{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "pipeworx-io-pcaob",
  "component": "pcaob-mcp",
  "generated_at": "2026-09-21T13:10:11.075Z",
  "tracking_since": "2026-09-15",
  "counts": {
    "critical": 2,
    "security": 13,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0bc22-5cd6-7932-9f8b-b0460309ce3e",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_destructive",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 00:06:03.663486+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0bc22-5cd6-7932-9f8b-b0460309ce3e"
    },
    {
      "id": "chg_01a0b6fb-6577-7504-9e5a-577f023ffdc5",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_destructive",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0b6fb-6577-7504-9e5a-577f023ffdc5"
    },
    {
      "id": "chg_01a0b6fb-657b-739f-a565-25e2eb232816",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+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-pcaob/pcaob-mcp#chg-chg_01a0b6fb-657b-739f-a565-25e2eb232816"
    },
    {
      "id": "chg_01a0b6fb-657e-70e9-bf42-67bf9b28a86a",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+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-pcaob/pcaob-mcp#chg-chg_01a0b6fb-657e-70e9-bf42-67bf9b28a86a"
    },
    {
      "id": "chg_01a0b6fb-657e-7720-95f8-e1b9fb1a95e2",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+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-pcaob/pcaob-mcp#chg-chg_01a0b6fb-657e-7720-95f8-e1b9fb1a95e2"
    },
    {
      "id": "chg_01a0b6fb-657f-7a0e-b374-6c73ea35deed",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+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-pcaob/pcaob-mcp#chg-chg_01a0b6fb-657f-7a0e-b374-6c73ea35deed"
    },
    {
      "id": "chg_01a0b6fb-6585-79dc-920f-238bd4260a6b",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 00:05:23.854097+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-pcaob/pcaob-mcp#chg-chg_01a0b6fb-6585-79dc-920f-238bd4260a6b"
    },
    {
      "id": "chg_01a0b1d4-8253-7311-9832-e26b9d0e8584",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:04:49.277086+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0b1d4-8253-7311-9832-e26b9d0e8584"
    },
    {
      "id": "chg_01a0b1d4-8258-79f3-9e36-f16b93d7c11c",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:04:49.277086+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0b1d4-8258-79f3-9e36-f16b93d7c11c"
    },
    {
      "id": "chg_01a0b1d4-8259-760b-8e9e-2a0b75d2dbf4",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
      "subject_child": "",
      "from_code": null,
      "to_code": "auth.registration_cimd",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 00:04:49.277086+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "First check of Authorization (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0b1d4-8259-760b-8e9e-2a0b75d2dbf4"
    },
    {
      "id": "chg_01a0acae-1068-7928-8e9d-f5e950a1e33f",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_destructive",
      "to_code": "auth.none_unlisted",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:04:43.59156+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0acae-1068-7928-8e9d-f5e950a1e33f"
    },
    {
      "id": "chg_01a0acae-106b-7bf1-a803-b609c8d89d5c",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 00:04:43.59156+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0acae-106b-7bf1-a803-b609c8d89d5c"
    },
    {
      "id": "chg_01a0a786-bd75-70b0-92a6-33409f6e5c46",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.none_destructive",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:03:40.443461+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0a786-bd75-70b0-92a6-33409f6e5c46"
    },
    {
      "id": "chg_01a0a786-bd75-76f4-b9f5-cc9685eed00e",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:03:40.443461+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0a786-bd75-76f4-b9f5-cc9685eed00e"
    },
    {
      "id": "chg_01a0a786-bd75-7b29-80d3-bc7b3edbd002",
      "kind": "check.appeared",
      "family": "tool-safety-manipulation",
      "subject_kind": "check",
      "subject": "tool-safety-manipulation",
      "subject_child": "",
      "from_code": null,
      "to_code": "toolsafety.manipulation_clean",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "units": "42",
        "judged": "42"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:03:40.443461+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-pcaob/pcaob-mcp#chg-chg_01a0a786-bd75-7b29-80d3-bc7b3edbd002"
    }
  ],
  "days": [
    {
      "date": "2026-09-20",
      "total": 76,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-19",
      "total": 61,
      "delta": -14,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-09-18",
      "total": 75,
      "delta": 34,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-09-17",
      "total": 41,
      "delta": -18,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-09-16",
      "total": 59,
      "delta": 19,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 13
    },
    {
      "date": "2026-09-15",
      "total": 40,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}