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Telnyx Voice Clones API

Capture and manage voice identities as clones for use in text-to-speech synthesis.

Telnyx Voice Clones API is one of 169 APIs that Telnyx publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Voice Clones. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 6 operations across 4 paths, and defines 14 schemas. It is described by OpenAPI 3.2.0, at version 2.0.0.

Requests are made against a single base URL, https://api.telnyx.com/v2.

6 operations 4 paths 14 schemas 1 DELETE2 GET1 PATCH2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0.0
Base URL
https://api.telnyx.com/v2
Authentication
HTTP Bearer, HTTP Bearer, OAuth 2.0, HTTP Bearer, HTTP Bearer, HTTP Bearer
Resource Areas
1

Authentication & Security 6

Telnyx Voice Clones API declares 6 security schemes for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). It accepts HTTP bearer tokens (branded-calling_bearerAuth). It supports OAuth 2.0 (oauthClientAuth) using the authorizationCode and clientCredentials flows, exposing 1 scope. It accepts HTTP bearer tokens (JWT) (outbound-voice-profiles_bearerAuth). It accepts HTTP bearer tokens (pronunciation-dicts_bearerAuth). It accepts HTTP bearer tokens (JWT) (stored-payment-transactions_bearerAuth). By default, every request must be authenticated.

  • branded-calling_bearerAuth — API key passed as a Bearer token in the Authorization header
  • oauthClientAuth — OAuth 2.0 authentication for Telnyx API and MCP integrations
  • pronunciation-dicts_bearerAuth — Telnyx API v2 key. Obtain from https://portal.telnyx.com

Paths & Operations 6

Across 4 paths, the API surfaces 6 operations — 1 DELETE, 2 GET, 1 PATCH, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Voice Clones 6

Capture and manage voice identities as clones for use in text-to-speech synthesis.

GET
/voice_clones
List voice clones
listVoiceClones 5 params → 200401
POST
/voice_clones
Create a voice clone from a voice design
createVoiceClone body → 201401404422502
POST
/voice_clones/from_upload
Create a voice clone from an audio file upload
createVoiceCloneFromUpload body → 201202400401422502
DELETE
/voice_clones/{id}
Delete a voice clone
deleteVoiceClone 1 param → 204401404
PATCH
/voice_clones/{id}
Update a voice clone
updateVoiceClone 1 param body → 200401404422
GET
/voice_clones/{id}/sample
Download voice clone audio sample
getVoiceCloneSample 1 param → 200401404

Schemas 14

The contract defines 14 schemas that model the data the API accepts and returns. The most detailed are VoiceCloneData (15 properties), MinimaxClone (8 properties), TelnyxUltraClone (8 properties), TelnyxQwen3TTSClone (8 properties). Each schema is shown below with its type and property counts.

VoiceCloneUpdateRequest
object
Request body for updating a voice clone.
3 properties 1 required
VoiceCloneResponse
object
Response envelope for a single voice clone.
1 property
MinimaxClone
object
Upload-based voice clone using the Minimax provider.
8 properties 5 required
TelnyxUltraClone
object
Upload-based voice clone using the Telnyx Ultra model.
8 properties 6 required
VoiceCloneListResponse
object
Paginated list of voice clones.
2 properties
TelnyxQwen3TTSClone
object
Upload-based voice clone using the Telnyx Qwen3TTS model (default).
8 properties 5 required
VoiceCloneData
object
A voice clone object.
15 properties
voice-designs_ErrorResponse
object
Standard error response envelope.
1 property
voice-designs_PaginationMeta
object
Pagination metadata returned with list responses.
4 properties
TelnyxDesignClone
object
Create a voice clone from a voice design using the Telnyx provider.
5 properties 4 required
voice-designs_ErrorObject
object
A single error object.
4 properties
VoiceCloneRequest
Request body for creating a voice clone from an existing voice design.
MinimaxDesignClone
object
Create a voice clone from a voice design using the Minimax provider.
5 properties 5 required
VoiceCloneUploadRequest
Multipart form data for creating a voice clone from a direct audio upload. Maximum file size: 5MB for Telnyx, 20MB for Minimax.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

telnyx-voice-clones-api-openapi.yml Raw ↑

Other APIs Telnyx publishes across the network.

Telnyx Access Tokens API
Telnyx Addresses API
Telnyx Advanced Number Orders API
Telnyx Assistants API
Telnyx Audio API
Telnyx Audit Logs API
Telnyx Authentication Providers API
Telnyx AutoRechargePreferences API
Telnyx Billing API
Telnyx Billing Groups API
Telnyx Brands API
Telnyx Bucket SSL Certificate API
Where this information came from

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