Privilege/Role to view work schedule patterns,schedules and shifts through REST API

Summary:

Hi,

We want to integrate our HCM with third party system and we need to provide read only access to work schedule patterns,schedules and shifts through REST API.

So can anyone tell me what are the roles or privileges I need to use in my role creation process. As per the business requirement we dont want to give any objects access and need to give only read only access to all schedules, patterns and shifts.

Regards,

Kiran