{
  "id": "key_abc123def456",
  "api_key_id": "550e8400-e29b-41d4-a716-446655440000",
  "api_key_name": "Production API Key",
  "team_id": "660e8400-e29b-41d4-a716-446655440000",
  "period": {
    "start": "2025-01-01T00:00:00Z",
    "end": "2025-01-31T23:59:59Z"
  },
  "total_cost_usd": 45.67,
  "cost_breakdown": [
    {
      "price_id": "price_neural_search",
      "price_name": "Neural Search",
      "quantity": 1000,
      "amount_usd": 30
    },
    {
      "price_id": "price_content_retrieval",
      "price_name": "Content Retrieval",
      "quantity": 500,
      "amount_usd": 15.67
    }
  ],
  "metadata": {
    "generated_at": "2025-02-01T10:30:00Z"
  }
}

{
  "error": "Invalid API key ID format."
}

{
  "error": "Unauthorized"
}

{
  "error": "API key not found"
}

{
  "error": "Failed to fetch usage data. Please try again later."
}