curl --request POST \
  --url https://api.voice.ai/agent/v1/agent/search-phone-numbers \
  --header 'Content-Type: application/json' \
  --data '
{
  "country_code": "US",
  "area_code": "<string>",
  "provider": "twilio"
}
'

{
  "results": [
    {
      "phone_number": "<string>",
      "country_code": "<string>",
      "locality": "<string>",
      "region": "<string>"
    }
  ],
  "total_results": 0
}