AWS SNS Webhooks

When to Use This Skill

• How do I receive AWS SNS messages at an HTTP/HTTPS endpoint?
• How do I confirm an SNS subscription (SubscriptionConfirmation / SubscribeURL)?
• How do I verify an SNS message signature?
• Why is my SNS signature verification failing?
• How do I handle SNS Notification and UnsubscribeConfirmation messages?

How SNS Delivery Differs From HMAC Webhooks

SNS is not a Standard Webhooks / shared-secret HMAC provider. Instead: