{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "pipeworx-io-seoul-data",
  "component": "seoul-data-mcp",
  "generated_at": "2026-11-06T03:43:42.206Z",
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      "occurred_at": "2026-11-05 02:34:42.594527+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc67-73ea-bc97-a4ba4091baa6"
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    {
      "id": "chg_01a1a98e-fc64-7471-9749-21d0df950ebd",
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      "occurred_on": "2026-11-05",
      "occurred_at": "2026-11-05 02:34:42.594527+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc64-7471-9749-21d0df950ebd"
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    {
      "id": "chg_01a1a98e-fc66-7398-aa6c-571166b5d521",
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      "occurred_at": "2026-11-05 02:34:42.594527+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc66-7398-aa6c-571166b5d521"
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    {
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      "occurred_at": "2026-11-05 02:34:42.594527+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc66-78cd-9efa-50a9d671a5be"
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    {
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      "occurred_at": "2026-11-05 02:34:42.594527+00",
      "observed_since": "2026-11-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc66-7da1-b996-a21fa4cd7ba3"
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    {
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      "occurred_at": "2026-11-05 02:34:42.594527+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/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a98e-fc68-7ddc-b424-2528e9d616be"
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    {
      "id": "chg_01a1a468-1f51-7097-a179-aa8831ef2673",
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        "tool": "deep_research"
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      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f51-7097-a179-aa8831ef2673"
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    {
      "id": "chg_01a1a468-1f4e-777c-9b2b-0efebd72db74",
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      "from_code": "auth.rfc9728_invoke",
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        "tool": "forget"
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      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
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      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f4e-777c-9b2b-0efebd72db74"
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    {
      "id": "chg_01a1a468-1f4f-76bd-810c-f0746a55e617",
      "kind": "check.verdict",
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      "from_code": "stability.building_history",
      "to_code": "stability.churn",
      "from_value": "0.73",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "23",
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        "auth_transport": "1"
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      "source": "scan",
      "summary": "Stability (0.73 → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f4f-76bd-810c-f0746a55e617"
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    {
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      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f4f-7cec-990f-209e4e76cacc"
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    {
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      "materiality": "security",
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      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f50-73ce-a2c0-f8a7f7fa9e3f"
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    {
      "id": "chg_01a1a468-1f50-7a3d-a58f-84ceea4e7224",
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      "materiality": "security",
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        "tool": "ask_pipeworx_grounded"
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      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f50-7a3d-a58f-84ceea4e7224"
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    {
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-11-04",
      "occurred_at": "2026-11-04 02:34:09.588849+00",
      "observed_since": "2026-11-03",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1a468-1f51-7bc6-8692-15c50b69cac2"
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    {
      "id": "chg_01a19f40-6c45-70b8-bdf8-bb6e507f023d",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
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      "occurred_on": "2026-11-03",
      "occurred_at": "2026-11-03 02:32:41.673328+00",
      "observed_since": "2026-11-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19f40-6c45-70b8-bdf8-bb6e507f023d"
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    {
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      "subject_kind": "server",
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      "materiality": "security",
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      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-11-03",
