{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "pipeworx-io-california-tax-appeals",
  "component": "california-tax-appeals-mcp",
  "generated_at": "2026-10-18T16:58:07.481Z",
  "tracking_since": "2026-10-10",
  "counts": {
    "critical": 5,
    "security": 56,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a14c60-dfce-708c-8e81-bf4ea3f40d7d",
      "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": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-17",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfce-708c-8e81-bf4ea3f40d7d"
    },
    {
      "id": "chg_01a14c60-dfce-7dcb-bfa9-77759db1483b",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-17",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfce-7dcb-bfa9-77759db1483b"
    },
    {
      "id": "chg_01a14c60-dfd0-7268-aa58-72351909eb7c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd0-7268-aa58-72351909eb7c"
    },
    {
      "id": "chg_01a14c60-dfd0-75fe-95c4-666fd27cc392",
      "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": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd0-75fe-95c4-666fd27cc392"
    },
    {
      "id": "chg_01a14c60-dfd1-7c7b-8ee9-c918a7617642",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd1-7c7b-8ee9-c918a7617642"
    },
    {
      "id": "chg_01a14c60-dfd2-71b1-a2b3-9f9ef02a0c1b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ca_ota_search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ca_ota_search"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ca_ota_search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd2-71b1-a2b3-9f9ef02a0c1b"
    },
    {
      "id": "chg_01a14c60-dfd3-72ad-afef-28b6c138617d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "company_facts",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "company_facts"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “company_facts” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd3-72ad-afef-28b6c138617d"
    },
    {
      "id": "chg_01a14c60-dfd5-7dd4-a830-28b970601fed",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd5-7dd4-a830-28b970601fed"
    },
    {
      "id": "chg_01a14c60-dfd6-74a2-b957-cb3535501a9f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "entity_profile",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "entity_profile"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “entity_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd6-74a2-b957-cb3535501a9f"
    },
    {
      "id": "chg_01a14c60-dfd6-7906-b3be-0c764c0185f6",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "subscribe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "subscribe"
      },
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “subscribe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd6-7906-b3be-0c764c0185f6"
    },
    {
      "id": "chg_01a14c60-dfd7-719a-bf2e-b5eaeb17d6cb",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-18",
      "occurred_at": "2026-10-18 00:19:39.559009+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14c60-dfd7-719a-bf2e-b5eaeb17d6cb"
    },
    {
      "id": "chg_01a1473a-3495-7568-be0d-3c1ab11dbc7a",
      "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": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-16",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3495-7568-be0d-3c1ab11dbc7a"
    },
    {
      "id": "chg_01a1473a-3496-7501-b032-c38fd278e5d6",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-16",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3496-7501-b032-c38fd278e5d6"
    },
    {
      "id": "chg_01a1473a-3497-7a67-b395-99c2c524f7c8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3497-7a67-b395-99c2c524f7c8"
    },
    {
      "id": "chg_01a1473a-3497-7e46-8a5a-add7a1aa9a27",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3497-7e46-8a5a-add7a1aa9a27"
    },
    {
      "id": "chg_01a1473a-3498-7346-9c86-44ef6f05644f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3498-7346-9c86-44ef6f05644f"
    },
    {
      "id": "chg_01a1473a-3498-7c88-b3ce-d08575e9f307",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ca_ota_search",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ca_ota_search"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ca_ota_search” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-3498-7c88-b3ce-d08575e9f307"
    },
    {
      "id": "chg_01a1473a-349a-710d-a98b-4fb345872476",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "company_facts",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "company_facts"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “company_facts” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-349a-710d-a98b-4fb345872476"
    },
    {
      "id": "chg_01a1473a-349a-7917-84a7-c2cccc19156b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-349a-7917-84a7-c2cccc19156b"
    },
    {
      "id": "chg_01a1473a-349a-7d23-80ef-882349dd9818",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "entity_profile",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "entity_profile"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “entity_profile” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-349a-7d23-80ef-882349dd9818"
    },
    {
      "id": "chg_01a1473a-349b-72fd-a745-cecc20ff496f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "subscribe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "subscribe"
      },
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “subscribe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-349b-72fd-a745-cecc20ff496f"
    },
    {
      "id": "chg_01a1473a-349b-7b05-bba3-382241bbe70e",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-17",
