Get a guardrail

$curl https://novapai.ai/api/v1/guardrails/550e8400-e29b-41d4-a716-446655440000 \
>-H "Authorization: Bearer <token>"

{
  "data": {
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "name": "Production Guardrail",
    "created_at": "2025-08-24T10:30:00Z",
    "description": "Guardrail for production environment",
    "limit_usd": 100,
    "reset_interval": "monthly",
    "allowed_providers": ["openai", "anthropic", "google"],
    "enforce_zdr": false,
    "updated_at": "2025-08-24T15:45:00Z"
  }
}