{
  "slug": "nature.observed_share",
  "title": "Classified from OBSERVED tools, of classified",
  "grade": "derived",
  "unit": "ratio",
  "value": 0.5233,
  "as_of": "2026-08-14",
  "sql": "SELECT ROUND(1.0*(SELECT COUNT(*) FROM (SELECT server, natures, MAX(assessed_at) FROM nature_assessments GROUP BY server) WHERE json_extract(natures,'$.evidence')='observed-tools')/(SELECT COUNT(DISTINCT server) FROM nature_assessments),4)",
  "note": "The strong-evidence share; the rest rests on the operator's own description (reported, not observed).",
  "history": [
    {
      "period": "2026-08-15",
      "value": 0.5233
    }
  ]
}