curl --request POST \
  --url https://api.example.com/utility/validate \
  --header 'API-Key: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "john.doe@example.com",
  "phone": "+15551234567",
  "first_name": "John",
  "last_name": "Doe",
  "domain": "google.com",
  "company": "Google LLC"
}
'

{
  "valid": true,
  "errors": [],
  "warnings": [
    {
      "field": "phone",
      "value": "+15551234567",
      "warning": "Phone number uses reserved 555 prefix",
      "suggestion": null
    }
  ],
  "suggestions": [
    {
      "field": "company",
      "cleaned": {
        "name": "google",
        "type": "name"
      }
    }
  ]
}