curl -X POST "http://localhost:8000/api/v2/agents" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": "customer-support",
    "pattern": "support",
    "description": "Handles customer inquiries"
  }'

{
  "agent_id": "customer-support",
  "namespace": "memanto_agent_customer-support",
  "pattern": "support",
  "description": "Handles customer inquiries",
  "created_at": "2026-05-04T10:30:00.000000",
  "last_session": null,
  "memory_count": 0,
  "session_count": 0,
  "status": "ready"
}

{
  "detail": "Unauthorized. Agent management endpoints require either a loopback client or a valid management credential (Authorization: Bearer <key> or X-Api-Key)."
}

{
  "detail": {
    "error": "AgentAlreadyExists",
    "message": "Agent 'customer-support' already exists",
    "details": {}
  }
}

{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "body",
        "agent_id"
      ],
      "msg": "Field required",
      "input": {}
    }
  ]
}

{
  "detail": {
    "error": "InternalServerError",
    "message": "An unexpected error occurred",
    "details": {
      "original_error": "..."
    }
  }
}