{
  "release": "2026-09-13",
  "methodologyVersion": "0.5.0",
  "candidatesVersion": "2026-08-07",
  "domains": 7422,
  "assessed": 7421,
  "unassessed": 1,
  "headline": {
    "noDiscoverySignal": 4339,
    "noDiscoverySignalPct": 58.5,
    "publishesServerCard": 1681,
    "publishesServerCardPct": 22.7,
    "confirmedHandshake": 1717,
    "confirmedHandshakePct": 23.1
  },
  "byCheck": {
    "D1": 1681,
    "D2": 60,
    "D3": 1411,
    "D4": 1335,
    "D5": 1717,
    "D6": 678,
    "D7": 106,
    "C1": 387,
    "Q1": 524,
    "F1": 4204,
    "F2": 2687
  },
  "candidateDistribution": {
    "mcp-server-card-json": 971,
    "mcp-json": 955,
    "ai-catalog": 258,
    "mcp-bare": 223,
    "mcp-server-serra": 39,
    "server-card-endpoint-relative": 21
  },
  "protocolEra": {
    "legacy": 1071,
    "modern": 646
  },
  "rootAdvertisement": {
    "denominator": 7422,
    "advertising": 106,
    "beyondWellKnown": 60,
    "beyondWellKnownAndNoWellKnownDocument": 47,
    "bySource": {
      "html_link": 48,
      "link_header": 75
    },
    "byTargetRelation": {
      "well_known_path": 58,
      "same_origin": 56,
      "subdomain": 7,
      "third_party": 2
    }
  },
  "cardAgainstRuntime": {
    "denominator": 526,
    "contradicts": 139,
    "contradictedFields": {
      "version": 122,
      "protocolVersion": 21
    },
    "nameDiverges": 142,
    "versionConflictDirection": {
      "cardAhead": 47,
      "cardBehind": 64
    }
  },
  "documentCacheability": {
    "denominator": 2467,
    "etag": {
      "present": 1360,
      "absent": 1107
    },
    "cacheControl": {
      "absent": 563,
      "public_fresh": 1190,
      "public_revalidatable": 553,
      "private_or_no_store": 161
    },
    "contentTypeFamily": {
      "json": 2462,
      "text": 2,
      "other": 2,
      "absent": 1
    }
  }
}