Last Updated: 7/2/2026
What are Webhooks?
Webhooks are HTTP callbacks that allow applications to communicate with each other in real-time. Instead of polling for updates, webhooks push data to your application when events occur.
How Webhooks Work
- Registration: You provide a URL endpoint to the service
- Event Trigger: An event occurs in the source system
- HTTP POST: The service sends a POST request to your endpoint
- Processing: Your application receives and processes the payload
Security Considerations
Verify Signatures
Always verify webhook signatures to ensure requests are authentic:
- Check HMAC signatures
- Validate timestamps to prevent replay attacks
Use HTTPS
Always use HTTPS endpoints to protect data in transit.
Implement Idempotency
Handle duplicate webhook deliveries gracefully by making your webhook handlers idempotent.
Common Use Cases
- Payment processing notifications
- Git repository events
- Chat message alerts
- CRM updates