{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "pipeworx-io-usgs-water",
  "component": "usgs-water-mcp",
  "generated_at": "2026-09-21T15:09:13.510Z",
  "tracking_since": "2026-07-26",
  "counts": {
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    "security": 98,
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    "cosmetic": 0
  },
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    {
      "id": "chg_01a0c147-8b90-72ba-9151-c3b4982cb3a3",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
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      "from_code": "auth.rfc9728_invoke",
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      "materiality": "critical",
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      "detail": {
        "tool": "forget"
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      "occurred_at": "2026-09-21 00:04:46.503203+00",
      "observed_since": "2026-09-20",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0c147-8b90-72ba-9151-c3b4982cb3a3"
    },
    {
      "id": "chg_01a0bc21-4aac-7db4-bf9f-a4b381d1f60d",
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      "from_code": "auth.none_destructive",
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      "from_value": "fail",
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 00:04:53.277721+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0bc21-4aac-7db4-bf9f-a4b381d1f60d"
    },
    {
      "id": "chg_01a0bc21-4aaf-7534-b96f-5e2cea4cd204",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
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      "from_code": null,
      "to_code": "auth.registration_cimd",
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      "to_value": "pass",
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      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 00:04:53.277721+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "First check of Authorization (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0bc21-4aaf-7534-b96f-5e2cea4cd204"
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    {
      "id": "chg_01a0b6fa-79c8-71e0-bf11-1cb7ea40b30e",
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      "detail": {
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      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 00:04:23.403666+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0b6fa-79c8-71e0-bf11-1cb7ea40b30e"
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    {
      "id": "chg_01a0b6fa-79cb-726c-9b8a-4783d602cae5",
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      "subject_kind": "tool",
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      "occurred_at": "2026-09-19 00:04:23.403666+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0b6fa-79cb-726c-9b8a-4783d602cae5"
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    {
      "id": "chg_01a0b6fa-79cf-71f1-b0db-e400ec0bb3f3",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "ask_pipeworx_grounded"
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      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 00:04:23.403666+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0b6fa-79cf-71f1-b0db-e400ec0bb3f3"
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    {
      "id": "chg_01a0b6fa-79d0-78fd-bad2-fb6179228332",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "deep_research"
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      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 00:04:23.403666+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0b6fa-79d0-78fd-bad2-fb6179228332"
    },
    {
      "id": "chg_01a0b6fa-79d1-7523-8c66-a2dcae59a0bd",
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      "family": "",
      "subject_kind": "server",
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      "from_code": null,
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      "materiality": "security",
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      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 00:04:23.403666+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0b6fa-79d1-7523-8c66-a2dcae59a0bd"
    },
    {
      "id": "chg_01a0b1d3-9493-7739-bb1f-991536cc28dd",
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      "subject_kind": "tool",
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      "from_code": null,
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      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
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      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:03:48.300793+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-usgs-water/usgs-water-mcp#chg-chg_01a0b1d3-9493-7739-bb1f-991536cc28dd"
    },
    {
      "id": "chg_01a0b1d3-9495-776f-9b19-4ab4ce70cba9",
      "kind": "tool.description_changed",
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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_beta"
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      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:03:48.300793+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-usgs-water/usgs-water-mcp#chg-chg_01a0b1d3-9495-776f-9b19-4ab4ce70cba9"
    },
    {
      "id": "chg_01a0b1d3-9497-79e6-8ff7-c1489d72d125",
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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_grounded"
      },
