diff --git a/README.md b/README.md
new file mode 100644
index 0000000..bc18a23
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+# uv-cache
+
+This is a very simple action that sets up cache support for `uv`. It doesn't do
+anything else. It's assumed that `uv`, as well as all the dependencies for
+`actions/cache@v4` are available in the container. I wrote this to work well
+with [based-alpine](https://git.ficd.sh/ficd/based-alpine).
diff --git a/action.yml b/action.yml
index 4ab22f8..0226a6c 100644
--- a/action.yml
+++ b/action.yml
@@ -1,6 +1,10 @@
 name: Setup uv cache
 description: Composite action to determine uv cache dir and restore cache.
 author: Daniel Fichtinger
+outputs:
+  uv-cache-hit:
+    description: "Whether the uv cache was restored"
+    value: ${{ steps.cache-restore.outputs.cache-hit }}
 runs:
   using: "composite"
   steps:
@@ -10,6 +14,7 @@ runs:
       run: |
         echo "dir=$(uv cache dir)" >> "$GITHUB_OUTPUT"
     - name: Restore uv cache
+      id: cache-restore
       uses: actions/cache@v4
       with:
         path: ${{ steps.uv-cache.outputs.dir }}