Inworld AI Voices API

openapi: 3.1.0
info:
  title: Inworld Models Voices API
  description: 'List every model available behind the Inworld platform — first-party TTS, STT, and Realtime models plus all third-party LLMs reachable through the LLM Router. Returns provider, model id, capabilities (chat, vision, tool use, speech, streaming), and pricing tier metadata for runtime discovery.

    '
  version: v1
  contact:
    name: Inworld Support
    url: https://docs.inworld.ai/tts/resources/support
  license:
    name: Inworld Terms of Service
    url: https://inworld.ai/legal/terms-of-service
servers:
- url: https://api.inworld.ai
  description: Inworld Production API
security:
- BasicAuth: []
tags:
- name: Voices
  description: Voice cloning, design, and lifecycle.
paths:
  /voices/v1/voices:
    get:
      summary: List Voices
      description: List all voices in the caller's workspace.
      operationId: listVoices
      tags:
      - Voices
      parameters:
      - name: pageSize
        in: query
        required: false
        schema:
          type: integer
      - name: pageToken
        in: query
        required: false
        schema:
          type: string
      responses:
        '200':
          description: Voices returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListVoicesResponse'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /voices/v1/voices:clone:
    post:
      summary: Clone Voice
      description: 'Instant voice cloning. Submit one or more short audio samples (WAV or MP3, base64-encoded) and receive a new custom voice that can be used immediately in TTS and Realtime calls.

        '
      operationId: cloneVoice
      tags:
      - Voices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CloneVoiceRequest'
      responses:
        '200':
          description: Cloned voice returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CloneVoiceResponse'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /voices/v1/voices:design:
    post:
      summary: Design Voice
      description: 'Generate a brand-new voice from a natural-language description plus optional reference audio. Returns a candidate voice that can be previewed and then published.

        '
      operationId: designVoice
      tags:
      - Voices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DesignVoiceRequest'
      responses:
        '200':
          description: Designed voice returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Voice'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /voices/v1/voices:publish:
    post:
      summary: Publish Voice
      description: Publish a designed or cloned voice so it is available for use in TTS and Realtime.
      operationId: publishVoice
      tags:
      - Voices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - voiceId
              properties:
                voiceId:
                  type: string
      responses:
        '200':
          description: Voice published.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Voice'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
  /voices/v1/voices/{voiceId}:
    parameters:
    - name: voiceId
      in: path
      required: true
      schema:
        type: string
    get:
      summary: Get Voice
      operationId: getVoice
      tags:
      - Voices
      responses:
        '200':
          description: Voice returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Voice'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
    patch:
      summary: Update Voice
      operationId: updateVoice
      tags:
      - Voices
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateVoiceRequest'
      responses:
        '200':
          description: Updated voice returned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Voice'
        4XX:
          $ref: '#/components/responses/ErrorResponse'
    delete:
      summary: Delete Voice
      operationId: deleteVoice
      tags:
      - Voices
      responses:
        '204':
          description: Voice deleted.
        4XX:
          $ref: '#/components/responses/ErrorResponse'
components:
  responses:
    ErrorResponse:
      description: Error response.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    CloneVoiceRequest:
      type: object
      required:
      - displayName
      - langCode
      - voiceSamples
      properties:
        displayName:
          type: string
        langCode:
          type: string
          enum:
          - EN_US
          - ZH_CN
          - KO_KR
          - JA_JP
          - RU_RU
          - AUTO
          - IT_IT
          - ES_ES
          - PT_BR
          - DE_DE
          - FR_FR
          - AR_SA
          - PL_PL
          - NL_NL
          - HI_IN
          - HE_IL
        description:
          type: string
        tags:
          type: array
          items:
            type: string
        voiceSamples:
          type: array
          items:
            type: object
            required:
            - audioData
            properties:
              audioData:
                type: string
                format: byte
                description: Base64-encoded WAV or MP3 audio.
              transcription:
                type: string
        audioProcessingConfig:
          type: object
          properties:
            removeBackgroundNoise:
              type: boolean
    UpdateVoiceRequest:
      type: object
      properties:
        displayName:
          type: string
        description:
          type: string
        tags:
          type: array
          items:
            type: string
    CloneVoiceResponse:
      type: object
      properties:
        voice:
          $ref: '#/components/schemas/Voice'
        audioSamplesValidated:
          type: array
          items:
            type: object
            properties:
              valid:
                type: boolean
              reason:
                type: string
    Error:
      type: object
      properties:
        code:
          type: integer
        message:
          type: string
    DesignVoiceRequest:
      type: object
      required:
      - displayName
      - prompt
      - langCode
      properties:
        displayName:
          type: string
        prompt:
          type: string
          description: Natural-language description of the voice (gender, age, accent, tone).
        langCode:
          type: string
        referenceAudio:
          type: string
          format: byte
          description: Optional base64 reference audio.
    ListVoicesResponse:
      type: object
      properties:
        voices:
          type: array
          items:
            $ref: '#/components/schemas/Voice'
        nextPageToken:
          type: string
    Voice:
      type: object
      properties:
        voiceId:
          type: string
        displayName:
          type: string
        description:
          type: string
        langCode:
          type: string
        tags:
          type: array
          items:
            type: string
        source:
          type: string
          enum:
          - INWORLD
          - IVC
          - DESIGN
        published:
          type: boolean
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic