Retell AI
www.retellai.comRetell AI is a platform for building voice agents that make and receive phone calls. Its REST API creates outbound calls and manages agents, phone numbers and calls.
What your agent can do
Create a new outbound phone call.
Via API.
Tasks depend on the interface and permissions.
Connection methods
Choose a route that fits your agent.
API
For custom integrations
an API key
Docs checkedView paths for APIAPI connection
API path
https://api.retellai.com- Authentication
- format is "Bearer YOUR_API_KEY"
View sources and checks
- API · Create a new outbound phone call.Checked 13 Oct 2026