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Payment methods

Available methods and how to choose one

Payment methods define how clients pay for resources protected by the Machine Payments Protocol. Each method specifies its payment rails, credential format, and verification logic.

Overview

When a server responds with 402 Payment Required, the WWW-Authenticate header includes a method parameter indicating which payment method to use. If supported, the client can then use the corresponding payment method to generate a Credential and retry the request.

Available methods