      "occurred_at": "2026-11-03 02:32:41.673328+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/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19f40-6c45-7b38-897d-34b369bf8237"
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    {
      "id": "chg_01a19f40-6c43-7b81-aeeb-291cce22c076",
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      "subject_kind": "tool",
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "ask_pipeworx"
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      "occurred_on": "2026-11-03",
      "occurred_at": "2026-11-03 02:32:41.673328+00",
      "observed_since": "2026-11-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19f40-6c43-7b81-aeeb-291cce22c076"
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    {
      "id": "chg_01a19f40-6c44-7b5a-9321-73545ad0a4c8",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "detail": {
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      "occurred_on": "2026-11-03",
      "occurred_at": "2026-11-03 02:32:41.673328+00",
      "observed_since": "2026-11-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19f40-6c44-7b5a-9321-73545ad0a4c8"
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    {
      "id": "chg_01a19f40-6c45-7601-ada7-adcc40763dc0",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "detail": {
        "tool": "deep_research"
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      "occurred_on": "2026-11-03",
      "occurred_at": "2026-11-03 02:32:41.673328+00",
      "observed_since": "2026-11-02",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19f40-6c45-7601-ada7-adcc40763dc0"
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    {
      "id": "chg_01a19a1a-4025-7252-9f34-e0cc548b86a9",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "detail": {
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      "occurred_on": "2026-11-02",
      "occurred_at": "2026-11-02 02:32:54.019421+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4025-7252-9f34-e0cc548b86a9"
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    {
      "id": "chg_01a19a1a-4021-7b9a-9c05-c3502bdabf1b",
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      "family": "auth-oauth",
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      "from_code": "auth.none_destructive",
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      "materiality": "security",
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      "occurred_on": "2026-11-02",
      "occurred_at": "2026-11-02 02:32:54.019421+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4021-7b9a-9c05-c3502bdabf1b"
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    {
      "id": "chg_01a19a1a-4024-7053-9163-6ff87aac4455",
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      "subject_kind": "tool",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
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      "occurred_on": "2026-11-02",
      "occurred_at": "2026-11-02 02:32:54.019421+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4024-7053-9163-6ff87aac4455"
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    {
      "id": "chg_01a19a1a-4024-7650-9e9a-948f19048193",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
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      "materiality": "security",
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      "detail": {
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      "occurred_on": "2026-11-02",
      "occurred_at": "2026-11-02 02:32:54.019421+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4024-7650-9e9a-948f19048193"
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    {
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      "subject": "ask_pipeworx_grounded",
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      "materiality": "security",
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      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-11-02",
      "occurred_at": "2026-11-02 02:32:54.019421+00",
      "observed_since": "2026-11-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4024-7bef-a01e-c26c9b4b267a"
    },
    {
      "id": "chg_01a19a1a-4025-77ba-a56f-181ac68fa815",
      "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 02:32:54.019421+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/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a19a1a-4025-77ba-a56f-181ac68fa815"
    },
    {
      "id": "chg_01a194f3-6d79-711e-986b-6ddf9b60531e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d79-711e-986b-6ddf9b60531e"
    },
    {
      "id": "chg_01a194f3-6d76-7a4e-9ee9-00175bb3e331",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_destructive",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d76-7a4e-9ee9-00175bb3e331"
    },
    {
      "id": "chg_01a194f3-6d78-7187-a2c4-3a655f3b39bd",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.churn",
      "from_value": "0.63",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "20",
        "added": "4",
        "breaks": "0",
        "removed": "0",
        "auth_transport": "1"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Stability (0.63 → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d78-7187-a2c4-3a655f3b39bd"
    },
    {
      "id": "chg_01a194f3-6d78-7936-aaed-4debb6c3e68f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d78-7936-aaed-4debb6c3e68f"
    },
    {
