# Webhook

> Learn how webhooks enable real-time communication between apps, automating workflows for creators selling digital products.

Canonical URL: https://crevio.co/glossary/webhook

##  What is a Webhook?

A webhook is a way for one application to send real-time data to another application when a specific event occurs. Unlike APIs where you request data, webhooks "push" data automatically when something happens—like a new purchase, subscription cancellation, or customer signup.

## How Webhooks Work

1. **Event Occurs**: A customer purchases your course
2. **Trigger Fires**: The platform detects the purchase event
3. **Data Sent**: Platform sends purchase details to your specified URL
4. **Action Taken**: Receiving app processes the data and takes action

Think of webhooks as automated notifications between systems—they're the "if this, then that" of app integrations.

## Common Webhook Events for Sellers

### Purchase Events
- New order completed
- Order refunded
- [Chargeback](/glossary/chargeback) received
- Payment failed

### Subscription Events
- Subscription created
- Subscription renewed
- Subscription canceled
- Trial started/ended

### Customer Events
- New customer created
- Customer updated profile
- Customer added to segment

### Course Events
- Student enrolled in course
- Lesson completed
- [Certificate](/glossary/certificate) earned
- [Completion rate](/glossary/completion-rate) milestone reached

## Webhook Use Cases

### Email Marketing Integration
Send customer data to your [email marketing](/glossary/email-marketing) platform:
- Add new buyers to specific [segments](/glossary/segmentation)
- Tag customers based on purchases
- Trigger [welcome email](/glossary/welcome-email) sequences

### Community Access
Grant or revoke access automatically:
- Add students to Slack or Discord
- Grant [membership site](/glossary/membership-site) access
- Remove access on subscription cancellation

### Analytics and Tracking
Keep your systems in sync:
- Update CRM with purchase data
- Track revenue in spreadsheets
- Log events in analytics tools

### Custom Workflows
Build advanced [automation](/glossary/automation):
- Create invoices in accounting software
- Send purchase notifications to your phone
- Update inventory or enrollment numbers

## Webhook Best Practices

### Security
- Use HTTPS endpoints only
- Verify webhook signatures
- Keep endpoint URLs confidential
- Validate incoming data before processing

### Reliability
- Respond quickly to webhook calls (under 30 seconds)
- Implement retry logic for failures
- Log webhook events for debugging
- Handle duplicate events gracefully

### Testing
- Use webhook testing tools (like webhook.site)
- Test with sandbox/development environments
- Simulate various event scenarios
- Monitor for failed webhook deliveries

## Webhooks vs. APIs

| Webhooks | APIs |
|----------|------|
| Push data when events occur | Pull data when requested |
| Real-time notifications | On-demand queries |
| Set up once, runs automatically | Called each time you need data |
| Event-driven | Request-driven |

## Common Webhook Integrations

- **Zapier**: Connect webhooks to 5,000+ apps
- **Make (Integromat)**: Visual workflow automation
- **Email Platforms**: Mailchimp, ConvertKit, ActiveCampaign
- **CRMs**: HubSpot, Salesforce
- **Community Tools**: Discord, Slack, Circle
- **Spreadsheets**: Google Sheets, Airtable

## Getting Started with Webhooks

1. Identify what events you want to automate
2. Find the webhook settings in your platform
3. Set up a receiving endpoint (or use Zapier/Make)
4. Configure which events to send
5. Test the integration with a test transaction
6. Monitor for errors and adjust as needed