curl --request GET \
  --url https://api.getgranite.ai/api/analytics/endpoint-usage

{
  "data": [
    {
      "endpoint_slug": "<string>",
      "http_method": "<string>",
      "invocations": 123,
      "success_count": 123,
      "success_rate": 123,
      "avg_response_time_ms": 123,
      "p95_response_time_ms": 123
    }
  ]
}