diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..9dde623
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,43 @@
+on:
+  push:
+    branches:
+      - main
+
+env:
+  ACTION_NAME: setup-age-action
+
+name: Main
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Test action
+    steps:
+      - uses: actions/checkout@v3
+      # NOTE: Obviously, `main` might refer to a different commit if one is pushed just
+      # after the relevant commit was made. Unfortunately one cannot use `github.sha`
+      # in `uses`.
+      - uses: jacobsvante/setup-age-action@main
+      - run: |
+          echo 'Shhh!' > my-secret.txt
+          AGE_PUBKEY=$(age-keygen --output key.txt 2>&1 | cut -d' ' -f3)
+          echo $AGE_PUBKEY
+          TEST_OUTPUT=$(cat my-secret.txt | age --encrypt --recipient $AGE_PUBKEY --armor | age --decrypt --identity key.txt)
+          [[ $(echo "$TEST_OUTPUT") == 'Shhh!' ]]
+        shell: bash
+  release-please:
+    runs-on: ubuntu-latest
+    needs: [test]
+    steps:
+      - uses: google-github-actions/release-please-action@v3
+        id: release
+        with:
+          release-type: simple
+          package-name: ${{ env.ACTION_NAME }}
+          bump-minor-pre-major: true
+      - uses: actions/checkout@v3
+      - name: Tag major and minor versions in Git
+        if: ${{ steps.release.outputs.release_created }}
+        uses: jacobsvante/tag-major-minor-action@v0
+        with:
+          major: ${{ steps.release.outputs.major }}
+          minor: ${{ steps.release.outputs.minor }}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e43b0f9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.DS_Store
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..3819fed
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Jacob Magnusson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..780c96a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# setup-age-action
+
+Make age (https://github.com/FiloSottile/age) available to your Github actions.
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..6be5441
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,15 @@
+name: Setup age
+description: Download and make age (and age-keygen) available
+inputs:
+  version:
+    description: The `age` version to use
+    required: true
+    default: "1.0.0"
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        curl -Lo age.tar.gz https://github.com/FiloSottile/age/releases/download/v${{ inputs.version }}/age-v${{ inputs.version }}-linux-amd64.tar.gz
+        tar xvf age.tar.gz && rm age.tar.gz
+        echo "$(pwd)/age" >> $GITHUB_PATH