Installation: pip install ckanext-accessrequests, add ‘accessrequests’ to ckan.plugins. Configuration options: ckanext.accessrequests.approver_email (required) sets admin email for receiving new request notifications, ckanext.accessrequests.restricted_roles (space-separated list) defines roles that cannot be requested (e.g., ‘creator admin’). Administrators with Admin role in top-level organizations can manage requests. Use cases: Controlled data access, mediated resource sharing, organization membership approval workflows, restricted dataset access management. Note: Designed for older CKAN versions (2.6-2.8), may need updates for modern CKAN.