The PayPal Name-Value Pair Interface is recommended for most developers
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Get a head start on your PayPal integrations with our software development kits (SDKs). They mask integration complexities with client libraries that let you program to "wrapper" library APIs.
Find SDKs by language and product – and choose between SOAP and Name-Value Pair interfaces.PayPal Website Payments Standard toolkits provide code samples for encrypting website payments, and receiving payment notifications after checkout,
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