diff --git a/.github/scripts/cleanup-test-indexes.js b/.github/scripts/cleanup-test-indexes.js
new file mode 100644
index 0000000..7bc0fe8
--- /dev/null
+++ b/.github/scripts/cleanup-test-indexes.js
@@ -0,0 +1,45 @@
+const { algoliasearch } = require('algoliasearch');
+
+const BATCH_SIZE = 20;
+
+async function main() {
+  const client = algoliasearch(process.env.APP_ID, process.env.API_KEY);
+
+  const { items } = await client.listIndices();
+  const names = items.map((i) => i.name).filter((n) => n.includes('sf_phpunit_'));
+
+  if (names.length === 0) {
+    console.log('Nothing to delete.');
+    return;
+  }
+
+  console.log(`Deleting ${names.length} indexes in batches of ${BATCH_SIZE}...`);
+
+  const tasks = [];
+  for (let i = 0; i < names.length; i += BATCH_SIZE) {
+    const batch = names.slice(i, i + BATCH_SIZE);
+    const batchTasks = await Promise.all(
+      batch.map(async (name) => {
+        const { taskID } = await client.deleteIndex({ indexName: name });
+        return { name, taskID };
+      })
+    );
+    tasks.push(...batchTasks);
+    console.log(`  requested ${Math.min(i + BATCH_SIZE, names.length)}/${names.length}`);
+  }
+
+  console.log('Waiting for all tasks to complete...');
+  await Promise.all(
+    tasks.map(async ({ name, taskID }) => {
+      await client.waitForTask({ indexName: name, taskID });
+      console.log(`  confirmed ${name}`);
+    })
+  );
+
+  console.log('All deletes confirmed.');
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
diff --git a/.github/scripts/package.json b/.github/scripts/package.json
new file mode 100644
index 0000000..3f7574b
--- /dev/null
+++ b/.github/scripts/package.json
@@ -0,0 +1,10 @@
+{
+  "name": "search-bundle-ci-scripts",
+  "private": true,
+  "dependencies": {
+    "algoliasearch": "^5"
+  },
+  "devDependencies": {
+    "@types/node": "^24"
+  }
+}
diff --git a/.github/workflows/cleanup-test-indexes.yml b/.github/workflows/cleanup-test-indexes.yml
new file mode 100644
index 0000000..83ce09d
--- /dev/null
+++ b/.github/workflows/cleanup-test-indexes.yml
@@ -0,0 +1,21 @@
+name: Cleanup test indexes
+
+on:
+  schedule:
+    - cron: '0 3 * * 0'
+  workflow_dispatch:
+
+jobs:
+  cleanup:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '24'
+      - run: npm install algoliasearch@^5 --no-save
+      - name: Delete sf_phpunit_* indexes
+        env:
+          APP_ID: ${{ secrets.ALGOLIA_APP_ID }}
+          API_KEY: ${{ secrets.ALGOLIA_API_KEY }}
+        run: node .github/scripts/cleanup-test-indexes.js
diff --git a/.gitignore b/.gitignore
index b8e453c..88c1b7a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@ clover.xml
 /tests/QualityTools/composer.lock
 .phpunit.result.cache
 phpunit.xml.dist.bak
+/.github/scripts/node_modules/
+/.github/scripts/package-lock.json