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:03:48.300793+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-usgs-water/usgs-water-mcp#chg-chg_01a0b1d3-9497-79e6-8ff7-c1489d72d125"
    },
    {
      "id": "chg_01a0b1d3-9498-7069-9c49-bc0502f45207",
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      "subject_kind": "tool",
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      "from_code": null,
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      "materiality": "security",
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      "detail": {
        "tool": "deep_research"
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      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:03:48.300793+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-usgs-water/usgs-water-mcp#chg-chg_01a0b1d3-9498-7069-9c49-bc0502f45207"
    },
    {
      "id": "chg_01a0b1d3-9498-7689-8e37-a76a315a24b7",
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      "family": "",
      "subject_kind": "server",
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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": {},
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:03:48.300793+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-usgs-water/usgs-water-mcp#chg-chg_01a0b1d3-9498-7689-8e37-a76a315a24b7"
    },
    {
      "id": "chg_01a0acad-276d-7bf8-8dbf-6669259c5d2d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
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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": "ask_pipeworx"
      },
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-276d-7bf8-8dbf-6669259c5d2d"
    },
    {
      "id": "chg_01a0acad-2770-77b2-97b5-54e0c8855cda",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
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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": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2770-77b2-97b5-54e0c8855cda"
    },
    {
      "id": "chg_01a0acad-2770-7dfb-8692-055c377a4ee5",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2770-7dfb-8692-055c377a4ee5"
    },
    {
      "id": "chg_01a0acad-2774-7dc9-b973-205a98996694",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2774-7dc9-b973-205a98996694"
    },
    {
      "id": "chg_01a0acad-2777-72d7-b8ee-5e282ec6a7e9",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “entity_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2777-72d7-b8ee-5e282ec6a7e9"
    },
    {
      "id": "chg_01a0acad-277a-7b0c-968d-9d8eea3022a9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_edge_tracker",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "polymarket_edge_tracker"
      },
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “polymarket_edge_tracker” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-277a-7b0c-968d-9d8eea3022a9"
    },
    {
      "id": "chg_01a0acad-277d-7399-a20b-dd0c5c9a728d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_edges",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "polymarket_edges"
      },
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “polymarket_edges” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-277d-7399-a20b-dd0c5c9a728d"
    },
    {
      "id": "chg_01a0acad-2782-7253-b5f8-3c574b0a1de1",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “polymarket_fill_risk” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2782-7253-b5f8-3c574b0a1de1"
    },
    {
      "id": "chg_01a0acad-2782-77d1-a9ac-feba774f848b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_kalshi_spread",
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      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2782-77d1-a9ac-feba774f848b"
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    {
      "id": "chg_01a0acad-2783-70e6-be37-5090e5010e91",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 00:03:43.962425+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0acad-2783-70e6-be37-5090e5010e91"
    },
    {
      "id": "chg_01a0a785-515b-76fb-b6c2-f442331439a6",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 00:02:07.124999+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a785-515b-76fb-b6c2-f442331439a6"
    },
    {
      "id": "chg_01a0a785-515f-74f3-ba07-5246470d2331",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 00:02:07.124999+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a785-515f-74f3-ba07-5246470d2331"
    },
    {
      "id": "chg_01a0a785-5160-71e2-ba86-4aaef435382b",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 00:02:07.124999+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a785-5160-71e2-ba86-4aaef435382b"
    },
    {
      "id": "chg_01a0a785-5164-7d77-946f-91a5490bc283",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 00:02:07.124999+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a785-5164-7d77-946f-91a5490bc283"
    },
    {
      "id": "chg_01a0a785-5165-7f03-aada-6ccf63cb48b3",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 00:02:07.124999+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a785-5165-7f03-aada-6ccf63cb48b3"
    },
    {
      "id": "chg_01a0a25d-7a7c-7b20-bd0c-ea42ccf0f0ee",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 00:00:29.907135+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a25d-7a7c-7b20-bd0c-ea42ccf0f0ee"
    },
    {
      "id": "chg_01a0a25d-7a7f-7523-9bae-bfbe5b82227c",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 00:00:29.907135+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a25d-7a7f-7523-9bae-bfbe5b82227c"
