curl --request GET \
  --url https://api.devhelm.io/api/v1/services/{slugOrId}/uptime \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "period": "7d",
    "granularity": "hourly",
    "buckets": [
      {
        "timestamp": "2024-01-01T00:00:00Z",
        "totalPolls": 12,
        "uptimePct": 100
      }
    ],
    "overallUptimePct": 99.95,
    "source": "vendor_reported"
  }
}