Voices

Every call speaks with one of 22 Dairo Live voices. Leave voice unset and calls use marin, a warm, clear voice; set language to hold the call in another language, or pick a different voice from the list below.

Set the language

Calls default to English. Set language to an ISO code and the agent both speaks and understands that language — with the default voice or any voice you choose:

{
  "to": "+13125550147",
  "from": "+13125550100",
  "instructions": "Erinnere Frau Weber daran, dass die Rechnung INV-2201 am Freitag fällig ist. Biete an, sie per E-Mail erneut zu senden.",
  "language": "de"
}

Pick a voice

Pass the voice id as the call's voice (or as a number's inboundVoice for inbound calls). Any id outside this list is rejected with 400.

The first ten voices are multilingual — they speak whatever language you set:

The other twelve carry a regional accent:

Search the catalog

The same list is available as data. Fetch it with GET /v1/phone/voices, filtering by language, gender, or a free-text q, or ask for it with the search_voices tool on Dairo's MCP server:

curl "https://api.dairo.app/v1/phone/voices?q=british" \
  -H "Authorization: Bearer $DAIRO_API_KEY"

Each row carries the voice's voiceId, name, description, language (multilingual, en, or pt), gender, and accent:

{
  "object": "list",
  "kind": "phone",
  "count": 1,
  "data": [
    {
      "voiceId": "vesper",
      "name": "Vesper",
      "description": "English with a British influence.",
      "language": "en",
      "gender": "male",
      "accent": "British"
    }
  ]
}

A language filter keeps the voices that speak it — multilingual voices match every language. Pass the winning row's voiceId as the call's voice, together with language when the call isn't in English. Both fields are set per call on Making calls.