Session keys will expire if they are not used within 24 hours, or if the client is restarted, or if the underlying access key is deleted. You can fetch a session key with the /session_key command and thereafter use it just as you would an access key, just with Hydrus-Client-API-Session-Key instead. There is also a simple 'session' system, where you can get a temporary key that gives the same access without having to include the permanent access key in every request.
POST /manage_popups/finish_and_dismiss_popup POST /manage_file_relationships/set_kings POST /manage_file_relationships/set_file_relationships GET /manage_file_relationships/get_random_potentials GET /manage_file_relationships/get_potential_pairs GET /manage_file_relationships/get_potentials_count
GET /manage_file_relationships/get_file_relationships
