A short list of things the tools can do on this site without breaking anything that matters.
Reading
List posts by category, tag or status. Read a single post with its comments. Look at the media library, the users and the site settings.
Writing
Create a post or a page. Update one that exists. Upload an image. Approve or reject a comment. Every one of these reports what kind of change it is before it runs.
Undoing
Anything written here can be written again. This site carries no data worth protecting.