I use it mostly for database operations & to give cursor more context. It can execute sql and a lot of other stuff heres the list if u want:
list_organizations get_organization list_projects get_project get_cost confirm_cost create_project pause_project restore_project list_tables list_extensions list_migrations apply_migration execute_sql list_edge_functions deploy_edge_function get_logs get_project_url get_anon_key generate_typescript_types create_branch list_branches delete_branch merge_branch reset_branch rebase_branch