Need help with your APIs? I offer API discovery, governance & evangelism services. Explore services →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Retell AI Phone Call API

The Phone Call API from Retell AI — 1 operation(s) for phone call.

Retell AI Phone Call API is one of 11 APIs that Retell AI publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Phone Call. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, an AsyncAPI specification, and rate-limit docs.

This API exposes 1 operation across 1 path, and defines 3 schemas. It is described by OpenAPI 3.0.1, at version 2.0.

Requests are made against a single base URL, https://api.retellai.com.

1 operations 1 paths 3 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
2.0
Base URL
https://api.retellai.com
Authentication
HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 1

Retell AI Phone Call API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (apiKey) (api_key). By default, every request must be authenticated.

  • api_key — Retell API key, sent as: Authorization: Bearer

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Phone Call 1
POST
/v2/create-phone-call
Create an outbound phone call.
createPhoneCall body → 201

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are PhoneCallResponse (9 properties), CreatePhoneCallRequest (7 properties). Each schema is shown below with its type and property counts.

CreatePhoneCallRequest
object
7 properties 2 required
CallStatus
string
PhoneCallResponse
object
9 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

retell-phone-call-api-openapi.yml Raw ↑

Other APIs Retell AI publishes across the network.

Retell AI Agent API
Retell AI Batch Call API
Retell AI Call API
Retell AI Concurrency API
Retell AI Conversation Flow API
Retell AI Knowledge Base API
Retell AI Phone Number API
Retell AI Retell LLM API
Retell AI Voice API
Retell AI Web Call API