{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "yusong652-pfc",
  "component": "pfc-mcp",
  "generated_at": "2026-09-20T18:45:12.470Z",
  "tracking_since": "2026-07-27",
  "counts": {
    "critical": 0,
    "security": 23,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a07fe8-1299-71d2-9e05-ac31861df57c",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "vendor_no_verdict"
      },
      "occurred_on": "2026-09-08",
      "occurred_at": "2026-09-08 07:25:10.475911+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a07fe8-1299-71d2-9e05-ac31861df57c"
    },
    {
      "id": "chg_01a06b23-a7b7-76f4-9600-426c9a06dda1",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 06:38:13.810076+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a06b23-a7b7-76f4-9600-426c9a06dda1"
    },
    {
      "id": "chg_01a0610e-4b41-7919-a315-a38f02d75ce6",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "vendor_no_verdict"
      },
      "occurred_on": "2026-09-02",
      "occurred_at": "2026-09-02 07:38:41.643993+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a0610e-4b41-7919-a315-a38f02d75ce6"
    },
    {
      "id": "chg_01a05c44-e553-7efa-be9f-f3c0eb0e99da",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.sandbox_failed",
      "from_value": "0.87",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "startup_failure",
        "status": "unreachable"
      },
      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 09:20:14.127812+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Stability (0.87 → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a05c44-e553-7efa-be9f-f3c0eb0e99da"
    },
    {
      "id": "chg_01a05c44-e554-7e9c-8158-47df9131a7ec",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.sandbox_failed",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "startup_failure",
        "status": "unreachable"
      },
      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 09:20:14.127812+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a05c44-e554-7e9c-8158-47df9131a7ec"
    },
    {
      "id": "chg_01a05ba3-2ae7-719e-b312-0f6c46bb043a",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-01",
      "occurred_at": "2026-09-01 06:23:35.11468+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a05ba3-2ae7-719e-b312-0f6c46bb043a"
    },
    {
      "id": "chg_01a056bd-f034-7b02-9f75-f8850a853200",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "vendor_no_verdict"
      },
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 07:34:43.294815+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a056bd-f034-7b02-9f75-f8850a853200"
    },
    {
      "id": "chg_01a037a4-3ff4-781b-860e-eddf09a3f876",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-25",
      "occurred_at": "2026-08-25 06:38:26.180869+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a037a4-3ff4-781b-860e-eddf09a3f876"
    },
    {
      "id": "chg_01a032a4-da34-7a25-8a6a-914b276875d9",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "reason": "vendor_no_verdict"
      },
      "occurred_on": "2026-08-24",
      "occurred_at": "2026-08-24 07:20:59.44286+00",
      "observed_since": "2026-08-23",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_01a032a4-da34-7a25-8a6a-914b276875d9"
    },
    {
      "id": "chg_019fdf9a-f29a-797d-8019-6765bd95a304",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 04:21:41.599523+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fdf9a-f29a-797d-8019-6765bd95a304"
    },
    {
      "id": "chg_019fd54e-8930-79e4-b179-b71b43d62050",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-06",
      "occurred_at": "2026-08-06 04:22:01.515827+00",
      "observed_since": "2026-08-05",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fd54e-8930-79e4-b179-b71b43d62050"
    },
    {
      "id": "chg_019fd23a-1181-7c8b-aa51-780e8c6eea51",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-05",
      "occurred_at": "2026-08-05 14:00:48.747788+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fd23a-1181-7c8b-aa51-780e8c6eea51"
    },
    {
      "id": "chg_019fd23a-1184-748b-aaed-8e4940569be2",
      "kind": "check.reason",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.sandbox_failed",
      "to_code": "stability.insufficient_history",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-05",
      "occurred_at": "2026-08-05 14:00:48.747788+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Stability (Stability not yet verified: not enough scan history yet (needs a 30-day window).)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fd23a-1184-748b-aaed-8e4940569be2"
    },
    {
      "id": "chg_019fcb0e-eb60-78eb-aaba-ea15fe471ebe",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 04:36:20.42936+00",
      "observed_since": "2026-08-03",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fcb0e-eb60-78eb-aaba-ea15fe471ebe"
    },
    {
      "id": "chg_019fc5d6-8034-761d-b2a7-9e5cb88b13f3",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 04:16:36.823921+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fc5d6-8034-761d-b2a7-9e5cb88b13f3"
    },
    {
      "id": "chg_019fc279-e3fd-76c6-add9-96c65bbb5b9e",
      "kind": "check.unverifiable",
      "family": "install-scripts",
      "subject_kind": "check",
      "subject": "install-scripts",
      "subject_child": "",
      "from_code": "installscript.allowlisted",
      "to_code": "installscript.inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 12:36:35.95133+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Install scripts (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fc279-e3fd-76c6-add9-96c65bbb5b9e"
    },
    {
      "id": "chg_019fc279-e3fe-76d7-b981-6cd43f10ec83",
      "kind": "check.reverified",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_inconclusive",
