The logs section gives you a full history and deep knowledge of all the activity around your API calls:
This section includes all your API requests, as well as the authentication flow for APIs using OAuth. You can search through logs, filter by API, or even filter by request type.
You can search inside the full request and response of each request. That includes the path, the query parameters, the body and the headers.
The data retention depends on your Bearer account. See you plan details to have the right data retention period of your account.
Bearer truncates the request and response bodies to 32kb each.