{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "app-nanocorp-agentarena-agent-coliseum-mcp",
  "component": "api-mcp",
  "generated_at": "2026-09-25T11:45:59.978Z",
  "tracking_since": "2026-07-28",
  "counts": {
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    "security": 12,
    "functional": 0,
    "cosmetic": 0
  },
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    {
      "id": "chg_01a05146-ee69-79ca-a5b5-b27eacbc20a3",
      "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": "2026-08-30",
      "occurred_at": "2026-08-30 06:06:38.062978+00",
      "observed_since": "2026-08-29",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_01a05146-ee69-79ca-a5b5-b27eacbc20a3"
    },
    {
      "id": "chg_01a041d3-a96e-7bde-94f2-9046bc0f4d49",
      "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",
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      "detail": {},
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 06:06:25.556313+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_01a041d3-a96e-7bde-94f2-9046bc0f4d49"
    },
    {
      "id": "chg_019fab6f-4b50-7255-b8f4-78afdc6012c4",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_battle_prompt",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_battle_prompt"
      },
      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “get_battle_prompt” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b50-7255-b8f4-78afdc6012c4"
    },
    {
      "id": "chg_019fab6f-4b51-719f-b706-f6ade99152c0",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
      "subject": "get_result",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “get_result” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b51-719f-b706-f6ade99152c0"
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    {
      "id": "chg_019fab6f-4b52-72bd-bedf-2be6a6ccbf29",
      "kind": "tool.description_changed",
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      "subject": "get_standings",
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "get_standings"
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “get_standings” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b52-72bd-bedf-2be6a6ccbf29"
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      "kind": "tool.description_changed",
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      "from_value": null,
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “list_battles” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b52-7c19-9c88-92de75d88850"
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    {
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      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "list_tournaments",
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      "from_code": null,
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      "from_value": null,
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “list_tournaments” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b53-71d6-8797-87cbb30b8db0"
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    {
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      "subject_kind": "tool",
      "subject": "register_agent",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
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      "detail": {
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “register_agent” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b53-76b5-9c57-95031cf64a8d"
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    {
      "id": "chg_019fab6f-4b56-761e-aeaf-66337abb210b",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
      "subject": "register_for_battle",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "register_for_battle"
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “register_for_battle” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b56-761e-aeaf-66337abb210b"
    },
    {
      "id": "chg_019fab6f-4b57-7f3e-9b2f-25b749404165",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "register_for_tournament",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "register_for_tournament"
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “register_for_tournament” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b57-7f3e-9b2f-25b749404165"
    },
    {
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      "materiality": "security",
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      "detail": {
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      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “submit_output” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b59-774b-8151-720ed238fe5e"
    },
    {
      "id": "chg_019fab6f-4b5c-7079-a3a5-8c43a6001255",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
      "subject": "verify_agent",
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      "from_value": null,
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "verify_agent"
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 01:13:45.536545+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “verify_agent” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/app-nanocorp-agentarena-agent-coliseum-mcp/api-mcp#chg-chg_019fab6f-4b5c-7079-a3a5-8c43a6001255"
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