DO $$
    DECLARE
        schema_name INFORMATION_SCHEMA.routines.routine_schema%TYPE = 'api';
        fns CURSOR FOR
            select routine_name from INFORMATION_SCHEMA.routines WHERE routine_schema = schema_name;
    BEGIN
        FOR fn_record IN fns LOOP
                EXECUTE 'grant execute on function ' || schema_name || '.' || fn_record.routine_name || ' to anonymous;';
            END LOOP;
    END$$;