AWS SNS Publish Automation

This n8n workflow automates publishing notifications via AWS SNS, with rate limiting and input validation. Key nodes include Webhook Trigger (receives POST requests), Extract Request Metadata (captures client data), Rate Limit Check, Validate and Sanitize Input, Prepare SNS Message (data processing), AWS SNS Publish (API interaction), and Success/Error Response nodes (handle outputs). Set up Requirements and Configuration: Install n8n by downloading from n8n.io for self-hosting or sign up at cloud.n8n.io for cloud setup. Follow installation prompts or create a cloud account. Obtain AWS credentials from aws.amazon.com: log in, go to 'IAM' > 'Users,' create a user with SNSFullAccess permissions, and note the Access Key ID and Secret Access Key. Create an SNS topic in the AWS Console under 'SNS' > 'Topics,' and note the Topic ARN. In n8n, import the provided JSON to create the workflow. Configure the 'AWS SNS Publish' node with your AWS credentials under 'Credentials,' selecting 'AWS.' Set the Webhook Trigger node’s path to 'sns/publish,' enable header authentication, and configure it with a secure key. The Validate and Sanitize Input node ensures valid subject, message, and topic inputs. Testing and Deployment Steps: Test by sending a POST request to the Webhook URL (from the Webhook Trigger node) using Postman. Example JSON body: {'subject': 'Test', 'message': 'Hello', 'topic': 'arn:aws:sns:region:account-id:topic-name', 'priority': 'normal'}. Include the authentication header. The 'Success Response' node returns a 200 status with message details, or 'Validation Error Response' (400 status) for invalid inputs. The 'Rate Limit Response' (429 status) triggers if requests exceed 10 per minute, and 'Auth Error Response' (500 status) indicates invalid AWS credentials. Activate the workflow in n8n’s interface for deployment. Monitor logs for errors like invalid Topic ARN or authentication issues, and verify credentials or input formats if problems occur.