curl --request GET \
  --url https://{subdomain}.mihu.ai/api/v1/agents/{uuid}/channels \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "agent_uuid": "<string>",
    "name": "<string>",
    "channels": [
      "call"
    ],
    "phone_numbers": [
      {
        "phone_number": "<string>",
        "phone_number_uuid": "<string>",
        "channels": [
          "<string>"
        ]
      }
    ]
  }
}