    },
    {
      "id": "chg_01a0a25d-7a81-7192-9b7b-4ab77385e446",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 00:00:29.907135+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a25d-7a81-7192-9b7b-4ab77385e446"
    },
    {
      "id": "chg_01a0a25d-7a83-7784-8124-b48af1ddc50e",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 00:00:29.907135+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a25d-7a83-7784-8124-b48af1ddc50e"
    },
    {
      "id": "chg_01a0a25d-7a86-7f40-a5dd-c936b580ad89",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 00:00:29.907135+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0a25d-7a86-7f40-a5dd-c936b580ad89"
    },
    {
      "id": "chg_01a09d3f-dab7-7ed7-ab98-32a414a31f79",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dab7-7ed7-ab98-32a414a31f79"
    },
    {
      "id": "chg_01a09d3f-daba-7d7a-a828-92cd80c76077",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-daba-7d7a-a828-92cd80c76077"
    },
    {
      "id": "chg_01a09d3f-dabb-7b1a-9c9d-1daf57357e79",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dabb-7b1a-9c9d-1daf57357e79"
    },
    {
      "id": "chg_01a09d3f-dabe-7b22-95d5-918c6dd91269",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dabe-7b22-95d5-918c6dd91269"
    },
    {
      "id": "chg_01a09d3f-dabf-7183-b268-85984e31ec6e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "polymarket_arbitrage",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "polymarket_arbitrage"
      },
      "occurred_on": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “polymarket_arbitrage” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dabf-7183-b268-85984e31ec6e"
    },
    {
      "id": "chg_01a09d3f-dac0-76a9-979f-c7dc57044a21",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dac0-76a9-979f-c7dc57044a21"
    },
    {
      "id": "chg_01a09d3f-dac2-7e36-9a77-3052bf2a5160",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 00:10:02.4109+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a09d3f-dac2-7e36-9a77-3052bf2a5160"
    },
    {
      "id": "chg_01a0981e-a13a-70f7-875f-f3ee90b11236",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 00:15:39.278853+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0981e-a13a-70f7-875f-f3ee90b11236"
    },
    {
      "id": "chg_01a0981e-a13b-7558-9caf-93ff12b38b17",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 00:15:39.278853+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0981e-a13b-7558-9caf-93ff12b38b17"
    },
    {
      "id": "chg_01a0981e-a13b-7bef-8037-aaf4c9293a4d",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 00:15:39.278853+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0981e-a13b-7bef-8037-aaf4c9293a4d"
    },
    {
      "id": "chg_01a0981e-a13c-7178-aae2-5212e60eb070",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 00:15:39.278853+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0981e-a13c-7178-aae2-5212e60eb070"
    },
    {
      "id": "chg_01a0981e-a13c-7733-a1cd-7f1431a1dd96",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 00:15:39.278853+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0981e-a13c-7733-a1cd-7f1431a1dd96"
    },
    {
      "id": "chg_01a092fa-aa51-7cce-a7a4-17cd2cb7eb9d",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa51-7cce-a7a4-17cd2cb7eb9d"
    },
    {
      "id": "chg_01a092fa-aa52-7e64-b616-6c19b07e62cc",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa52-7e64-b616-6c19b07e62cc"
    },
    {
      "id": "chg_01a092fa-aa53-7363-bdf3-0c275f0fabb6",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa53-7363-bdf3-0c275f0fabb6"
    },
    {
      "id": "chg_01a092fa-aa53-779f-98b1-7ae45c37f9c1",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “bet_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa53-779f-98b1-7ae45c37f9c1"
    },
    {
      "id": "chg_01a092fa-aa53-7f40-b589-125f5534f522",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa53-7f40-b589-125f5534f522"
    },
    {
      "id": "chg_01a092fa-aa54-7453-907d-d31756bbf215",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa54-7453-907d-d31756bbf215"
    },
    {
      "id": "chg_01a092fa-aa54-7cfe-b656-7be99e17c2bb",
      "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": "2026-09-12",
      "occurred_at": "2026-09-12 00:18:16.234739+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a092fa-aa54-7cfe-b656-7be99e17c2bb"
    },
    {
      "id": "chg_01a08dd5-a853-736a-91de-40418724768c",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:44.80421+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a08dd5-a853-736a-91de-40418724768c"
    },
    {
      "id": "chg_01a08dd5-a854-7540-8581-db15de10c17c",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:44.80421+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a08dd5-a854-7540-8581-db15de10c17c"
    },
    {
      "id": "chg_01a08dd5-a854-7b1e-b04c-93dc442ab167",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:44.80421+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a08dd5-a854-7b1e-b04c-93dc442ab167"
    },
    {
      "id": "chg_01a08dd5-a855-7187-8f2b-cfab415b4493",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:44.80421+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a08dd5-a855-7187-8f2b-cfab415b4493"
    },
    {
      "id": "chg_01a08dd5-a855-771a-b256-dfca9121f91d",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:44.80421+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a08dd5-a855-771a-b256-dfca9121f91d"
    },
    {
