curl --request POST 'https://api.voicecheap.ai/v1/actions/tts_get' \
  --header "x-api-key: $VOICECHEAP_API_KEY" \
  --header 'Content-Type: application/json' \
  --data '{"historyId":"722c80c6412edd4c3dcd625061e1c1feafbb0d54274d95fd8b5ca047f8cdd23d"}'

const input = {
  historyId: '722c80c6412edd4c3dcd625061e1c1feafbb0d54274d95fd8b5ca047f8cdd23d',
};
const response = await fetch('https://api.voicecheap.ai/v1/actions/tts_get', {
  method: 'POST',
  headers: {
    'x-api-key': process.env.VOICECHEAP_API_KEY,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(input),
});
const body = await response.json();
if (!response.ok) throw new Error(body.code + ': ' + body.message);
console.log(body);

import os
import requests

response = requests.post(
    "https://api.voicecheap.ai/v1/actions/tts_get",
    headers={"x-api-key": os.environ["VOICECHEAP_API_KEY"]},
    json={"historyId": "722c80c6412edd4c3dcd625061e1c1feafbb0d54274d95fd8b5ca047f8cdd23d"},
    timeout=120,
)
body = response.json()
if not response.ok:
    raise RuntimeError(f"{body.get('code')}: {body.get('message')}")
print(body)

{
  "data": {
    "historyId": "722c80c6412edd4c3dcd625061e1c1feafbb0d54274d95fd8b5ca047f8cdd23d",
    "text": "Hello world.",
    "spokenText": "Hello world.",
    "voice": "933563129e564b19a115bedd57b7406a",
    "voiceName": "Sarah",
    "voiceSource": "catalog",
    "inputType": "text",
    "instructionPreset": "narrator",
    "instructions": "Speak clearly and leave a short pause at the end.",
    "speed": 1,
    "sourceFileName": "launch-script.txt",
    "characterCount": 12,
    "durationSeconds": 1.5,
    "previewEndIndex": null,
    "createdAt": 1792152000000,
    "updatedAt": 1792152000000,
    "status": "success",
    "audioUrl": "https://files.example.com/launch-script.mp3",
    "wordAlignment": [
      {
        "text": "Hello",
        "startSeconds": 0,
        "endSeconds": 0.6,
        "sourceStartCharacterIndex": 0,
        "sourceEndCharacterIndex": 5
      },
      {
        "text": "world.",
        "startSeconds": 0.7,
        "endSeconds": 1.4,
        "sourceStartCharacterIndex": 6,
        "sourceEndCharacterIndex": 12
      }
    ]
  }
}