      "id": "chg_01a194f3-6d79-77f6-8095-d982c859a397",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d79-77f6-8095-d982c859a397"
    },
    {
      "id": "chg_01a194f3-6d79-7e8d-bcf9-731a567fd760",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d79-7e8d-bcf9-731a567fd760"
    },
    {
      "id": "chg_01a194f3-6d7a-7686-a200-67dc1406e960",
      "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": "2026-11-01",
      "occurred_at": "2026-11-01 02:32:23.639307+00",
      "observed_since": "2026-10-31",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a194f3-6d7a-7686-a200-67dc1406e960"
    },
    {
      "id": "chg_01a18fcd-0349-7816-8bcd-a46f311d857f",
      "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 02:32:19.942513+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/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18fcd-0349-7816-8bcd-a46f311d857f"
    },
    {
      "id": "chg_01a18fcd-0348-764b-9a04-e7b056cf3d36",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 02:32:19.942513+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18fcd-0348-764b-9a04-e7b056cf3d36"
    },
    {
      "id": "chg_01a18fcd-0348-7c7f-a935-de30d24e7218",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 02:32:19.942513+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18fcd-0348-7c7f-a935-de30d24e7218"
    },
    {
      "id": "chg_01a18fcd-0347-7884-a348-d8cccad433fc",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 02:32:19.942513+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18fcd-0347-7884-a348-d8cccad433fc"
    },
    {
      "id": "chg_01a18fcd-0349-727c-96e2-63d3096fe3ba",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-31",
      "occurred_at": "2026-10-31 02:32:19.942513+00",
      "observed_since": "2026-10-30",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18fcd-0349-727c-96e2-63d3096fe3ba"
    },
    {
      "id": "chg_01a18aa5-9b8f-7e37-991d-47c61dbb5930",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "compare_entities",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "compare_entities"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 02:31:11.389658+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “compare_entities” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b8f-7e37-991d-47c61dbb5930"
    },
    {
      "id": "chg_01a18aa5-9b90-7a3f-af9f-33b2297b76b3",
      "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 02:31:11.389658+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/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b90-7a3f-af9f-33b2297b76b3"
    },
    {
      "id": "chg_01a18aa5-9b8d-7b23-b42a-050e4700ec3c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 02:31:11.389658+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b8d-7b23-b42a-050e4700ec3c"
    },
    {
      "id": "chg_01a18aa5-9b8f-711c-959a-4b2e7fb23dfa",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 02:31:11.389658+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b8f-711c-959a-4b2e7fb23dfa"
    },
    {
      "id": "chg_01a18aa5-9b8f-7870-a61b-cca47aa7d02b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 02:31:11.389658+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b8f-7870-a61b-cca47aa7d02b"
    },
    {
      "id": "chg_01a18aa5-9b90-73e5-a618-fcf177a46856",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-30",
      "occurred_at": "2026-10-30 02:31:11.389658+00",
      "observed_since": "2026-10-29",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18aa5-9b90-73e5-a618-fcf177a46856"
    },
    {
      "id": "chg_01a1869c-7be4-7db7-afda-9bd38dbb309d",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_destructive",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 07:42:44.67635+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1869c-7be4-7db7-afda-9bd38dbb309d"
    },
    {
      "id": "chg_01a1857f-6d62-77c4-bc1a-c0832fa9480e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d62-77c4-bc1a-c0832fa9480e"
    },
    {
      "id": "chg_01a1857f-6d63-7938-9a25-11d36a52fe2b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d63-7938-9a25-11d36a52fe2b"
    },
    {
      "id": "chg_01a1857f-6d63-7f33-a883-f261c8c93c6c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d63-7f33-a883-f261c8c93c6c"
    },
    {
      "id": "chg_01a1857f-6d64-74d9-ab55-07ee5ff847f7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "bet_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "bet_research"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “bet_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d64-74d9-ab55-07ee5ff847f7"
    },
    {
      "id": "chg_01a1857f-6d65-7139-a5c0-c722cfc43cd2",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d65-7139-a5c0-c722cfc43cd2"
    },
    {
      "id": "chg_01a1857f-6d65-7832-8ea3-dbdf210a2135",
      "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": "2026-10-29",
      "occurred_at": "2026-10-29 02:31:23.177426+00",
      "observed_since": "2026-10-28",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a1857f-6d65-7832-8ea3-dbdf210a2135"
    },
    {
      "id": "chg_01a18056-abc6-790a-b721-af43a46fa3c9",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_destructive",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc6-790a-b721-af43a46fa3c9"
    },
    {
      "id": "chg_01a18056-abc7-780d-8068-93f72d70fcc5",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.churn",