      "id": "chg_01a088a2-3087-7563-9d7c-223b77321a30",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 00:05:25.688479+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a088a2-3087-7563-9d7c-223b77321a30"
    },
    {
      "id": "chg_01a088a2-3089-7140-8d50-571190e5cc56",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 00:05:25.688479+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a088a2-3089-7140-8d50-571190e5cc56"
    },
    {
      "id": "chg_01a088a2-308a-7dbd-a9c5-e418063fb9f2",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 00:05:25.688479+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a088a2-308a-7dbd-a9c5-e418063fb9f2"
    },
    {
      "id": "chg_01a088a2-308d-7f00-946a-701d31c2caf2",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 00:05:25.688479+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a088a2-308d-7f00-946a-701d31c2caf2"
    },
    {
      "id": "chg_01a088a2-308e-7877-b8d5-73c667f138b9",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 00:05:25.688479+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a088a2-308e-7877-b8d5-73c667f138b9"
    },
    {
      "id": "chg_01a0837b-fe5d-76f1-b651-10e97640c56c",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_destructive_unverified",
      "to_code": "auth.none_destructive",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 00:05:36.354202+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0837b-fe5d-76f1-b651-10e97640c56c"
    },
    {
      "id": "chg_01a07e5e-0dfa-71c9-b4e1-4b0a12fff8fb",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_destructive",
      "to_code": "auth.none_destructive_unverified",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-09-08",
      "occurred_at": "2026-09-08 00:14:48.216316+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07e5e-0dfa-71c9-b4e1-4b0a12fff8fb"
    },
    {
      "id": "chg_01a07406-29f9-72ad-9443-edd3a8c2f979",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 00:02:36.071556+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07406-29f9-72ad-9443-edd3a8c2f979"
    },
    {
      "id": "chg_01a07406-29fb-7a82-ab58-7bda7185d253",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 00:02:36.071556+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07406-29fb-7a82-ab58-7bda7185d253"
    },
    {
      "id": "chg_01a07406-29fd-7176-be5c-e7641a49fa66",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 00:02:36.071556+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07406-29fd-7176-be5c-e7641a49fa66"
    },
    {
      "id": "chg_01a07406-29fd-7e20-8af7-9b3f190b2434",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 00:02:36.071556+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07406-29fd-7e20-8af7-9b3f190b2434"
    },
    {
      "id": "chg_01a07406-29fe-7976-a252-414a91acda0c",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 00:02:36.071556+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a07406-29fe-7976-a252-414a91acda0c"
    },
    {
      "id": "chg_01a06edf-b6f3-7cab-aaea-9fc1eb623dd1",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 00:02:30.203706+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06edf-b6f3-7cab-aaea-9fc1eb623dd1"
    },
    {
      "id": "chg_01a06edf-b6f5-7d77-8013-ebf95e76f662",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 00:02:30.203706+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06edf-b6f5-7d77-8013-ebf95e76f662"
    },
    {
      "id": "chg_01a06edf-b6f6-7333-80c3-ca2fac3690da",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 00:02:30.203706+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06edf-b6f6-7333-80c3-ca2fac3690da"
    },
    {
      "id": "chg_01a06edf-b6f7-7468-b4f7-e3021cf26078",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 00:02:30.203706+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06edf-b6f7-7468-b4f7-e3021cf26078"
    },
    {
      "id": "chg_01a06edf-b6f9-7736-a877-45f1ed110bc9",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 00:02:30.203706+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06edf-b6f9-7736-a877-45f1ed110bc9"
    },
    {
      "id": "chg_01a069b8-ca66-7ecb-b9c9-1524015cc372",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca66-7ecb-b9c9-1524015cc372"
    },
    {
      "id": "chg_01a069b8-ca69-7efe-bef5-2a3e5540aaff",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca69-7efe-bef5-2a3e5540aaff"
    },
    {
      "id": "chg_01a069b8-ca6c-7cb4-9b21-af0002a5b7d5",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca6c-7cb4-9b21-af0002a5b7d5"
    },
    {
      "id": "chg_01a069b8-ca6f-7a88-94fe-5eaea702715f",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca6f-7a88-94fe-5eaea702715f"
    },
    {
      "id": "chg_01a069b8-ca70-708a-a123-79d078ea2526",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “entity_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca70-708a-a123-79d078ea2526"
    },
    {
      "id": "chg_01a069b8-ca74-74a4-860d-a28bdae20916",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca74-74a4-860d-a28bdae20916"
    },
    {
      "id": "chg_01a069b8-ca75-728d-84a8-92a8934e8592",
      "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": "2026-09-04",
      "occurred_at": "2026-09-04 00:01:53.113536+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a069b8-ca75-728d-84a8-92a8934e8592"
    },
    {
      "id": "chg_01a06491-7bba-7584-a6de-4269e77df354",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 00:00:51.082932+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06491-7bba-7584-a6de-4269e77df354"
