{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "ai-yetty-yetty",
  "component": "mcp",
  "generated_at": "2026-09-21T02:16:13.568Z",
  "tracking_since": "2026-08-21",
  "counts": {
    "critical": 0,
    "security": 12,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0bcc7-c1ad-77e4-8421-791a438df2d0",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.stable",
      "from_value": "0.97",
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 03:06:42.898475+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a0bcc7-c1ad-77e4-8421-791a438df2d0"
    },
    {
      "id": "chg_01a09de1-6e68-7263-b3f6-1ca2bfb8209c",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 03:06:31.826984+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a09de1-6e68-7263-b3f6-1ca2bfb8209c"
    },
    {
      "id": "chg_01a06f87-5e11-753f-9da1-a731879e395f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_claim_status",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_claim_status"
      },
      "occurred_on": "2026-09-05",
      "occurred_at": "2026-09-05 03:05:37.454056+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “yetty_claim_status” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a06f87-5e11-753f-9da1-a731879e395f"
    },
    {
      "id": "chg_01a06f87-5e12-7728-b6bd-e112ae399aa9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_login",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_login"
      },
      "occurred_on": "2026-09-05",
      "occurred_at": "2026-09-05 03:05:37.454056+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “yetty_login” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a06f87-5e12-7728-b6bd-e112ae399aa9"
    },
    {
      "id": "chg_01a06f87-5e12-7cbf-92af-f5f7c36e7a5c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_login_status",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_login_status"
      },
      "occurred_on": "2026-09-05",
      "occurred_at": "2026-09-05 03:05:37.454056+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “yetty_login_status” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a06f87-5e12-7cbf-92af-f5f7c36e7a5c"
    },
    {
      "id": "chg_01a06f87-5e13-728c-aef6-ebba6d55dd70",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_signup"
      },
      "occurred_on": "2026-09-05",
      "occurred_at": "2026-09-05 03:05:37.454056+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “yetty_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a06f87-5e13-728c-aef6-ebba6d55dd70"
    },
    {
      "id": "chg_01a06f87-5e13-7b89-8116-d34c7e7e8d58",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 03:05:37.454056+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a06f87-5e13-7b89-8116-d34c7e7e8d58"
    },
    {
      "id": "chg_01a04655-3ff3-7152-aa83-4161bc98e74c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_pull_template",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_pull_template"
      },
      "occurred_on": "2026-08-28",
      "occurred_at": "2026-08-28 03:06:27.092486+00",
      "observed_since": "2026-08-27",
      "source": "scan",
      "summary": "Tool “yetty_pull_template” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a04655-3ff3-7152-aa83-4161bc98e74c"
    },
    {
      "id": "chg_01a0412e-dfed-756b-9871-2f015a1ad699",
      "kind": "check.reverified",
      "family": "tool-safety-manipulation",
      "subject_kind": "check",
      "subject": "tool-safety-manipulation",
      "subject_child": "",
      "from_code": "toolsafety.manipulation_unjudged",
      "to_code": "toolsafety.manipulation_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "units": "11",
        "judged": "11"
      },
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 03:06:26.118055+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Judged manipulation (unverified → pass)",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a0412e-dfed-756b-9871-2f015a1ad699"
    },
    {
      "id": "chg_01a0412e-dfee-7c7e-81bd-de371ce88736",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "yetty_pull_template",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "yetty_pull_template"
      },
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 03:06:26.118055+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Tool “yetty_pull_template” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a0412e-dfee-7c7e-81bd-de371ce88736"
    },
    {
      "id": "chg_01a036e1-d558-7b15-942f-b7db55f5154e",
      "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": "2026-08-25",
      "occurred_at": "2026-08-25 03:06:04.92248+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a036e1-d558-7b15-942f-b7db55f5154e"
    },
    {
      "id": "chg_01a02a6a-5b4f-7d5c-9a39-29dc992a5ef4",
      "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": "2026-08-22",
      "occurred_at": "2026-08-22 17:00:08.310972+00",
      "observed_since": "2026-08-22",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-yetty-yetty/mcp#chg-chg_01a02a6a-5b4f-7d5c-9a39-29dc992a5ef4"
    }
  ],
  "days": [
    {
      "date": "2026-09-20",
      "total": 86,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-19",
      "total": 86,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 93,
        "to": 97,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 28,
          "to_days": 29
        },
        "partial": false,
        "compared_to": "2026-09-18",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-16",
      "total": 85,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 83,
        "to": 87,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 25,
          "to_days": 26
        },
        "partial": false,
        "compared_to": "2026-09-15",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-14",
      "total": 84,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-09-13",
      "total": 84,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 73,
        "to": 77,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 22,
          "to_days": 23
        },
        "partial": false,
        "compared_to": "2026-09-12",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-11",
      "total": 83,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 67,
        "to": 70,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 20,
          "to_days": 21
        },
        "partial": false,
        "compared_to": "2026-09-10",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-09",
      "total": 82,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 60,
        "to": 63,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 18,
          "to_days": 19
        },
        "partial": false,
        "compared_to": "2026-09-08",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-07",
      "total": 81,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 53,
        "to": 57,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 16,
          "to_days": 17
        },
        "partial": false,
        "compared_to": "2026-09-06",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    }
  ]
}