{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-headcountlabs-jobs",
  "component": "mcp-public",
  "generated_at": "2026-10-23T19:58:53.250Z",
  "tracking_since": "2026-10-15",
  "counts": {
    "critical": 0,
    "security": 12,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a15863-255a-73e1-97ce-3ca8bf0289f2",
      "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": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-255a-73e1-97ce-3ca8bf0289f2"
    },
    {
      "id": "chg_01a15863-255b-73c9-b687-68b08d61b442",
      "kind": "server.breaking_without_version_bump",
      "family": "",
      "subject_kind": "server",
      "subject": "1.0.0",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "1.0.0",
      "to_value": "1.0.0",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "removed": "1",
        "version": "1.0.0",
        "breaking": "0"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "A breaking change shipped without a version bump (still 1.0.0)",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-255b-73c9-b687-68b08d61b442"
    },
    {
      "id": "chg_01a15863-2551-7929-ad87-c4ea7cfb7efc",
      "kind": "check.verdict",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.hsts_absent",
      "to_code": "headers.hsts_present",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2551-7929-ad87-c4ea7cfb7efc"
    },
    {
      "id": "chg_01a15863-2553-7ef9-a1cf-187cf4bedc3b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "count_jobs",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "count_jobs"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “count_jobs” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2553-7ef9-a1cf-187cf4bedc3b"
    },
    {
      "id": "chg_01a15863-2554-77f1-937f-ecda18e4e40a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_job",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_job"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “get_job” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2554-77f1-937f-ecda18e4e40a"
    },
    {
      "id": "chg_01a15863-2555-70c1-b44e-ceac62614eb3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "list_fields",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "list_fields"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “list_fields” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2555-70c1-b44e-ceac62614eb3"
    },
    {
      "id": "chg_01a15863-2555-74ab-a131-35813d548953",
      "kind": "tool.removed",
      "family": "",
      "subject_kind": "tool",
      "subject": "market_insights",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "market_insights"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “market_insights” was removed",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2555-74ab-a131-35813d548953"
    },
    {
      "id": "chg_01a15863-2555-7917-b8bb-ee0dc6972592",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_docs",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_docs"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “search_docs” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2555-7917-b8bb-ee0dc6972592"
    },
    {
      "id": "chg_01a15863-2555-7d15-b12a-ccc06753daec",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_jobs",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_jobs"
      },
      "occurred_on": "2026-10-20",
      "occurred_at": "2026-10-20 08:17:35.039885+00",
      "observed_since": "2026-10-19",
      "source": "scan",
      "summary": "Tool “search_jobs” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15863-2555-7d15-b12a-ccc06753daec"
    },
    {
      "id": "chg_01a15175-606d-7e30-b1bb-bf329fe830ef",
      "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": "2026-10-19",
      "occurred_at": "2026-10-19 00:00:09.186579+00",
      "observed_since": "2026-10-18",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15175-606d-7e30-b1bb-bf329fe830ef"
    },
    {
      "id": "chg_01a15175-605e-7cd9-a73e-df38c5926d69",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_jobs",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_jobs"
      },
      "occurred_on": "2026-10-19",
      "occurred_at": "2026-10-19 00:00:09.186579+00",
      "observed_since": "2026-10-18",
      "source": "scan",
      "summary": "Tool “search_jobs” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-headcountlabs-jobs/mcp-public#chg-chg_01a15175-605e-7cd9-a73e-df38c5926d69"
    },
    {
      "id": "chg_01a143bf-7769-7176-bf5b-316679e7eca5",
      "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 08:06:21.03236+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/com-headcountlabs-jobs/mcp-public#chg-chg_01a143bf-7769-7176-bf5b-316679e7eca5"
    }
  ],
  "days": [
    {
      "date": "2026-10-22",
      "total": 76,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 20,
        "to": 23,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 6,
          "to_days": 7
        },
        "partial": false,
        "compared_to": "2026-10-21",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-20",
      "total": 75,
      "delta": 7,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 26
    },
    {
      "date": "2026-10-19",
      "total": 68,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-10-18",
      "total": 68,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 7,
        "to": 10,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 2,
          "to_days": 3
        },
        "partial": false,
        "compared_to": "2026-10-17",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-16",
      "total": 67,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-10-15",
      "total": 67,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}