{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "ai-alphabazaar-arena",
  "component": "api",
  "generated_at": "2026-11-05T10:20:48.403Z",
  "tracking_since": "2026-10-12",
  "counts": {
    "critical": 0,
    "security": 10,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a15bd4-3c6f-7381-8dff-5bea9a05b07f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_my_arena_status",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_my_arena_status"
      },
      "occurred_on": "2026-10-21",
      "occurred_at": "2026-10-21 00:19:58.172176+00",
      "observed_since": "2026-10-20",
      "source": "scan",
      "summary": "Tool “get_my_arena_status” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a15bd4-3c6f-7381-8dff-5bea9a05b07f"
    },
    {
      "id": "chg_01a15bd4-3c70-71ab-9ead-d747492feb99",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "join_arena",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "join_arena"
      },
      "occurred_on": "2026-10-21",
      "occurred_at": "2026-10-21 00:19:58.172176+00",
      "observed_since": "2026-10-20",
      "source": "scan",
      "summary": "Tool “join_arena” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a15bd4-3c70-71ab-9ead-d747492feb99"
    },
    {
      "id": "chg_01a1420a-a14e-7af2-8a91-6dc731b3ebe7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_ticker_snapshot",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_ticker_snapshot"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:09:11.757458+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “get_ticker_snapshot” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a1420a-a14e-7af2-8a91-6dc731b3ebe7"
    },
    {
      "id": "chg_01a137b6-fe41-7003-9eb3-db24c8d1f597",
      "kind": "check.verdict",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.hsts_absent",
      "to_code": "headers.hsts_present",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b6-fe41-7003-9eb3-db24c8d1f597"
    },
    {
      "id": "chg_01a137b6-fe95-761f-bddc-66a2dbf0460e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_arena_standings",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_arena_standings"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “get_arena_standings” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b6-fe95-761f-bddc-66a2dbf0460e"
    },
    {
      "id": "chg_01a137b6-fea4-7a07-81a9-eadfd38b5b3b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_daily_brief",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_daily_brief"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “get_daily_brief” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b6-fea4-7a07-81a9-eadfd38b5b3b"
    },
    {
      "id": "chg_01a137b7-002f-73ec-a93d-0b57ad4cba98",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_my_arena_status",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_my_arena_status"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “get_my_arena_status” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b7-002f-73ec-a93d-0b57ad4cba98"
    },
    {
      "id": "chg_01a137b7-00f1-7568-9fea-92632da8de4d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "join_arena",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "join_arena"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “join_arena” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b7-00f1-7568-9fea-92632da8de4d"
    },
    {
      "id": "chg_01a137b7-00f1-7ca2-9d93-1d0600d14113",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "register_webhook",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "register_webhook"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “register_webhook” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b7-00f1-7ca2-9d93-1d0600d14113"
    },
    {
      "id": "chg_01a137b7-00fd-7535-9ee7-39820e252fc6",
      "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": "2026-10-14",
      "occurred_at": "2026-10-14 00:01:39.056086+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-alphabazaar-arena/api#chg-chg_01a137b7-00fd-7535-9ee7-39820e252fc6"
    }
  ],
  "days": [
    {
      "date": "2026-11-04",
      "total": 77,
      "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": "2026-11-03",
        "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": "2026-11-02",
      "total": 76,
      "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": "2026-11-01",
        "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": "2026-10-31",
      "total": 75,
      "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": "2026-10-30",
        "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": "2026-10-29",
      "total": 74,
      "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": "2026-10-28",
        "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
    },
    {
      "date": "2026-10-26",
      "total": 73,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 43,
        "to": 47,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 13,
          "to_days": 14
        },
        "partial": false,
        "compared_to": "2026-10-25",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-24",
      "total": 72,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 37,
        "to": 40,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 11,
          "to_days": 12
        },
        "partial": false,
        "compared_to": "2026-10-23",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-22",
      "total": 71,
      "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": "2026-10-21",
        "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": "2026-10-21",
      "total": 70,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    }
  ]
}