{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-heystacks-heystack",
  "component": "heystacks",
  "generated_at": "2026-11-05T08:21:05.675Z",
  "tracking_since": "2026-10-26",
  "counts": {
    "critical": 0,
    "security": 18,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a18ff8-b626-70f5-a520-7a7874db3720",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_markdown",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_markdown"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 03:20:03.693409+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “create_markdown” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18ff8-b626-70f5-a520-7a7874db3720"
    },
    {
      "id": "chg_01a18ff8-b629-7038-99fe-50de3fb607fe",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "read_document",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "read_document"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 03:20:03.693409+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “read_document” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18ff8-b629-7038-99fe-50de3fb607fe"
    },
    {
      "id": "chg_01a18ff8-b629-794a-8fa3-672e55738fe9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_documents",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_documents"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 03:20:03.693409+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “search_documents” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18ff8-b629-794a-8fa3-672e55738fe9"
    },
    {
      "id": "chg_01a18ff8-b62a-7014-bf59-ee755c8d3c62",
      "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": "2026-10-31",
      "occurred_at": "2026-10-31 03:20:03.693409+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18ff8-b62a-7014-bf59-ee755c8d3c62"
    },
    {
      "id": "chg_01a185b0-965a-7b0c-9481-2439136658a3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "edit_markdown",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "edit_markdown"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 03:25:04.802538+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “edit_markdown” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a185b0-965a-7b0c-9481-2439136658a3"
    },
    {
      "id": "chg_01a185b0-965b-7939-92e8-50794deef37f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "read_activity",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "read_activity"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 03:25:04.802538+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “read_activity” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a185b0-965b-7939-92e8-50794deef37f"
    },
    {
      "id": "chg_01a185b0-965d-7c31-926c-64d5476abaec",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "read_document",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "read_document"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 03:25:04.802538+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “read_document” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a185b0-965d-7c31-926c-64d5476abaec"
    },
    {
      "id": "chg_01a185b0-965e-79c8-b741-9b2c145216c8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "read_profile",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "read_profile"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 03:25:04.802538+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “read_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a185b0-965e-79c8-b741-9b2c145216c8"
    },
    {
      "id": "chg_01a185b0-965f-701f-8417-d7fdc06f7f92",
      "kind": "tool.added",
      "family": "",
      "subject_kind": "tool",
      "subject": "review_suggestion",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "review_suggestion",
        "destructive": "true"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 03:25:04.802538+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "New tool “review_suggestion”, which the server declares destructive",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a185b0-965f-701f-8417-d7fdc06f7f92"
    },
    {
      "id": "chg_01a18087-f6c0-79c8-9e89-54a17a01ab96",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_markdown",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_markdown"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “create_markdown” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6c0-79c8-9e89-54a17a01ab96"
    },
    {
      "id": "chg_01a18087-f6c1-75ac-bc22-9039a4fda99b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_spreadsheet",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_spreadsheet"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “create_spreadsheet” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6c1-75ac-bc22-9039a4fda99b"
    },
    {
      "id": "chg_01a18087-f6c2-7f3f-b9dd-f79fee9b4bcd",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "delete",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "delete"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “delete” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6c2-7f3f-b9dd-f79fee9b4bcd"
    },
    {
      "id": "chg_01a18087-f6c4-7845-a3ef-460f947b6a30",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "edit_markdown",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "edit_markdown"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “edit_markdown” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6c4-7845-a3ef-460f947b6a30"
    },
    {
      "id": "chg_01a18087-f6c8-79f8-ae43-070b57bcb9bb",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "edit_spreadsheet",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "edit_spreadsheet"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “edit_spreadsheet” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6c8-79f8-ae43-070b57bcb9bb"
    },
    {
      "id": "chg_01a18087-f6cd-7b9d-a0bc-8da1e438425b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "read_rules",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "read_rules"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “read_rules” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6cd-7b9d-a0bc-8da1e438425b"
    },
    {
      "id": "chg_01a18087-f6f1-78ce-8440-dc1b3701eae1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_documents",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_documents"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “search_documents” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6f1-78ce-8440-dc1b3701eae1"
    },
    {
      "id": "chg_01a18087-f6f4-748c-8d30-2b14c1988fad",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "suggest_edit",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "suggest_edit"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “suggest_edit” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6f4-748c-8d30-2b14c1988fad"
    },
    {
      "id": "chg_01a18087-f6f7-7984-b98c-3dca62e0b91b",
      "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": "2026-10-28",
      "occurred_at": "2026-10-28 03:22:36.394514+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-heystacks-heystack/heystacks#chg-chg_01a18087-f6f7-7984-b98c-3dca62e0b91b"
    }
  ],
  "days": [
    {
      "date": "2026-11-05",
      "total": 65,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 30,
        "to": 33,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 9,
          "to_days": 10
        },
        "partial": false,
        "compared_to": "2026-11-04",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-11-02",
      "total": 64,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-31",
      "total": 63,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 4
    },
    {
      "date": "2026-10-29",
      "total": 62,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 9
    },
    {
      "date": "2026-10-28",
      "total": 62,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 17
    },
    {
      "date": "2026-10-27",
      "total": 61,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-10-26",
      "total": 61,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}