This Use Google Cloud Java Client with Google App Engine suggests that we should use appengine-api-1.0-sdk for Java 7 GAE standard environments.

Is there a repository for this appengine-api-1.0-sdk somewhere? Or is there something like release notes for each version? The closest thing I can find is this: https://cloud.google.com/appengine/docs/standard/java/release-notes but it seems it only says something like "Updated Java SDK to version 1.9.xx" and no other information is provided.