{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-premierletters-mcp",
  "component": "api-mcp",
  "generated_at": "2026-11-05T08:26:41.677Z",
  "tracking_since": "2026-09-21",
  "counts": {
    "critical": 0,
    "security": 8,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a1a60e-89b5-7d96-b15d-0d01f29742e8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_pricing",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_pricing"
      },
      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 10:15:32.979204+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “get_pricing” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a1a60e-89b5-7d96-b15d-0d01f29742e8"
    },
    {
      "id": "chg_01a1631b-7b88-762c-b21f-c7715207dc94",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_order",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_order"
      },
      "occurred_on": "2026-10-22",
      "occurred_at": "2026-10-22 10:15:07.871023+00",
      "observed_since": "2026-10-21",
      "source": "scan",
      "summary": "Tool “create_order” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a1631b-7b88-762c-b21f-c7715207dc94"
    },
    {
      "id": "chg_01a15df3-8988-7f35-a8bc-85b17478c2de",
      "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": "2026-10-21",
      "occurred_at": "2026-10-21 10:13:23.930579+00",
      "observed_since": "2026-10-20",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a15df3-8988-7f35-a8bc-85b17478c2de"
    },
    {
      "id": "chg_01a158cd-413a-7e7a-9c80-cf76e7c62ed5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_order",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_order"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 10:13:28.98701+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “create_order” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a158cd-413a-7e7a-9c80-cf76e7c62ed5"
    },
    {
      "id": "chg_01a158cd-413e-7a54-8920-7b4820ac003c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_pricing",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_pricing"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 10:13:28.98701+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “get_pricing” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a158cd-413e-7a54-8920-7b4820ac003c"
    },
    {
      "id": "chg_01a158cd-4145-79eb-a375-ba24bde69fab",
      "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": "2026-10-20",
      "occurred_at": "2026-10-20 10:13:28.98701+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a158cd-4145-79eb-a375-ba24bde69fab"
    },
    {
      "id": "chg_01a12e54-67b2-7512-84da-091fdb5ed88f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "create_order",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "create_order"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 04:17:25.449883+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Tool “create_order” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a12e54-67b2-7512-84da-091fdb5ed88f"
    },
    {
      "id": "chg_01a12e54-67b4-7c42-affa-1f9dabfba2c8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_pricing",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_pricing"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 04:17:25.449883+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Tool “get_pricing” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-premierletters-mcp/api-mcp#chg-chg_01a12e54-67b4-7c42-affa-1f9dabfba2c8"
    }
  ],
  "days": [
    {
      "date": "2026-11-04",
      "total": 77,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-10-22",
      "total": 78,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-21",
      "total": 78,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-20",
      "total": 77,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 14
    },
    {
      "date": "2026-10-18",
      "total": 78,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 87,
        "to": 90,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 26,
          "to_days": 27
        },
        "partial": false,
        "compared_to": "2026-10-17",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-16",
      "total": 77,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 80,
        "to": 83,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 24,
          "to_days": 25
        },
        "partial": false,
        "compared_to": "2026-10-15",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-14",
      "total": 76,
      "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": "2026-10-13",
        "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": "2026-10-12",
      "total": 75,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    }
  ]
}