      "occurred_at": "2026-10-17 00:19:19.295031+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1473a-349b-7b05-bba3-382241bbe70e"
    },
    {
      "id": "chg_01a14320-8cf9-786c-a166-495baeb4c037",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.13",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "tools_unlisted"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 05:12:44.739838+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Stability (0.13 → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14320-8cf9-786c-a166-495baeb4c037"
    },
    {
      "id": "chg_01a14320-8d5c-78fc-902d-bfeece2a0f8a",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_unlisted",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 05:12:44.739838+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14320-8d5c-78fc-902d-bfeece2a0f8a"
    },
    {
      "id": "chg_01a14320-8dc4-7077-b16e-0491e1615be9",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 05:12:44.739838+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a14320-8dc4-7077-b16e-0491e1615be9"
    },
    {
      "id": "chg_01a1421b-46f9-74f8-9fc3-d8525b9084c8",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_destructive",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "critical",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "forget"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-46f9-74f8-9fc3-d8525b9084c8"
    },
    {
      "id": "chg_01a1421b-4709-74b8-96cd-3fba2dbb24e3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-4709-74b8-96cd-3fba2dbb24e3"
    },
    {
      "id": "chg_01a1421b-470e-71a2-8faf-1bb3a4c65edd",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-470e-71a2-8faf-1bb3a4c65edd"
    },
    {
      "id": "chg_01a1421b-4777-7dd4-b4c2-867f74445f95",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-4777-7dd4-b4c2-867f74445f95"
    },
    {
      "id": "chg_01a1421b-47d2-7ecb-8b2e-94f09f4befec",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-47d2-7ecb-8b2e-94f09f4befec"
    },
    {
      "id": "chg_01a1421b-4827-723e-b3e8-9cceb012a7f1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "subscribe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "subscribe"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “subscribe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-4827-723e-b3e8-9cceb012a7f1"
    },
    {
      "id": "chg_01a1421b-482d-7da5-9aa2-7eab6fa8265e",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 00:27:25.238366+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a1421b-482d-7da5-9aa2-7eab6fa8265e"
    },
    {
      "id": "chg_01a13cf0-97aa-7f0e-811c-19338a513423",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-14",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-97aa-7f0e-811c-19338a513423"
    },
    {
      "id": "chg_01a13cf0-9805-7b49-a784-ac2107809ed1",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-14",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9805-7b49-a784-ac2107809ed1"
    },
    {
      "id": "chg_01a13cf0-9806-77b1-ba42-6569bb8b0746",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
      "subject_child": "",
      "from_code": null,
      "to_code": "auth.registration_cimd",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-14",
      "source": "scan",
      "summary": "First check of Authorization (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9806-77b1-ba42-6569bb8b0746"
    },
    {
      "id": "chg_01a13cf0-9808-78a3-8b11-50733d005486",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9808-78a3-8b11-50733d005486"
    },
    {
      "id": "chg_01a13cf0-985b-752f-bb0f-b46db318ce3f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-985b-752f-bb0f-b46db318ce3f"
    },
    {
      "id": "chg_01a13cf0-9864-75f4-9e33-b9bef9457ef1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9864-75f4-9e33-b9bef9457ef1"
    },
    {
      "id": "chg_01a13cf0-9939-75bb-9b4f-e85844976dc8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9939-75bb-9b4f-e85844976dc8"
    },
    {
      "id": "chg_01a13cf0-9a61-7b8a-a121-d29f22050e6f",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-15",
      "occurred_at": "2026-10-15 00:22:41.032874+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13cf0-9a61-7b8a-a121-d29f22050e6f"
    },
    {
      "id": "chg_01a137f7-bda2-76ee-b964-d5800c011574",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.07",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "tools_unlisted"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 01:12:22.534279+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Stability (0.07 → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137f7-bda2-76ee-b964-d5800c011574"
    },
    {
      "id": "chg_01a137f7-bffd-7ec6-bee6-232291a73810",
      "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": "2026-10-14",
      "occurred_at": "2026-10-14 01:12:22.534279+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137f7-bffd-7ec6-bee6-232291a73810"
    },
    {
      "id": "chg_01a137f7-c0b3-76d5-b286-cacb638c5735",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 01:12:22.534279+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137f7-c0b3-76d5-b286-cacb638c5735"
    },
    {
      "id": "chg_01a137b8-3bc1-701f-ad59-7e3487a41833",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:03:01.550134+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137b8-3bc1-701f-ad59-7e3487a41833"
    },
    {
      "id": "chg_01a137b8-3bd4-7b72-9937-c6d634570eb0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:03:01.550134+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137b8-3bd4-7b72-9937-c6d634570eb0"
