---
title: "chat.tts-speak-result@1 · OpenVibe.Services"
canonical: "https://openvibe.services/docs/contracts/chat.tts-speak-result"
updated: null
---

# chat.tts-speak-result@1 · OpenVibe.Services

HTML: [chat.tts-speak-result@1 · OpenVibe.Services](https://openvibe.services/docs/contracts/chat.tts-speak-result)

# ChatTTSSpeakResult `chat.tts-speak-result@1`

Generated at 2026-11-13 06:25:48 UTC from [`openvibe-contracts v0.419.0`](https://github.com/OpenVibers/OpenVibe.Contracts/tree/v0.419.0) and [`openvibe-sdk v0.161.0`](https://github.com/OpenVibers/OpenVibe.SDK/tree/v0.161.0).

- Version: 1.0.0
- Owner: chat
- Visibility: first-party
- Status: active
- Compatibility: backward
- Schema: [`https://openvibe.network/contracts/chat/tts-speak-result.v1.json`](/docs/contracts/chat.tts-speak-result.json)

chat.tts-speak-result@1: the answer of POST /api/agent-voice/speak (Agent Streams S4). AUDIO is the sound of the line (base64), MIME\_TYPE what it is, and RATE the sample rate the desk decodes it to (the stream track is 48 kHz).

## Fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| `audio` | string | yes | The audio, base64. |  |
| `mime_type` | enum | yes |  | - `one of "audio/mpeg", "audio/wav", "audio/ogg", "audio/webm"` |
| `rate` | integer |  |  | - `minimum 1` |
| `voice_id` | string \| null |  |  | - `maxLength 64` |

## Examples

From the contract's own test fixtures: valid ones validate, rejected ones must fail.

 Valid: audio

~~~~
{
  "audio": "SUQzAw==",
  "mime_type": "audio/mpeg",
  "rate": 48000,
  "voice_id": "gary"
}
~~~~

Rejected: bad-mime

~~~~
{
  "audio": "SUQzAw==",
  "mime_type": "audio/flac"
}
~~~~

Rejected: no-audio

~~~~
{
  "mime_type": "audio/mpeg"
}
~~~~

## Validate

~~~~
const contracts = require('openvibe-contracts');
contracts.validate('chat.tts-speak-result@1', value);   // { valid, errors: [{ path, message }] }
~~~~