diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 59b9e7c0..ee2c6d1f 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:d0e70b7cbce0f340c4755bafee5c1ef754c4e83927ecce8988f4f4c530572f61
-# created: 2024-03-18T16:26:15.743347415Z
+  digest: sha256:8244c1253becbaa533f48724a6348e4b92a10df4b4dfb66d87e615e633059bdf
+# created: 2024-04-07T11:43:40.730565127Z
diff --git a/docs/summary_overview.md b/docs/summary_overview.md
new file mode 100644
index 00000000..adc78936
--- /dev/null
+++ b/docs/summary_overview.md
@@ -0,0 +1,22 @@
+[
+This is a templated file. Adding content to this file may result in it being
+reverted. Instead, if you want to place additional content, create an
+"overview_content.md" file in `docs/` directory. The Sphinx tool will
+pick up on the content and merge the content.
+]: #
+
+# Document AI Toolbox API
+
+Overview of the APIs available for Document AI Toolbox API.
+
+## All entries
+
+Classes, methods and properties & attributes for
+Document AI Toolbox API.
+
+[classes](https://cloud.google.com/python/docs/reference/documentai-toolbox/latest/summary_class.html)
+
+[methods](https://cloud.google.com/python/docs/reference/documentai-toolbox/latest/summary_method.html)
+
+[properties and
+attributes](https://cloud.google.com/python/docs/reference/documentai-toolbox/latest/summary_property.html)