    },
    {
      "id": "chg_01a137b8-3bd5-7ad5-9441-ba260feed9e9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:03:01.550134+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137b8-3bd5-7ad5-9441-ba260feed9e9"
    },
    {
      "id": "chg_01a137b8-3c2a-7b22-ab24-9bc38ffaa75d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:03:01.550134+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137b8-3c2a-7b22-ab24-9bc38ffaa75d"
    },
    {
      "id": "chg_01a137b8-3c32-782e-8e64-40971b8a44c1",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-14",
      "occurred_at": "2026-10-14 00:03:01.550134+00",
      "observed_since": "2026-10-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a137b8-3c32-782e-8e64-40971b8a44c1"
    },
    {
      "id": "chg_01a13290-4782-790f-ba46-2fcc9cf40566",
      "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": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-4782-790f-ba46-2fcc9cf40566"
    },
    {
      "id": "chg_01a13290-4783-7716-a2bc-014f5d160094",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-12",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-4783-7716-a2bc-014f5d160094"
    },
    {
      "id": "chg_01a13290-4788-7c9d-b99a-5352893101bc",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-4788-7c9d-b99a-5352893101bc"
    },
    {
      "id": "chg_01a13290-478b-7b7d-a746-d749d276e9d5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_beta",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_beta"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_beta” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-478b-7b7d-a746-d749d276e9d5"
    },
    {
      "id": "chg_01a13290-478d-71a5-a9ac-b8308faf8241",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_pipeworx_grounded",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_pipeworx_grounded"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool “ask_pipeworx_grounded” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-478d-71a5-a9ac-b8308faf8241"
    },
    {
      "id": "chg_01a13290-478e-756d-a6ac-d167e8a6ad73",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "company_facts",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "company_facts"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool “company_facts” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-478e-756d-a6ac-d167e8a6ad73"
    },
    {
      "id": "chg_01a13290-478e-7a67-9eb8-b7a19028c128",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "deep_research",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "deep_research"
      },
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool “deep_research” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-478e-7a67-9eb8-b7a19028c128"
    },
    {
      "id": "chg_01a13290-478f-7b55-90c7-b2b416e3a368",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-13",
      "occurred_at": "2026-10-13 00:01:18.686532+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a13290-478f-7b55-90c7-b2b416e3a368"
    },
    {
      "id": "chg_01a12e7a-a596-713e-ab0a-7eb7c324e605",
      "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": "2026-10-12",
      "occurred_at": "2026-10-12 04:59:10.056893+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a12e7a-a596-713e-ab0a-7eb7c324e605"
    },
    {
      "id": "chg_01a12e7a-a598-7c55-b9e7-7013885da9de",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-12",
      "occurred_at": "2026-10-12 04:59:10.056893+00",
      "observed_since": "2026-10-11",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a12e7a-a598-7c55-b9e7-7013885da9de"
    },
    {
      "id": "chg_01a12ced-0e6a-70d9-a9e4-445b66046d16",
      "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": "2026-10-11",
      "occurred_at": "2026-10-11 21:44:55.641335+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a12ced-0e6a-70d9-a9e4-445b66046d16"
    },
    {
      "id": "chg_01a12ced-0e6c-7817-beb4-97bf14e36b3e",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-11",
      "occurred_at": "2026-10-11 21:44:55.641335+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a12ced-0e6c-7817-beb4-97bf14e36b3e"
    },
    {
      "id": "chg_01a12ced-0e6c-7dda-9da8-7e6e66edd19b",
      "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": "43",
        "judged": "43"
      },
      "occurred_on": "2026-10-11",
      "occurred_at": "2026-10-11 21:44:55.641335+00",
      "observed_since": "2026-10-10",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-california-tax-appeals/california-tax-appeals-mcp#chg-chg_01a12ced-0e6c-7dda-9da8-7e6e66edd19b"
    }
  ],
  "days": [
    {
      "date": "2026-10-18",
      "total": 62,
      "delta": 32,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 19
    },
    {
      "date": "2026-10-17",
      "total": 30,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 20
    },
    {
      "date": "2026-10-16",
      "total": 30,
      "delta": -45,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 14
    },
    {
      "date": "2026-10-15",
      "total": 75,
      "delta": 45,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 17
    },
    {
      "date": "2026-10-14",
      "total": 30,
      "delta": -30,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 11
    },
    {
      "date": "2026-10-13",
      "total": 60,
      "delta": 30,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 13
    },
    {
      "date": "2026-10-12",
      "total": 30,
      "delta": -29,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-10-11",
      "total": 59,
      "delta": 29,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 12
    }
  ]
}