      "from_value": "0.50",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "16",
        "added": "4",
        "breaks": "0",
        "removed": "0",
        "auth_transport": "1"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Stability (0.50 → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc7-780d-8068-93f72d70fcc5"
    },
    {
      "id": "chg_01a18056-abc7-7ceb-be4e-1e38e62be17c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc7-7ceb-be4e-1e38e62be17c"
    },
    {
      "id": "chg_01a18056-abc8-721d-a5bd-5fda86631784",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc8-721d-a5bd-5fda86631784"
    },
    {
      "id": "chg_01a18056-abc8-76ae-8d66-631ad1e0d0f5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc8-76ae-8d66-631ad1e0d0f5"
    },
    {
      "id": "chg_01a18056-abc8-7c65-854b-980f1e684eaf",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc8-7c65-854b-980f1e684eaf"
    },
    {
      "id": "chg_01a18056-abc9-77ed-b29e-92fd15bbe69b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_kalshi_spread",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "polymarket_kalshi_spread"
      },
      "occurred_on": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abc9-77ed-b29e-92fd15bbe69b"
    },
    {
      "id": "chg_01a18056-abca-7c6b-9861-ac809e767d9e",
      "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": "2026-10-28",
      "occurred_at": "2026-10-28 02:28:46.104112+00",
      "observed_since": "2026-10-27",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a18056-abca-7c6b-9861-ac809e767d9e"
    },
    {
      "id": "chg_01a17b31-8892-7675-bcb9-64edfc2d3a09",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 02:30:05.520095+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17b31-8892-7675-bcb9-64edfc2d3a09"
    },
    {
      "id": "chg_01a17b31-8887-73f8-9e2d-8116e14710d2",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 02:30:05.520095+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17b31-8887-73f8-9e2d-8116e14710d2"
    },
    {
      "id": "chg_01a17b31-8891-7363-8c10-8ae52e413345",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 02:30:05.520095+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17b31-8891-7363-8c10-8ae52e413345"
    },
    {
      "id": "chg_01a17b31-8892-7009-a6e7-8031d9cd0c27",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-27",
      "occurred_at": "2026-10-27 02:30:05.520095+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17b31-8892-7009-a6e7-8031d9cd0c27"
    },
    {
      "id": "chg_01a17b31-8892-7de9-b8f7-aaddac32e676",
      "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": "2026-10-27",
      "occurred_at": "2026-10-27 02:30:05.520095+00",
      "observed_since": "2026-10-26",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17b31-8892-7de9-b8f7-aaddac32e676"
    },
    {
      "id": "chg_01a17609-b25d-7774-a3a9-b844004e91bc",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25d-7774-a3a9-b844004e91bc"
    },
    {
      "id": "chg_01a17609-b256-7c54-9f70-384631f6cdeb",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-25",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b256-7c54-9f70-384631f6cdeb"
    },
    {
      "id": "chg_01a17609-b257-7d42-b4d6-ec469cd4a144",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-25",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b257-7d42-b4d6-ec469cd4a144"
    },
    {
      "id": "chg_01a17609-b264-7424-a8bf-84486e045255",
      "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": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b264-7424-a8bf-84486e045255"
    },
    {
      "id": "chg_01a17609-b25a-7b0e-922b-9391f3c14340",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25a-7b0e-922b-9391f3c14340"
    },
    {
      "id": "chg_01a17609-b25b-7c47-a09c-06b646f5c89b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25b-7c47-a09c-06b646f5c89b"
    },
    {
      "id": "chg_01a17609-b25c-7642-8040-27693eca8b1e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25c-7642-8040-27693eca8b1e"
    },
    {
      "id": "chg_01a17609-b25c-7dfe-9305-752b00ce7029",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "company_facts",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "company_facts"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “company_facts” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25c-7dfe-9305-752b00ce7029"
    },
    {
      "id": "chg_01a17609-b25d-7bc9-b260-349b512a8849",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "entity_profile",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "entity_profile"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “entity_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25d-7bc9-b260-349b512a8849"
    },
    {
      "id": "chg_01a17609-b25e-7dd1-a584-e896b43e87b6",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_fill_risk",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "polymarket_fill_risk"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “polymarket_fill_risk” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25e-7dd1-a584-e896b43e87b6"
    },
    {
      "id": "chg_01a17609-b25f-7305-a902-c3ebdade2ff0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "resolution_audit",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "resolution_audit"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “resolution_audit” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b25f-7305-a902-c3ebdade2ff0"
