With EBSCO Discovery Service being integrated into Earwig's Copyvio Detector, we may need to first check if a user has access to TWL before being able to run the check. Showing contents of publications from EBSCO for users without TWL access might be a legal/copyright issue; we don't know if we have or if we can get permission for that.
Regardless of the ways in which we might excerpt content, we would ideally display a TWL-proxied link to the source, which would not be useful for users who aren't eligible to access the library, so this information would help target that link to the users who can use it.
TWL currently only has a per-partner user list API - the scope of this task would be to create an API which takes a username and returns their current library eligibility.