i have no idea what you mean.
i am not a lawyer. i do not claim to be an expert on PCI-DSS compliance. nor should anything i write be construed as legal advice; or that one is in or not in pci compliance.
square webPay makes use of the square web payments sdk. i would suggest reading
a bit here.
all field inputs (and in fact the form) are handled by square, in a PCI compliant manner (according to them).
using the square checkout api (their hosted payment page solution) does not make you any more or less compliant with the PCI-DSS requirements.
best.
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