{
  "server": "pipeworx-io-library-of-congress",
  "component": "library-of-congress-mcp",
  "generated_at": "2026-08-03T21:11:51.122Z",
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  },
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      "occurred_at": "2026-08-03 01:10:33.244354+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc52c-2843-7cfe-b281-7fd46497c8f4"
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    {
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      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:10:33.244354+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc52c-2843-772d-a58b-6f509a148f08"
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    {
      "id": "chg_019fc52c-2842-7e16-a85e-18352246488e",
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      "detail": {
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      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:10:33.244354+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc52c-2842-7e16-a85e-18352246488e"
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    {
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      "detail": {
        "tool": "ask_pipeworx"
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      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:10:33.244354+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc52c-2841-7bcf-9dee-3faa9586730b"
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    {
      "id": "chg_019fc52c-2844-73a4-9396-045e4603c915",
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      "subject_kind": "server",
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      "detail": {},
      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:10:33.244354+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc52c-2844-73a4-9396-045e4603c915"
    },
    {
      "id": "chg_019fc007-d30d-7aaa-a479-c6ffdf51cd44",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "detail": {
        "tool": "ask_pipeworx"
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      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 01:12:46.073669+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc007-d30d-7aaa-a479-c6ffdf51cd44"
    },
    {
      "id": "chg_019fc007-d30e-7d5d-ae57-4ebbdb4b1690",
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      "family": "",
      "subject_kind": "server",
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      "materiality": "security",
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      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 01:12:46.073669+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc007-d30e-7d5d-ae57-4ebbdb4b1690"
    },
    {
      "id": "chg_019fc007-d30e-79c3-8ad1-3d668bdde89c",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 01:12:46.073669+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc007-d30e-79c3-8ad1-3d668bdde89c"
    },
    {
      "id": "chg_019fc007-d30e-74d6-a97f-95aca01a46c1",
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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": "2026-08-02",
      "occurred_at": "2026-08-02 01:12:46.073669+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc007-d30e-74d6-a97f-95aca01a46c1"
    },
    {
      "id": "chg_019fc007-d30e-70a8-9cf9-cca697d016d2",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 01:12:46.073669+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fc007-d30e-70a8-9cf9-cca697d016d2"
    },
    {
      "id": "chg_019fbadf-bdab-742c-8fba-a21b48579c64",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
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      "materiality": "security",
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      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
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      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:10:53.076318+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fbadf-bdab-742c-8fba-a21b48579c64"
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    {
      "id": "chg_019fbadf-bdac-72fc-9d24-b57e205d3342",
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      "family": "",
      "subject_kind": "server",
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      "from_code": null,
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      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:10:53.076318+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fbadf-bdac-72fc-9d24-b57e205d3342"
    },
    {
      "id": "chg_019fbadf-bdab-7d25-bf0e-14265f449eb3",
      "kind": "tool.description_changed",
      "family": "",
      "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": "deep_research"
      },
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:10:53.076318+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fbadf-bdab-7d25-bf0e-14265f449eb3"
    },
    {
      "id": "chg_019fbadf-bdaa-77ba-8479-a14cf9283a99",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
      "subject": "ask_pipeworx",
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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"
      },
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:10:53.076318+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fbadf-bdaa-77ba-8479-a14cf9283a99"
    },
    {
      "id": "chg_019fbadf-bdab-7908-b693-207c3b0f47dd",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
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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": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:10:53.076318+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fbadf-bdab-7908-b693-207c3b0f47dd"
    },
    {
      "id": "chg_019fb32a-2692-724a-b82b-05d1c9630090",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
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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": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2692-724a-b82b-05d1c9630090"
    },
    {
      "id": "chg_019fb32a-2690-7dde-8265-f6866eb0dc22",
      "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"
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      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2690-7dde-8265-f6866eb0dc22"
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    {
      "id": "chg_019fb32a-2691-765b-bb9f-85cd0ba1f273",
      "kind": "tool.description_changed",
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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"
      },
      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2691-765b-bb9f-85cd0ba1f273"
    },
    {
      "id": "chg_019fb32a-2691-7c8f-a355-4607e6b53de6",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
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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": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2691-7c8f-a355-4607e6b53de6"
    },
    {
      "id": "chg_019fb32a-2692-7884-b456-9506313dc92e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
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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": "deep_research"
      },
      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2692-7884-b456-9506313dc92e"
    },
    {
      "id": "chg_019fb32a-2692-7e45-a274-cef83ef88e14",
      "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": "2026-07-30",
      "occurred_at": "2026-07-30 13:15:11.875559+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fb32a-2692-7e45-a274-cef83ef88e14"
    },
    {
      "id": "chg_019fae2a-5fa9-73a2-bcba-5e3151584556",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5fa9-73a2-bcba-5e3151584556"
    },
    {
      "id": "chg_019fae2a-5fab-7a5c-b562-710673bbe0e2",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5fab-7a5c-b562-710673bbe0e2"
    },
    {
      "id": "chg_019fae2a-5fab-762d-b88d-2e317b21d9f3",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5fab-762d-b88d-2e317b21d9f3"
    },
    {
      "id": "chg_019fae2a-5fab-706c-aff3-8c0dc8074a65",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5fab-706c-aff3-8c0dc8074a65"
    },
    {
      "id": "chg_019fae2a-5faa-7b2e-b137-e96cb9c4fc80",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5faa-7b2e-b137-e96cb9c4fc80"
    },
    {
      "id": "chg_019fae2a-5faa-75ef-a634-424bb4967110",
      "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": "2026-07-29",
      "occurred_at": "2026-07-29 13:57:20.402144+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fae2a-5faa-75ef-a634-424bb4967110"
    },
    {
      "id": "chg_019fa956-bfb5-7054-9727-1ee238cb28a2",
      "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": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb5-7054-9727-1ee238cb28a2"
    },
    {
      "id": "chg_019fa956-bfb6-7948-a8a5-ac000a5fdca9",
      "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": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb6-7948-a8a5-ac000a5fdca9"
    },
    {
      "id": "chg_019fa956-bfb6-7233-8899-d3299d863b1d",
      "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": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb6-7233-8899-d3299d863b1d"
    },
    {
      "id": "chg_019fa956-bfb5-7c01-bad3-06cc2059d21f",
      "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": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb5-7c01-bad3-06cc2059d21f"
    },
    {
      "id": "chg_019fa956-bfb5-7592-b7c9-3e68c74a92ec",
      "kind": "tool.description_changed",
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      "subject_kind": "tool",
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      "subject_child": "",
      "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"
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      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb5-7592-b7c9-3e68c74a92ec"
    },
    {
      "id": "chg_019fa956-bfb4-77f6-b67b-1893f8141604",
      "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"
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      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:27:42.503382+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-library-of-congress/library-of-congress-mcp#chg-chg_019fa956-bfb4-77f6-b67b-1893f8141604"
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    {
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    {
      "date": "2026-08-01",
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      "attribution": null,
      "event_count": 5
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    {
      "date": "2026-07-31",
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      "delta": -2,
      "tracked": true,
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      "beyond_event_horizon": false,
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    {
      "date": "2026-07-30",
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    {
      "date": "2026-07-29",
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    {
      "date": "2026-07-28",
      "total": 59,
      "delta": 1,
      "tracked": true,
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      "attribution": null,
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    {
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}