Examples / Cloud events: AWS, Google Cloud and Azure / AWS S3 event notifications (via SNS)

AWS S3 event notifications (via SNS) webhooks

Object created, removed or restored in a bucket, published to SNS (or to EventBridge).

Events

s3:ObjectCreated:Put
s3:ObjectCreated:CompleteMultipartUpload
s3:ObjectRemoved:Delete
s3:ObjectRestore:Completed

Signature

The SNS envelope is signed (SigningCertURL + Signature). The event is JSON inside the SNS Message string.

Retries

SNS delivery policy.

See a retry schedule in the calculator.

Docs

docs.aws.amazon.com/AmazonS3/latest/userguide/EventNotifi...

Checked 2026-10-09. Report a change.

Sample request from AWS S3 event notifications (via SNS)illustrative, shortened

Content-Typetext/plain; charset=UTF-8x-amz-sns-message-typeNotification

{
  "Type": "Notification",
  "Message": "{\"Records\":[{\"eventVersion\":\"2.1\",\"eventSource\":\"aws:s3\",\"eventName\":\"ObjectCreated:Put\",\"eventTime\":\"2026-10-09T06:34:00.000Z\",\"s3\":{\"bucket\":{\"name\":\"acme-uploads\"},\"object\":{\"key\":\"invoices/2026-10/INV-20481.pdf\",\"size\":84210,\"eTag\":\"d41d8cd9…\"}}}]}",
  "Timestamp": "2026-10-09T06:34:01.000Z"
}

Object keys are URL-encoded in the event: decode before you use them.
Browser uploads with a presigned POST need no upload endpoint of yours: the bucket event reaches the bin, and an action emails the client (from <bin>@o.webhooks.xyz), posts to Slack or calls your app.

Receive AWS S3 event notifications (via SNS) webhooks with webhooks.xyz

Create a bin. Paste its URL into AWS S3 event notifications (via SNS). Each request shows at once with its headers and body. Add your server as a destination, and deliveries retry when it is down. Request an invite.

More in cloud events: aws, google cloud and azure: AWS Budgets and Cost Anomaly Detection (via SNS), AWS CloudWatch alarms (via SNS), AWS CodePipeline and CodeBuild (via SNS or EventBridge), AWS EventBridge API destinations, AWS GuardDuty and Security Hub findings (via EventBridge), AWS SES notifications (via SNS), AWS SNS (HTTPS subscriptions), Azure DevOps service hooks, Azure Event Grid webhooks, Azure Logic Apps and Power Automate (HTTP action), Azure Monitor action group webhooks, Google Cloud Billing budgets (via Pub/Sub), Google Cloud Build notifications (via Pub/Sub), Google Cloud Monitoring alerting webhooks, Google Cloud Pub/Sub push subscriptions.