      "to_code": "supplychain.malware_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 12:36:35.95133+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Malware scan (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fc279-e3fe-76d7-b981-6cd43f10ec83"
    },
    {
      "id": "chg_019fc279-e3fe-7bc6-911a-a9c2f8bade36",
      "kind": "installscript.hooks_changed",
      "family": "install-scripts",
      "subject_kind": "package",
      "subject": "hooks",
      "subject_child": "",
      "from_code": "installscript.allowlisted",
      "to_code": "installscript.inconclusive",
      "from_value": "build_backend",
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "to": "",
        "from": "build_backend"
      },
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 12:36:35.95133+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "The scripts that run when this package is installed changed (build_backend)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fc279-e3fe-7bc6-911a-a9c2f8bade36"
    },
    {
      "id": "chg_019fb4a8-e265-785c-8d40-c00f8d3fdbf9",
      "kind": "check.unverifiable",
      "family": "supplychain-malware",
      "subject_kind": "check",
      "subject": "supplychain-malware",
      "subject_child": "",
      "from_code": "supplychain.malware_clean",
      "to_code": "supplychain.malware_inconclusive",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-07-30",
      "occurred_at": "2026-07-30 20:13:14.714903+00",
      "observed_since": "2026-07-29",
      "source": "scan",
      "summary": "Malware scan (pass → unverified)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fb4a8-e265-785c-8d40-c00f8d3fdbf9"
    },
    {
      "id": "chg_019fa945-1670-7830-bacb-dd5d0c745e57",
      "kind": "check.reverified",
      "family": "build-provenance",
      "subject_kind": "check",
      "subject": "build-provenance",
      "subject_child": "",
      "from_code": "provenance.inconclusive",
      "to_code": "provenance.none",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:08:25.062398+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Provenance (unverified → fail)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fa945-1670-7830-bacb-dd5d0c745e57"
    },
    {
      "id": "chg_019fa945-1670-7e72-94cc-8f6e948796ad",
      "kind": "check.reverified",
      "family": "vulnerabilities",
      "subject_kind": "check",
      "subject": "vulnerabilities",
      "subject_child": "",
      "from_code": "cve.inconclusive",
      "to_code": "cve.none",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "seen": "15",
        "assessed": "16",
        "resolved": "15",
        "tree_source": "registry",
        "tree_status": "resolved"
      },
      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:08:25.062398+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Known CVEs (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fa945-1670-7e72-94cc-8f6e948796ad"
    },
    {
      "id": "chg_019fa945-1671-7536-aeb7-bfaa9b00f836",
      "kind": "check.reverified",
      "family": "install-scripts",
      "subject_kind": "check",
      "subject": "install-scripts",
      "subject_child": "",
      "from_code": "installscript.inconclusive",
      "to_code": "installscript.allowlisted",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "hook": "build_backend",
        "tier": "allowlisted",
        "tool": "hatchling.build",
        "hooks": "build_backend"
      },
      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:08:25.062398+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Install scripts (unverified → pass)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fa945-1671-7536-aeb7-bfaa9b00f836"
    },
    {
      "id": "chg_019fa945-1671-7a15-bb0f-2e767f811f58",
      "kind": "installscript.hooks_changed",
      "family": "install-scripts",
      "subject_kind": "package",
      "subject": "hooks",
      "subject_child": "",
      "from_code": "installscript.inconclusive",
      "to_code": "installscript.allowlisted",
      "from_value": null,
      "to_value": "build_backend",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "to": "build_backend",
        "from": ""
      },
      "occurred_on": "2026-07-28",
      "occurred_at": "2026-07-28 15:08:25.062398+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "The scripts that run when this package is installed changed (build_backend)",
      "link": "https://verifymcp.io/servers/yusong652-pfc/pfc-mcp#chg-chg_019fa945-1671-7a15-bb0f-2e767f811f58"
    }
  ],
  "days": [
    {
      "date": "2026-09-09",
      "total": 19,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-08",
      "total": 19,
      "delta": -15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-04",
      "total": 34,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-02",
      "total": 19,
      "delta": -15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-01",
      "total": 34,
      "delta": -24,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-08-31",
      "total": 58,
      "delta": -15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-29",
      "total": 73,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 77,
        "to": 80,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 23,
          "to_days": 24
        },
        "partial": false,
        "compared_to": "2026-08-28",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-08-27",
      "total": 72,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 70,
        "to": 73,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 21,
          "to_days": 22
        },
        "partial": false,
        "compared_to": "2026-08-26",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    }
  ]
}