    },
    {
      "id": "chg_01a17609-b260-7440-aaa0-629d893a5436",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "resolution_diff",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "resolution_diff"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “resolution_diff” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b260-7440-aaa0-629d893a5436"
    },
    {
      "id": "chg_01a17609-b261-7da8-8900-48f1b8b334cd",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "subscribe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "subscribe"
      },
      "occurred_on": "2026-10-26",
      "occurred_at": "2026-10-26 02:28:29.372601+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool “subscribe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a17609-b261-7da8-8900-48f1b8b334cd"
    },
    {
      "id": "chg_01a13311-d2c3-72f2-8bc9-aa781a5905f2",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_unlisted",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 02:22:48.430612+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a13311-d2c3-72f2-8bc9-aa781a5905f2"
    },
    {
      "id": "chg_01a13311-d2c4-73db-916b-2d9ce9bf7f97",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.83",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "tools_unlisted"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 02:22:48.430612+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Stability (0.83 → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a13311-d2c4-73db-916b-2d9ce9bf7f97"
    },
    {
      "id": "chg_01a13311-d2c4-7ddd-b37e-a964ccf9f07a",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 02:22:48.430612+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a13311-d2c4-7ddd-b37e-a964ccf9f07a"
    },
    {
      "id": "chg_01a12daa-dcf6-792e-aa6b-1b9a733029e6",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-dcf6-792e-aa6b-1b9a733029e6"
    },
    {
      "id": "chg_01a12daa-dcfa-712d-ac08-20d0fdb37870",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-dcfa-712d-ac08-20d0fdb37870"
    },
    {
      "id": "chg_01a12daa-dcfe-7c45-883e-d49875ec85b3",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
      "subject_child": "",
      "from_code": null,
      "to_code": "auth.registration_cimd",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "First check of Authorization (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-dcfe-7c45-883e-d49875ec85b3"
    },
    {
      "id": "chg_01a12daa-dd03-758d-b1a0-3999c4e8b9d1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-dd03-758d-b1a0-3999c4e8b9d1"
    },
    {
      "id": "chg_01a12daa-de2a-7f17-af32-7b739abc22fc",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-de2a-7f17-af32-7b739abc22fc"
    },
    {
      "id": "chg_01a12daa-de7e-7389-a4ba-65c4ae899534",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-de7e-7389-a4ba-65c4ae899534"
    },
    {
      "id": "chg_01a12daa-de80-7384-bac3-1db4a344c3a2",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-de80-7384-bac3-1db4a344c3a2"
    },
    {
      "id": "chg_01a12daa-dee5-7162-bcf2-7d0c40b284d5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "release_calendar_markets",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "release_calendar_markets"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “release_calendar_markets” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-dee5-7162-bcf2-7d0c40b284d5"
    },
    {
      "id": "chg_01a12daa-deef-76fb-8a3f-d0e7352c7de1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "subscribe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "subscribe"
      },
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Tool “subscribe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-deef-76fb-8a3f-d0e7352c7de1"
    },
    {
      "id": "chg_01a12daa-e013-77a3-ac18-2ed69b331e5e",
      "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": "2026-10-12",
      "occurred_at": "2026-10-12 01:12:14.447541+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a12daa-e013-77a3-ac18-2ed69b331e5e"
    },
    {
      "id": "chg_01a0d6cf-6e0c-7286-9e6e-7a8c1d410459",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.churn",
      "to_code": "stability.insufficient_history",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "tools_unlisted"
      },
      "occurred_on": "2026-09-25",
      "occurred_at": "2026-09-25 04:25:13.362937+00",
      "observed_since": "2026-09-24",
      "source": "scan",
      "summary": "Stability (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-seoul-data/seoul-data-mcp#chg-chg_01a0d6cf-6e0c-7286-9e6e-7a8c1d410459"
    }
  ],
  "days": [
    {
      "date": "2026-11-06",
      "total": 70,
      "delta": -14,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-11-05",
      "total": 84,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-11-04",
      "total": 69,
      "delta": -14,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-11-03",
      "total": 83,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-11-02",
      "total": 83,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-11-01",
      "total": 68,
      "delta": -14,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-10-31",
      "total": 82,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-10-30",
      "total": 81,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    }
  ]
}