Convai

Convai Text-to-Speech API

Synthesize speech from text using Convai's catalog of 500+ voices across 65+ languages. Returns audio bytes for use in games, virtual worlds, and accessibility flows. Enterprise tier.

Convai Text-to-Speech API is one of 10 APIs that Convai publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 1 machine-runnable capability that can be deployed as REST, MCP, or Agent Skill surfaces via Naftiko.

Tagged areas include AI, Speech, TTS, and Voice. The published artifact set on APIs.io includes API documentation, an OpenAPI specification, and 1 Naftiko capability spec.

Documentation GitHub OpenAPI

OpenAPI Specification

openapi: 3.1.0
info:
  title: Convai Text-to-Speech API
  version: "1.0"
  description: |
    Generate audio from text using Convai's voice catalog. Returns audio bytes
    in the requested encoding for use in games, virtual worlds, and accessibility
    flows. Voice catalog and supported languages are queryable via the TTS
    listing endpoints. Enterprise tier.
servers:
- url: https://api.convai.com
security:
- ConvaiApiKey: []
paths:
  /tts:
    post:
      summary: Synthesize Speech
      operationId: synthesizeSpeech
      tags: [TTS]
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required: [transcript, voice]
              properties:
                transcript: { type: string }
                voice: { type: string }
                filename: { type: string }
                encoding:
                  type: string
                  enum: [wav, mp3, pcm]
      responses:
        '200':
          description: Audio bytes
          content:
            audio/wav:
              schema:
                type: string
                format: binary
            audio/mpeg:
              schema:
                type: string
                format: binary
  /tts/get_available_voices:
    get:
      summary: List Available Voices
      operationId: listVoices
      tags: [TTS]
      responses:
        '200':
          description: Voice list
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    voice: { type: string }
                    language: { type: string }
                    gender: { type: string }
                    description: { type: string }
  /tts/get_available_languages:
    get:
      summary: List Available Languages
      operationId: listLanguages
      tags: [TTS]
      responses:
        '200':
          description: Language list
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    language: { type: string }
                    code: { type: string }
components:
  securitySchemes:
    ConvaiApiKey:
      type: apiKey
      in: header
      name: CONVAI-API-KEY

Convai Text-to-Speech API

Documentation

Specifications

Other Resources

OpenAPI Specification