Inworld Voice API

openapi: 3.1.0
info:
  title: Inworld Voice API
  description: >
    Manage custom voices used by the Inworld TTS and Realtime APIs. Clone voices
    from short audio samples (instant voice cloning), design voices from text
    descriptions, publish voices for workspace-wide use, and list / get / update /
    delete voices in your workspace.
  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:
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic
  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
    CloneVoiceResponse:
      type: object
      properties:
        voice:
          $ref: '#/components/schemas/Voice'
        audioSamplesValidated:
          type: array
          items:
            type: object
            properties:
              valid:
                type: boolean
              reason:
                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.
    UpdateVoiceRequest:
      type: object
      properties:
        displayName:
          type: string
        description:
          type: string
        tags:
          type: array
          items:
            type: string
    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
    Error:
      type: object
      properties:
        code:
          type: integer
        message:
          type: string
  responses:
    ErrorResponse:
      description: Error response.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'