{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "pipeworx-io-nansen",
  "component": "nansen-mcp",
  "generated_at": "2026-09-21T13:10:09.998Z",
  "tracking_since": "2026-09-15",
  "counts": {
    "critical": 2,
    "security": 13,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0c148-41a1-7bc5-be3e-d603ff3aeee6",
      "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": "2026-09-21",
      "occurred_at": "2026-09-21 00:05:33.167864+00",
      "observed_since": "2026-09-20",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0c148-41a1-7bc5-be3e-d603ff3aeee6"
    },
    {
      "id": "chg_01a0bc22-422c-7622-bccf-257024f6d6a9",
      "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": "2026-09-20",
      "occurred_at": "2026-09-20 00:05:56.850842+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Authorization (pass → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0bc22-422c-7622-bccf-257024f6d6a9"
    },
    {
      "id": "chg_01a0b6fb-53e5-73c2-ad8d-3a3a2b3e0544",
      "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 00:05:19.402538+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-nansen/nansen-mcp#chg-chg_01a0b6fb-53e5-73c2-ad8d-3a3a2b3e0544"
    },
    {
      "id": "chg_01a0b6fb-53e5-7ef9-83af-2e9702a3d1d2",
      "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 00:05:19.402538+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-nansen/nansen-mcp#chg-chg_01a0b6fb-53e5-7ef9-83af-2e9702a3d1d2"
    },
    {
      "id": "chg_01a0b6fb-53e7-79b8-be07-f966c7a4a60d",
      "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 00:05:19.402538+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-nansen/nansen-mcp#chg-chg_01a0b6fb-53e7-79b8-be07-f966c7a4a60d"
    },
    {
      "id": "chg_01a0b6fb-53e7-7e29-a4af-b6d17d6983f1",
      "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 00:05:19.402538+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-nansen/nansen-mcp#chg-chg_01a0b6fb-53e7-7e29-a4af-b6d17d6983f1"
    },
    {
      "id": "chg_01a0b6fb-53e8-73a7-9174-03ad6c4650b9",
      "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 00:05:19.402538+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-nansen/nansen-mcp#chg-chg_01a0b6fb-53e8-73a7-9174-03ad6c4650b9"
    },
    {
      "id": "chg_01a0b1d4-6d06-7409-ac02-bb106e820fb4",
      "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 00:04:43.819091+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0b1d4-6d06-7409-ac02-bb106e820fb4"
    },
    {
      "id": "chg_01a0b1d4-6d09-78ac-ba81-f11cdfb8551e",
      "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 00:04:43.819091+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0b1d4-6d09-78ac-ba81-f11cdfb8551e"
    },
    {
      "id": "chg_01a0b1d4-6d0c-7594-a423-36d4572c48b0",
      "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 00:04:43.819091+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "First check of Authorization (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0b1d4-6d0c-7594-a423-36d4572c48b0"
    },
    {
      "id": "chg_01a0acae-046d-72e7-ba88-3c1561360c9f",
      "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 00:04:40.641611+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Authorization (fail → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0acae-046d-72e7-ba88-3c1561360c9f"
    },
    {
      "id": "chg_01a0acae-046d-7e86-b8ae-969ac287ab9b",
      "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 00:04:40.641611+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0acae-046d-7e86-b8ae-969ac287ab9b"
    },
    {
      "id": "chg_01a0a786-a224-7949-bbd0-824c26cc6089",
      "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 00:03:33.440963+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0a786-a224-7949-bbd0-824c26cc6089"
    },
    {
      "id": "chg_01a0a786-a228-79f7-a1ab-bec670cc287a",
      "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 00:03:33.440963+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0a786-a228-79f7-a1ab-bec670cc287a"
    },
    {
      "id": "chg_01a0a786-a239-7211-a492-0fd972d7d7f3",
      "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": "40",
        "judged": "40"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:03:33.440963+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/pipeworx-io-nansen/nansen-mcp#chg-chg_01a0a786-a239-7211-a492-0fd972d7d7f3"
    }
  ],
  "days": [
    {
      "date": "2026-09-21",
      "total": 76,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-20",
      "total": 61,
      "delta": -14,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-19",
      "total": 75,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-09-18",
      "total": 74,
      "delta": 33,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-09-17",
      "total": 41,
      "delta": -17,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-09-16",
      "total": 58,
      "delta": 18,
      "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
    }
  ]
}