amp_url_validation_sleep_time apply_filters( 'amp_url_validation_sleep_time', int ) Description # Filters the length of time to sleep between validating URLs. Parameters # (int) The number of seconds. Default 1. Setting to 0 or a negative numbers disables all throttling. Source # File: src/Validation/URLValidationCron.php Changelog # Changelog Version Description 2.1 Introduced.