Adyen Adyen Authentication Webhooks API Adyen sends webhooks to inform your system about events related to cardholder authentication. Documentation GitHub OpenAPI Documentation 📖 Documentation https://docs.adyen.com/development-resources/webhooks/ Specifications ⚙ OpenAPI https://raw.githubusercontent.com/api-evangelist/adyen/refs/heads/main/openapi/authentication-webhooks-openapi-original.yml