{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-trivago-mcp-mcp",
  "component": "mcp",
  "generated_at": "2026-11-05T17:00:34.375Z",
  "tracking_since": "2026-10-21",
  "counts": {
    "critical": 0,
    "security": 10,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a17bf4-fdba-77f9-87c0-18d8d917451d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-radius-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-radius-search"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 06:03:35.706692+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-radius-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a17bf4-fdba-77f9-87c0-18d8d917451d"
    },
    {
      "id": "chg_01a17bf4-fdbe-70b6-9e50-5fadde13e63c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-search"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 06:03:35.706692+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a17bf4-fdbe-70b6-9e50-5fadde13e63c"
    },
    {
      "id": "chg_01a17bf4-fdc2-7328-b6cb-a6edc51ae180",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 06:03:35.706692+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a17bf4-fdc2-7328-b6cb-a6edc51ae180"
    },
    {
      "id": "chg_01a16759-a310-7494-a300-cc7238f2e04d",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.churn",
      "from_value": "0.03",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "2",
        "added": "0",
        "breaks": "2",
        "removed": "0",
        "auth_transport": "0"
      },
      "occurred_on": "2026-10-23",
      "occurred_at": "2026-10-23 06:01:30.1031+00",
      "observed_since": "2026-10-22",
      "source": "scan",
      "summary": "Stability (0.03 → fail)",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16759-a310-7494-a300-cc7238f2e04d"
    },
    {
      "id": "chg_01a16759-a312-7d6e-b0ec-9a24601f283e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-radius-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-radius-search"
      },
      "occurred_on": "2026-10-23",
      "occurred_at": "2026-10-23 06:01:30.1031+00",
      "observed_since": "2026-10-22",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-radius-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16759-a312-7d6e-b0ec-9a24601f283e"
    },
    {
      "id": "chg_01a16759-a318-7b84-93a9-baec07cbbe69",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-search"
      },
      "occurred_on": "2026-10-23",
      "occurred_at": "2026-10-23 06:01:30.1031+00",
      "observed_since": "2026-10-22",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16759-a318-7b84-93a9-baec07cbbe69"
    },
    {
      "id": "chg_01a16759-a31e-7685-a496-11ac8cc820fc",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-destination-price-trends",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-destination-price-trends"
      },
      "occurred_on": "2026-10-23",
      "occurred_at": "2026-10-23 06:01:30.1031+00",
      "observed_since": "2026-10-22",
      "source": "scan",
      "summary": "Tool “trivago-destination-price-trends” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16759-a31e-7685-a496-11ac8cc820fc"
    },
    {
      "id": "chg_01a16233-7dc8-7718-890a-789d3ebebc27",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-radius-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-radius-search"
      },
      "occurred_on": "2026-10-22",
      "occurred_at": "2026-10-22 06:01:44.094536+00",
      "observed_since": "2026-10-21",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-radius-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16233-7dc8-7718-890a-789d3ebebc27"
    },
    {
      "id": "chg_01a16233-7dca-7b64-a90f-340d5c54d937",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-accommodation-search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-accommodation-search"
      },
      "occurred_on": "2026-10-22",
      "occurred_at": "2026-10-22 06:01:44.094536+00",
      "observed_since": "2026-10-21",
      "source": "scan",
      "summary": "Tool “trivago-accommodation-search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16233-7dca-7b64-a90f-340d5c54d937"
    },
    {
      "id": "chg_01a16233-7dce-718d-bcf9-6ed6b311b4c0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trivago-destination-price-trends",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trivago-destination-price-trends"
      },
      "occurred_on": "2026-10-22",
      "occurred_at": "2026-10-22 06:01:44.094536+00",
      "observed_since": "2026-10-21",
      "source": "scan",
      "summary": "Tool “trivago-destination-price-trends” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-trivago-mcp-mcp/mcp#chg-chg_01a16233-7dce-718d-bcf9-6ed6b311b4c0"
    }
  ],
  "days": [
    {
      "date": "2026-11-04",
      "total": 72,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 10,
        "to": 13,
        "delta": 3,
        "others": [],
        "accrual": null,
        "partial": false,
        "compared_to": "2026-11-03",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 10 to 13."
      },
      "event_count": 0
    },
    {
      "date": "2026-11-02",
      "total": 71,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 3,
        "to": 7,
        "delta": 4,
        "others": [],
        "accrual": null,
        "partial": false,
        "compared_to": "2026-11-01",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 3 to 7."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-28",
      "total": 70,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-27",
      "total": 70,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 21
    },
    {
      "date": "2026-10-24",
      "total": 71,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-23",
      "total": 71,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 43
    },
    {
      "date": "2026-10-22",
      "total": 71,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-10-21",
      "total": 70,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}