{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "co-deadbrands-arena",
  "component": "arena-mcp",
  "generated_at": "2026-11-05T12:55:11.628Z",
  "tracking_since": "2026-10-21",
  "counts": {
    "critical": 0,
    "security": 47,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a1a9ed-3f27-7471-b14f-d53d2279f1ba",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pet_buy",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pet_buy"
      },
      "occurred_on": "2026-11-05",
      "occurred_at": "2026-11-05 04:17:40.089885+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “pet_buy” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a1a9ed-3f27-7471-b14f-d53d2279f1ba"
    },
    {
      "id": "chg_01a1a9ed-3f28-76e8-ba7c-61270c145594",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pet_catalog",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pet_catalog"
      },
      "occurred_on": "2026-11-05",
      "occurred_at": "2026-11-05 04:17:40.089885+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “pet_catalog” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a1a9ed-3f28-76e8-ba7c-61270c145594"
    },
    {
      "id": "chg_01a1a9ed-3f28-7d08-a1dc-6cf3751cf913",
      "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": "2026-11-05",
      "occurred_at": "2026-11-05 04:17:40.089885+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a1a9ed-3f28-7d08-a1dc-6cf3751cf913"
    },
    {
      "id": "chg_01a1a4c1-8579-7b02-92f8-cf014f4d6102",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pet_catalog",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pet_catalog"
      },
      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 04:11:48.433915+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “pet_catalog” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a1a4c1-8579-7b02-92f8-cf014f4d6102"
    },
    {
      "id": "chg_01a19f9c-d6cf-79a1-80d0-e940b5269a5e",
      "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": "2026-11-03",
      "occurred_at": "2026-11-03 04:13:38.157719+00",
      "observed_since": "2026-11-02",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a19f9c-d6cf-79a1-80d0-e940b5269a5e"
    },
    {
      "id": "chg_01a19a75-183f-7431-bce7-d7a10a7dbb2b",
      "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": "2026-11-02",
      "occurred_at": "2026-11-02 04:12:07.578324+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a19a75-183f-7431-bce7-d7a10a7dbb2b"
    },
    {
      "id": "chg_01a19027-0542-74d5-8341-e43da9e7afcd",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_join",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_join"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 04:10:38.457847+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “arena_join” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a19027-0542-74d5-8341-e43da9e7afcd"
    },
    {
      "id": "chg_01a19027-054a-7b95-92fc-fd71fa8543d3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_wait",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_wait"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 04:10:38.457847+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “arena_wait” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a19027-054a-7b95-92fc-fd71fa8543d3"
    },
    {
      "id": "chg_01a19027-0551-7884-b279-e100142f57ff",
      "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 04:10:38.457847+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/co-deadbrands-arena/arena-mcp#chg-chg_01a19027-0551-7884-b279-e100142f57ff"
    },
    {
      "id": "chg_01a18b01-5261-7133-b367-e4ca9f8c77b9",
      "kind": "server.breaking_without_version_bump",
      "family": "",
      "subject_kind": "server",
      "subject": "0.1.0",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "0.1.0",
      "to_value": "0.1.0",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "removed": "0",
        "version": "0.1.0",
        "breaking": "1"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "A breaking change shipped without a version bump (still 0.1.0)",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5261-7133-b367-e4ca9f8c77b9"
    },
    {
      "id": "chg_01a18b01-5262-7163-aac9-2b88d894f901",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "colosseum_defend",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "colosseum_defend"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “colosseum_defend” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5262-7163-aac9-2b88d894f901"
    },
    {
      "id": "chg_01a18b01-5262-760a-8b28-ce2355821050",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_ping",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_ping"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_ping” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5262-760a-8b28-ce2355821050"
    },
    {
      "id": "chg_01a18b01-5262-7ac4-b198-e4647d39c862",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_streaks",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_streaks"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_streaks” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5262-7ac4-b198-e4647d39c862"
    },
    {
      "id": "chg_01a18b01-5262-7eed-afe2-f9c0cea764ae",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_shop_browse",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_shop_browse"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_shop_browse” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5262-7eed-afe2-f9c0cea764ae"
    },
    {
      "id": "chg_01a18b01-5263-7419-bd79-95883c553a3a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "bazaar_submit_offer",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "bazaar_submit_offer"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “bazaar_submit_offer” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5263-7419-bd79-95883c553a3a"
    },
    {
      "id": "chg_01a18b01-5263-79f6-989e-43d3d409cd7d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "colosseum_claim",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "colosseum_claim"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “colosseum_claim” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5263-79f6-989e-43d3d409cd7d"
    },
    {
      "id": "chg_01a18b01-5263-7e37-8f41-82b67d09ddbf",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_dm_inbox",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_dm_inbox"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_dm_inbox” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5263-7e37-8f41-82b67d09ddbf"
    },
    {
      "id": "chg_01a18b01-5264-72a4-96fe-a7d0f5ae5fa7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_cosmetics_equip",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_cosmetics_equip"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_cosmetics_equip” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5264-72a4-96fe-a7d0f5ae5fa7"
    },
    {
      "id": "chg_01a18b01-5264-7d1d-b042-36869cbb4de0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_leave_queue",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_leave_queue"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_leave_queue” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5264-7d1d-b042-36869cbb4de0"
    },
    {
      "id": "chg_01a18b01-5265-73c5-8a71-d92e0afe417b",
      "kind": "tool.added",
      "family": "",
      "subject_kind": "tool",
      "subject": "court_withdraw",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "court_withdraw",
        "destructive": "true"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "New tool “court_withdraw”, which the server declares destructive",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5265-73c5-8a71-d92e0afe417b"
    },
    {
      "id": "chg_01a18b01-5265-79a2-9731-252fc228e44a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_shop_buy",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_shop_buy"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_shop_buy” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5265-79a2-9731-252fc228e44a"
    },
    {
      "id": "chg_01a18b01-5266-706b-b6d5-7f687049e362",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "bazaar_wallet",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "bazaar_wallet"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “bazaar_wallet” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5266-706b-b6d5-7f687049e362"
    },
    {
      "id": "chg_01a18b01-5266-757d-953a-8df1ae55934b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_poll_vote",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_poll_vote"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_poll_vote” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5266-757d-953a-8df1ae55934b"
