> ## Documentation Index
> Fetch the complete documentation index at: https://help.withallo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# List voices

> Lists the voices an AI receptionist can speak with, the same catalog the Allo app offers. Each `id` is what `voice_id` takes, and a voice speaks the language it is listed under.

<Note>
  **Required scope:** `AGENTS_READ`
</Note>

## Behavior

Lists the voices an AI receptionist can speak with, the same catalog the Allo app offers. Each `id` is what `voice_id` takes on [Update configuration](/en/v2/api-reference/agent/update-agent).

A voice speaks the language it is listed under, so pick one that matches the receptionist's `language`. `demo_url` is an audio sample you can play before choosing.

The list is not paginated: it is a fixed catalog.

## Errors

* `403 API_KEY_INSUFFICIENT_SCOPE`: the key does not hold `AGENTS_READ`.


## OpenAPI

````yaml GET /v2/api/voices
openapi: 3.0.3
info:
  title: Allo API
  description: >-
    Allo API provides programmatic access to your Allo account, allowing you to
    manage webhooks, retrieve calls and contacts, and send SMS messages.


    All requests to `/v1/api/**` endpoints automatically go through quota
    checking and scope validation.
  version: 1.0.0
  contact:
    name: Allo Support
servers:
  - url: https://api.withallo.com
    description: Production server
security: []
tags:
  - name: Summary Templates
    description: >-
      Manage call summary templates that control how AI-generated call summaries
      are structured for your team.
  - name: Webhooks
    description: >-
      Manage webhook endpoints to receive real-time notifications about events
      in your Allo account. Each endpoint subscribes to one or more event topics
      and is verified with a signing secret.
  - name: Calls
    description: >-
      Retrieve and search call records with filtering and pagination. Filter
      calls by your Allo phone number.
  - name: Contacts
    description: >-
      Search and retrieve contact information with sorting and pagination.
      Includes engagement level tracking.
  - name: SMS
    description: Send SMS messages to phone numbers using your Allo numbers.
  - name: Phone Numbers
    description: Retrieve information about your Allo phone numbers.
  - name: Analytics
    description: Pre-computed call metrics, team performance, and outbound dial funnel
  - name: CRM
    description: Manage people, companies, and deals in your CRM.
  - name: Notes
    description: >-
      Internal team notes on conversations and CRM people, with @mention
      support. Notes are never visible to the contact.
  - name: Threads
    description: >-
      Team discussion threads attached to a conversation item (call, SMS, or
      conversation note). One thread per item.
  - name: AI Receptionist
    description: >-
      Read and write the AI receptionist configuration of a phone line: business
      details, voice, prompt, capabilities, business hours, transfer rules,
      scheduling calendars and knowledge sources.
paths:
  /v2/api/voices:
    get:
      tags:
        - AI Receptionist
      summary: List voices
      description: >-
        Lists the voices an AI receptionist can speak with, the same catalog the
        Allo app offers. Each `id` is what `voice_id` takes, and a voice speaks
        the language it is listed under.
      operationId: listVoices
      responses:
        '200':
          description: The voice catalog
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Voice'
        '401':
          $ref: '#/components/responses/ApiUnauthorized'
        '403':
          $ref: '#/components/responses/ApiForbidden'
        '429':
          $ref: '#/components/responses/ApiRateLimited'
      security:
        - ApiKeyAuth: []
components:
  schemas:
    Voice:
      type: object
      description: A voice the AI receptionist can speak with.
      properties:
        id:
          type: string
          description: What `voice_id` takes on `PATCH /v2/api/numbers/{number}/agent`.
          example: maya
        language:
          type: string
          description: >-
            The language this voice speaks. Match it to the receptionist's
            `language`.
          example: en-US
        avatar_url:
          type: string
        demo_url:
          type: string
          description: An audio sample, so you can listen before choosing.
        gender:
          type: string
          enum:
            - MALE
            - FEMALE
    ApiError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
            code:
              type: string
            message:
              type: string
            retryable:
              type: boolean
            request_id:
              type: string
            retry_after_seconds:
              type: integer
              nullable: true
  responses:
    ApiUnauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiForbidden:
      description: API key lacks the required scope or access to the resource
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    ApiRateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization

````