Learn what Webhooks are, how they connect your AI voice agents to real-time actions, and why they’re essential for automating workflows across systems.
Webhooks are lightweight, event-driven messages sent from one system to another in real time. When a specific event happens like a user completing a call, providing a phone number, or selecting an option your AI voice agent can trigger a webhook to notify another application and pass along relevant data.
They’re often described as “reverse APIs” because instead of pulling data (via a request), they push it automatically when something happens.
Webhooks allow AI voice agents to take real-world actions, integrate with other systems, and create dynamic, personalized workflows. With webhooks, your agent can:
Update CRMs with contact details or call summaries
Trigger follow-up emails, Slack messages, or SMS confirmations
Book appointments directly in scheduling tools
Push data into analytics dashboards or ticketing systems
Initiate custom workflows across platforms like Zapier, Make, or n8n
For B2B operations, this means seamless automation across tools, reducing manual work and making every call interaction productive.
Define an Event
Choose when the webhook should trigger—e.g., when an intent is detected, a call ends, or a field is collected.
Configure a Destination URL
Point the webhook to the system you want to notify (e.g., your CRM, backend server, or automation platform).
Send Structured Data
When the event happens, the AI agent sends JSON-formatted data to the webhook endpoint.
Trigger an Action
The receiving system uses that data to take action—log it, display it, or pass it along to other systems.
A property management company uses Retell AI voice agents to field maintenance requests. When a tenant reports an issue, the agent collects the details and instantly triggers a webhook to the company’s service ticketing system that logs the request and assigns it to the right technician, with no manual intervention.
Webhooks are what make voice automation feel connected. They bridge your AI agents to the rest of your tech stack, ultimately turning conversations into workflows.
Learn how Retell AI voice agents use webhooks to deliver real-time, integrated, and fully automated experiences across tools and teams.
Revolutionize your call operation with Retell.
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