diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
new file mode 100644
index 0000000..c3b7566
--- /dev/null
+++ b/.github/workflows/scorecard.yml
@@ -0,0 +1,45 @@
+name: Scorecard analysis workflow
+on:
+  push:
+    branches:
+      - main
+  schedule:
+    # Weekly on Saturdays.
+    - cron: "30 1 * * 6"
+
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    permissions:
+      # Needed for Code scanning upload
+      security-events: write
+      # Needed for GitHub OIDC token if publish_results is true
+      id-token: write
+
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          publish_results: true
+
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@38697555549f1db7851b81482ff19f1fa5c4fedc # v4.34.1
+        with:
+          sarif_file: results.sarif
diff --git a/README.md b/README.md
index 419eef3..d428fa6 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # python-security-auditing
 
+[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/lhoupert/action-python-security-auditing/badge)](https://scorecard.dev/viewer/?uri=github.com/lhoupert/action-python-security-auditing)
+
 A GitHub Action that runs **[bandit](https://bandit.readthedocs.io/)** (static code analysis) and **[pip-audit](https://pypi.org/project/pip-audit/)** (dependency vulnerability scanning) on a Python repository, then puts the results in one PR comment, the workflow step summary, and a downloadable artifact.
 
 ## When this might be useful