Cart Validation: Custom Rules

Stop losing money on shipping errors and manual order reviews with this checkout validation app. Built on Shopify Functions for maximum speed, it blocks invalid orders instantly using a clinical rules engine. Enforce minimum quantities, restrict zip codes, or hide payment methods based on 40+ logic conditions. Perfect for managing B2B wholesale limits or preventing high-risk fraud. Block checkout based on cart rules like min/max value, quantities, and product types. Allow or block orders using customer tags. Create unlimited conditions and combine them with custom messages when rules apply. Simple rules, zero effort—your store follows your rules perfectly every time.