Using the Library API token to access file or dir details

I am writing a ContentManager for Jupyter Notebooks, to integrate Seafile as a data backend. Using the full user token everything works fine. However, I would prefer using a token with less rights for a single library.

Creating or querying the library tokens works fine, however I am not sure for which endpoints I can already use this new library token. For example, it seems not to work to query file or dir details with the library token.

For the content manager I would for example need the last modified value for a file. Is this possible using only the library API token? Is this already implemented or at least planned?