curl --request GET \
  --url https://server.promptwatch.com/api/v2/content-gap/stats \
  --header 'X-API-Key: <api-key>'

{
  "totalPromptsWithCoverage": 123,
  "totalPromptsWithoutCoverage": 123,
  "averageCoverageScore": 123,
  "distribution": {
    "low": 123,
    "medium": 123,
    "good": 123,
    "excellent": 123
  },
  "byPromptType": [
    {
      "category": "ORGANIC",
      "averageScore": 123,
      "count": 123,
      "totalPrompts": 123
    }
  ],
  "byIntentType": [
    {
      "category": "BRANDED",
      "averageScore": 123,
      "count": 123,
      "totalPrompts": 123
    }
  ]
}