Vonage SMS Send Automation

This n8n workflow automates sending SMS via Vonage API, with rate limiting and input validation. Key nodes include Webhook Trigger (receives POST requests), Extract Request Metadata (captures client data), SMS Rate Limit Check, Validate and Sanitize SMS Input, Prepare SMS Message (data processing), Send SMS via Vonage (API interaction), and Success/Error Response nodes (handle outputs). Setup 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 Vonage API credentials from dashboard.vonage.com: sign in, go to 'API Settings,' create an API key, and note the API Key and Secret. Purchase or configure a sender phone number in the Vonage dashboard. In n8n, import the provided JSON to create the workflow. Configure the 'Send SMS via Vonage' node with your Vonage API Key and Secret under 'Credentials,' selecting 'Vonage API.' Set the Webhook Trigger node’s path to 'sms/send,' enable header authentication with a secure key, and ensure it accepts POST requests. The Validate and Sanitize SMS Input node checks phone numbers, message content, and priority. Testing and Deployment Steps: Test by sending a POST request to the Webhook URL (from the Webhook Trigger node) using Postman. Example JSON body: {'to': '+1234567890', 'message': 'Hello', 'from': '+1987654321', 'messageType': 'text', 'priority': 'normal'} with the authentication header. The 'SMS Success Response' node returns a 200 status with message details, or 'SMS Validation Error Response' (400 status) for invalid inputs like incorrect phone formats. The 'SMS Rate Limit Response' (429 status) triggers if exceeding 5 SMS per minute. The 'SMS Auth Error Response' (401 status) indicates invalid credentials. Activate the workflow in n8n’s interface for deployment. Monitor logs for errors like invalid numbers or authentication issues, and verify credentials or input formats if problems occur.