Need help with your APIs? I offer API discovery, governance & evangelism services. Explore services →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Inworld AI TTS API

Text-to-Speech synthesis

Inworld AI TTS API is one of 10 APIs that Inworld AI publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include TTS. The published artifact set on APIs.io includes an OpenAPI specification.

This API exposes 3 operations across 3 paths, and defines 5 schemas. It is described by OpenAPI 3.1.0, at version 1.0.

Requests are made against a single base URL, https://api.inworld.ai.

3 operations 3 paths 5 schemas 1 GET2 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
1.0
Base URL
https://api.inworld.ai
Authentication
HTTP Basic
Contact
Resource Areas
1

Authentication & Security 1

Inworld AI TTS API declares 1 security scheme for authenticating requests. It accepts HTTP basic authentication (basicAuth). By default, every request must be authenticated.

  • basicAuth — Authentication uses HTTP Basic with the API key as the username (password empty), encoded as: Authorization: Basic base64(apiKey:). Get an API key at https://p…

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 1 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

TTS 3

Text-to-Speech synthesis

POST
/v1/tts/synthesize
Synthesize speech
synthesizeSpeech body → 200400401
POST
/v1/tts/synthesize:stream
Synthesize speech (streaming)
synthesizeSpeechStream body → 200
GET
/v1/tts/voices
List available TTS voices
listTtsVoices → 200

Schemas 5

The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are SynthesizeRequest (8 properties), Voice (6 properties), AudioConfig (4 properties), Error (3 properties). Each schema is shown below with its type and property counts.

AudioConfig
object
4 properties
SynthesizeResponse
object
3 properties
Error
object
3 properties
Voice
object
6 properties
SynthesizeRequest
object
8 properties 3 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

inworld-tts-api-openapi.yml Raw ↑

Other APIs Inworld AI publishes across the network.

Inworld Text-to-Speech API
Inworld Speech-to-Text API
Inworld Realtime API
Inworld LLM Router API
Inworld AI Models API
Inworld AI Realtime API
Inworld AI Router API
Inworld AI STT API
Inworld AI Voices API