Webhook
An HTTP callback that sends real-time data to your systems when events occur.
A webhook is a way for one system to notify another when something happens. Instead of your system repeatedly checking for updates, the source system sends an HTTP request to your specified URL when a relevant event occurs.
In the context of AI voice agents, webhooks are how call outcomes reach your other business systems. When a call ends, Stellar can send a webhook to your CRM with qualification results, to your calendar with booking details, or to your notification system with a summary.
Webhooks are the foundation of automation workflows. Combined with tools like Zapier or direct API integrations, they enable real-time data flow from your voice agents to every other system in your stack.