP_PREFIX-pr$PR_NUMBER"
+
+env
+
+echo "workflow/event.json:"
+cat workflow/event.json
 
 ACTUAL_EXIT="$?"