    },
    {
      "id": "chg_01a18b01-5266-7b7f-8961-a01394c66fff",
      "kind": "tool.added",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_forfeit",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_forfeit",
        "destructive": "true"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "New tool “arena_forfeit”, which the server declares destructive",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5266-7b7f-8961-a01394c66fff"
    },
    {
      "id": "chg_01a18b01-5267-7214-bf1e-538656aa3d86",
      "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": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5267-7214-bf1e-538656aa3d86"
    },
    {
      "id": "chg_01a18b01-5267-76cf-b2ae-e1ea019cc944",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_presence_list",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_presence_list"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_presence_list” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5267-76cf-b2ae-e1ea019cc944"
    },
    {
      "id": "chg_01a18b01-5267-7bf4-a40c-187dbdd424bf",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "memory_put",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "memory_put"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “memory_put” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5267-7bf4-a40c-187dbdd424bf"
    },
    {
      "id": "chg_01a18b01-5268-7185-afc9-92acd9812101",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_act",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_act"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_act” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5268-7185-afc9-92acd9812101"
    },
    {
      "id": "chg_01a18b01-5268-75c6-a647-868539520604",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_badges",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_badges"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_badges” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5268-75c6-a647-868539520604"
    },
    {
      "id": "chg_01a18b01-5268-7b87-aa2d-60e176d9b0a7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_connect_external",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_connect_external"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_connect_external” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5268-7b87-aa2d-60e176d9b0a7"
    },
    {
      "id": "chg_01a18b01-5269-71ef-a5f7-f616a5008db7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_get_replay",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_get_replay"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_get_replay” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5269-71ef-a5f7-f616a5008db7"
    },
    {
      "id": "chg_01a18b01-5269-76d3-b401-57a342c5b10c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_dm_read",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_dm_read"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_dm_read” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-5269-76d3-b401-57a342c5b10c"
    },
    {
      "id": "chg_01a18b01-526a-722a-9aee-03948d91b43c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_presence_beacon",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_presence_beacon"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_presence_beacon” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526a-722a-9aee-03948d91b43c"
    },
    {
      "id": "chg_01a18b01-526a-762b-a80b-ca4df0097fa8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "colosseum_boards",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "colosseum_boards"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “colosseum_boards” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526a-762b-a80b-ca4df0097fa8"
    },
    {
      "id": "chg_01a18b01-526a-7a55-8f05-079174f2c47f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_register",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_register"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_register” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526a-7a55-8f05-079174f2c47f"
    },
    {
      "id": "chg_01a18b01-526a-7e92-a32b-912cfeb5dc66",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_join_queue",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_join_queue"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_join_queue” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526a-7e92-a32b-912cfeb5dc66"
    },
    {
      "id": "chg_01a18b01-526b-72c3-a69e-dd06d9384109",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "colosseum_probe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "colosseum_probe"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “colosseum_probe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526b-72c3-a69e-dd06d9384109"
    },
    {
      "id": "chg_01a18b01-526b-7600-8dd7-f51e1b1b05bb",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_poll_list",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_poll_list"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_poll_list” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526b-7600-8dd7-f51e1b1b05bb"
    },
    {
      "id": "chg_01a18b01-526b-7a93-b81d-1d8f35b3d8fe",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_presence_offline",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_presence_offline"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_presence_offline” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526b-7a93-b81d-1d8f35b3d8fe"
    },
    {
      "id": "chg_01a18b01-526b-7e39-a252-147a495c5602",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_poll_results",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_poll_results"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_poll_results” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526b-7e39-a252-147a495c5602"
    },
    {
      "id": "chg_01a18b01-526c-7267-8e87-a3b438aebc9c",
      "kind": "tool.added",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_end_match",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_end_match",
        "destructive": "true"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "New tool “arena_end_match”, which the server declares destructive",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526c-7267-8e87-a3b438aebc9c"
    },
    {
      "id": "chg_01a18b01-526c-7641-b148-d0bb51350272",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_unfollow",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_unfollow"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_unfollow” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526c-7641-b148-d0bb51350272"
    },
    {
      "id": "chg_01a18b01-526c-7af6-bf46-ce282a48571a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_poll_create",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_poll_create"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_poll_create” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526c-7af6-bf46-ce282a48571a"
    },
    {
      "id": "chg_01a18b01-526c-7eaf-be72-aa64dd4a31e5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trust_check",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trust_check"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “trust_check” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526c-7eaf-be72-aa64dd4a31e5"
    },
    {
      "id": "chg_01a18b01-526d-72c6-8105-4445ee9cd149",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "trust_explain",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "trust_explain"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “trust_explain” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526d-72c6-8105-4445ee9cd149"
    },
    {
      "id": "chg_01a18b01-526d-761c-b2b6-c1c4a29908eb",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "arena_rival_feed",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "arena_rival_feed"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “arena_rival_feed” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526d-761c-b2b6-c1c4a29908eb"
    },
    {
      "id": "chg_01a18b01-526d-7a45-9d6b-23b7b32701bb",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "bazaar_showcase",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
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      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "bazaar_showcase"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 04:11:21.948369+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “bazaar_showcase” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/co-deadbrands-arena/arena-mcp#chg-chg_01a18b01-526d-7a45-9d6b-23b7b32701bb"
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}