Adyen

Adyen offers a platform to accept online payments through cards, wallets, and local payment methods, integrating with websites and mobile apps. Their documentation includes an API Explorer, suggesting developer-friendly integration options. They provide tools and resources to get started with accepting payments.

The candidate, Adyen, provides online payment processing, as evidenced by the title 'Online payments | Adyen Docs' and the description 'Accept payments with cards, wallets, and local payment methods on your website and mobile app.' The presence of an 'API Explorer' and mentions of API documentation indicate developer API integration capabilities.