> For the complete documentation index, see [llms.txt](https://docs.bird.com/api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bird.com/api/voice-api/voice-calls-api/say-text-to-speech-tts.md).

# Say Text-To-Speech (TTS)

Use this request in order to `say` a text message during a call, this API uses our Text-To-Speech service to convert the provided text into an audio, you can configure the text, language, voice nature and if you want the message to repeat.

## Say TTS

> Say TTS into a channel call

```json
{"openapi":"3.0.3","info":{"title":"Channels","version":"v1"},"tags":[],"servers":[{"url":"https://api.bird.com","description":"Production API"}],"security":[{"accessKey":[]}],"components":{"securitySchemes":{"accessKey":{"description":"Uses the Authorization header: 'AccessKey ' followed by your access key token","scheme":"AccessKey","type":"http"}},"schemas":{"Say":{"type":"object","title":"Say text to Call","additionalProperties":false,"properties":{"text":{"type":"string"},"locale":{"$ref":"#/components/schemas/standard.locale.tts-polly"},"voice":{"type":"string"},"loop":{"type":"integer"},"timeout":{"type":"integer"}},"required":["text"]},"standard.locale.tts-polly":{"description":"Curated set of BCP47 locale identifiers supported by AWS Polly text-to-speech in Bird voice products","enum":["arb","ar-AE","bg-BG","bn-IN","ca-ES","cs-CZ","cy-GB","cmn-CN","da-DK","de-CH","de-DE","de-AT","el-GR","en-AU","en-GB","en-IN","en-NZ","en-ZA","en-US","en-GB-WLS","es-ES","es-MX","es-US","eu-ES","fi-FI","fil-PH","fr-FR","fr-BE","fr-CA","gl-ES","gu-IN","he-IL","hi-IN","hu-HU","id-ID","is-IS","it-IT","ja-JP","ko-KR","lt-LT","lv-LV","ms-MY","nl-BE","nl-NL","nb-NO","pa-IN","pl-PL","pt-BR","pt-PT","ro-RO","ru-RU","sk-SK","sr-RS","sv-SE","ta-IN","te-IN","tr-TR","th-TH","uk-UA","vi-VN","yue-CN"],"type":"string"},"CallCommandResponse":{"type":"object","title":"CallCommandResponse","additionalProperties":false,"properties":{"id":{"type":"string","format":"uuid"},"callId":{"type":"string","format":"uuid"},"callFlowId":{"nullable":true,"type":"string","format":"uuid"},"status":{"type":"string"},"command":{"type":"string"},"conditions":{"type":"array","items":{"$ref":"#/components/schemas/CallFlowCommandCondition"}}}},"CallFlowCommandCondition":{"type":"object","title":"Conditions for command","additionalProperties":false,"properties":{"variable":{"type":"string","enum":["keys","speech"]},"operator":{"type":"string","enum":["eq","ne","==","!=","contains"]},"value":{"type":"string"}}},"error.detailed":{"additionalProperties":false,"description":"An error returned from the API that includes additional details about the error. The `details` property can contain any additional information about the error that may be helpful for debugging or understanding the error.\n","properties":{"code":{"description":"A unique code that identifies the error. This code can be used to programmatically identify the error.","minLength":3,"type":"string"},"details":{"additionalProperties":true,"description":"Any additional information about the error that may be helpful for debugging or understanding the error.","type":"object"},"message":{"description":"A human-readable message that describes the error.","minLength":1,"type":"string"}},"required":["code","message"],"title":"DetailedError","type":"object"},"error.validation":{"additionalProperties":false,"description":"A validation error returned from the API. The `details` map keys are JSON paths\npointing into the request body / parameters; values are arrays of human-readable\nmessages describing each problem with that path.\n","properties":{"code":{"description":"A unique code that identifies the error. This code can be used to programmatically identify the error.","minLength":3,"type":"string"},"details":{"additionalProperties":{"items":{"type":"string"},"type":"array"},"description":"Per-field validation messages keyed by JSON path.","type":"object"},"message":{"description":"A human-readable message that describes the error.","minLength":1,"type":"string"}},"required":["code","message"],"title":"ValidationError","type":"object"}},"responses":{"requestError":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/error.detailed"}}},"description":"An error"},"validationError":{"$ref":"#/components/responses/error.response.invalid_request"},"error.response.invalid_request":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/error.validation"}}},"description":"The request contains invalid parameters or body fields."}}},"paths":{"/workspaces/{workspaceId}/channels/{channelId}/calls/{callId}/say":{"post":{"summary":"Say TTS","operationId":"sayChannelCall","description":"Say TTS into a channel call","tags":["channel_call_command"],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/Say"}}}},"responses":{"202":{"description":"Call Command Say was accepted for processing","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CallCommandResponse"}}}},"400":{"$ref":"#/components/responses/requestError"},"404":{"$ref":"#/components/responses/requestError"},"422":{"$ref":"#/components/responses/validationError"}}}}}}
```

### Example 1: Play an announcement when an outbound call is running

{% tabs %}
{% tab title="Request Headers" %}

```
curl -X POST "https://api.bird.com/workspaces/{workspaceId}/channels/{channelId}/calls/{callId}/say" \
     -H "Authorization: AccessKey YOUR_SECRET_TOKEN"
```

{% endtab %}

{% tab title="Request Body" %}

```
{
  "text": "Hi there my name is earl",
  "locale": "en-US",
  "voice": "female"
}
```

{% endtab %}

{% tab title="Response" %}

```
{
  "id": "9ec389c1-a37c-44b8-b09d-2fec18b5c7c6",
  "callId": "0374a740-390d-4395-a007-8ca87ce9f9c9",
  "command": "say",
  "status": "accepted"
}
```

{% endtab %}
{% endtabs %}