Collection Query String whitelist under Content Negotiation in the Admin UI, or its analogue collection_query_whitelist key within api-tools-rest in module.config.php , whitelists query string arguments, allowing their value to be received by your REST resource’s fetchAll($params = []) method.
this document is from →
https://api-tools.getlaminas.org/documentation/recipes/use-url-parameters-to-filter-or-sort-data
Can we get parameters in POST method ?