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First release · Checkout validator
Checkout validation for carts that need guardrails
Stop checkout when cart contents, quantities, customer tags, or order context need a clear rule before payment.
Block by cart contents and quantities
Show clear messages before payment
Keep validation rules easy to review
App focus
Built for one clear workflow
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Show clear messages before payment
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Keep validation rules easy to review
Start with BlockCart
Use the help center to configure your first checkout validation workflow and understand how BlockCart evaluates rules.
Open BlockCart guides