curl --request DELETE \
  --url https://app.relyable.ai/api/agents/{id} \
  --header 'Authorization: Bearer <token>'

{
  "message": "<string>",
  "data": {
    "provider": "VAPI",
    "type": "INBOUND",
    "promptType": "SINGLE",
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "name": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>",
    "apiKey": "<string>",
    "assistantId": "<string>",
    "createdByUserId": "<string>",
    "deletedAt": "<string>",
    "language": "<string>",
    "phoneNumber": "<string>",
    "prompt": "<string>",
    "workspaceId": "<string>",
    "callMonitoring": true,
    "isUsingDefaultApiKey": true,
    "webhookUrl": "<string>",
    "phoneNumberId": "<string>",
    "webhookSecret": "<string>"
  }
}