    },
    {
      "id": "chg_01a06491-7bbc-7909-8477-17b85bf184cc",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 00:00:51.082932+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06491-7bbc-7909-8477-17b85bf184cc"
    },
    {
      "id": "chg_01a06491-7bbd-7283-9c8b-385a9c6f0142",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 00:00:51.082932+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06491-7bbd-7283-9c8b-385a9c6f0142"
    },
    {
      "id": "chg_01a06491-7bbe-704a-a477-de8426807b6b",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 00:00:51.082932+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06491-7bbe-704a-a477-de8426807b6b"
    },
    {
      "id": "chg_01a06491-7bbf-7006-8ebc-a7a15704cf8d",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 00:00:51.082932+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a06491-7bbf-7006-8ebc-a7a15704cf8d"
    },
    {
      "id": "chg_01a05f6a-f00e-7ea0-842a-ad40e3a23eea",
      "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": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f00e-7ea0-842a-ad40e3a23eea"
    },
    {
      "id": "chg_01a05f6a-f012-729a-a590-87d842e6fa49",
      "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": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f012-729a-a590-87d842e6fa49"
    },
    {
      "id": "chg_01a05f6a-f012-789a-8a95-5aff6b333d90",
      "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": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f012-789a-8a95-5aff6b333d90"
    },
    {
      "id": "chg_01a05f6a-f013-7b83-a6bb-197085607fa5",
      "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": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f013-7b83-a6bb-197085607fa5"
    },
    {
      "id": "chg_01a05f6a-f016-753a-9d49-e5bc941e8861",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "resolve_entity",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "resolve_entity"
      },
      "occurred_on": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Tool “resolve_entity” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f016-753a-9d49-e5bc941e8861"
    },
    {
      "id": "chg_01a05f6a-f019-7262-8e7a-b2fbcbbd1cf9",
      "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": "2026-09-02",
      "occurred_at": "2026-09-02 00:00:38.759902+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05f6a-f019-7262-8e7a-b2fbcbbd1cf9"
    },
    {
      "id": "chg_01a05a44-8b9f-7c1a-8a84-9a12f963ae53",
      "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": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8b9f-7c1a-8a84-9a12f963ae53"
    },
    {
      "id": "chg_01a05a44-8ba2-7366-9dca-c010fe863ad2",
      "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": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8ba2-7366-9dca-c010fe863ad2"
    },
    {
      "id": "chg_01a05a44-8ba2-79ee-87d1-4fc09b35dcbd",
      "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": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8ba2-79ee-87d1-4fc09b35dcbd"
    },
    {
      "id": "chg_01a05a44-8ba3-7865-a0e8-37a4daaf858e",
      "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"
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      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8ba3-7865-a0e8-37a4daaf858e"
    },
    {
      "id": "chg_01a05a44-8ba3-7cff-885e-dc494db66921",
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      "family": "",
      "subject_kind": "tool",
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      "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"
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      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “polymarket_kalshi_spread” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8ba3-7cff-885e-dc494db66921"
    },
    {
      "id": "chg_01a05a44-8ba4-722f-9d18-68ec07fbaadc",
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      "family": "",
      "subject_kind": "server",
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      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 00:00:36.721238+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a05a44-8ba4-722f-9d18-68ec07fbaadc"
    },
    {
      "id": "chg_01a0551e-22dd-7ac1-95ac-c0f11a8a3aaa",
      "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"
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      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 00:00:33.432655+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0551e-22dd-7ac1-95ac-c0f11a8a3aaa"
    },
    {
      "id": "chg_01a0551e-22e8-78c3-9bcb-81b69ac718b0",
      "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": "2026-08-31",
      "occurred_at": "2026-08-31 00:00:33.432655+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-usgs-water/usgs-water-mcp#chg-chg_01a0551e-22e8-78c3-9bcb-81b69ac718b0"
    }
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      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
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      "date": "2026-09-19",
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      "beyond_event_horizon": false,
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      "tracked": true,
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      "beyond_event_horizon": false,
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      "date": "2026-09-16",
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}