{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "vn-algolab-mcp",
  "component": "free",
  "generated_at": "2026-09-27T21:21:03.211Z",
  "tracking_since": "2026-09-25",
  "counts": {
    "critical": 0,
    "security": 6,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0e11e-23fa-72c4-920b-620a59e1590f",
      "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": "2026-09-27",
      "occurred_at": "2026-09-27 04:27:23.929554+00",
      "observed_since": "2026-09-26",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0e11e-23fa-72c4-920b-620a59e1590f"
    },
    {
      "id": "chg_01a0dbf5-987f-715e-acaf-657aad4770fd",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.unreachable",
      "to_code": "transport.verified",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-09-26",
      "occurred_at": "2026-09-26 04:25:00.71465+00",
      "observed_since": "2026-09-25",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0dbf5-987f-715e-acaf-657aad4770fd"
    },
    {
      "id": "chg_01a0dbf5-9882-705e-8912-695c777b031e",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.none_no_destructive",
      "from_value": "unverified",
      "to_value": "partial",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-26",
      "occurred_at": "2026-09-26 04:25:00.71465+00",
      "observed_since": "2026-09-25",
      "source": "scan",
      "summary": "Authorization (unverified → partial)",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0dbf5-9882-705e-8912-695c777b031e"
    },
    {
      "id": "chg_01a0dbf5-9882-774d-9bd7-c6f242617c3a",
      "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": "2026-09-26",
      "occurred_at": "2026-09-26 04:25:00.71465+00",
      "observed_since": "2026-09-25",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0dbf5-9882-774d-9bd7-c6f242617c3a"
    },
    {
      "id": "chg_01a0dbf5-9883-74b5-8889-a6fbb83a2a56",
      "kind": "check.reverified",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.inconclusive",
      "to_code": "headers.hsts_present",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-26",
      "occurred_at": "2026-09-26 04:25:00.71465+00",
      "observed_since": "2026-09-25",
      "source": "scan",
      "summary": "HSTS header (unverified → pass)",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0dbf5-9883-74b5-8889-a6fbb83a2a56"
    },
    {
      "id": "chg_01a0dbf5-9883-7c38-b344-cbef49abedfa",
      "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": "14",
        "judged": "14"
      },
      "occurred_on": "2026-09-26",
      "occurred_at": "2026-09-26 04:25:00.71465+00",
      "observed_since": "2026-09-25",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/vn-algolab-mcp/free#chg-chg_01a0dbf5-9883-7c38-b344-cbef49abedfa"
    }
  ],
  "days": [
    {
      "date": "2026-09-27",
      "total": 72,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-26",
      "total": 71,
      "delta": 48,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 13
    },
    {
      "date": "2026-09-25",
      "total": 23,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}