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Stories: Authentication

Diagram of a backend server sending three kinds of payment API credentials: an API key, an OAuth 2.0 bearer token and a mutual TLS client certificate, each paired with the secret it requires you to protect
Payment APIs ·

Payment API Authentication: API Keys, OAuth 2.0 and Mutual TLS

API keys, OAuth 2.0 tokens and mutual TLS compared across Stripe, Adyen, PayPal, Square and Visa.

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