{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "cyanheads-stackexchange-mcp-server",
  "component": "stackexchange",
  "generated_at": "2026-09-22T01:39:44.504Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 14,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0bb41-3baa-7bf3-a559-1442289cf020",
      "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 20:00:09.546132+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a0bb41-3baa-7bf3-a559-1442289cf020"
    },
    {
      "id": "chg_01a0897d-6362-78ba-a676-7bf135e0312a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "stackexchange_get_tag_faq",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "stackexchange_get_tag_faq"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 04:04:51.059669+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “stackexchange_get_tag_faq” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a0897d-6362-78ba-a676-7bf135e0312a"
    },
    {
      "id": "chg_01a08947-1ec7-7f36-b36b-49fbede425e4",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "stackexchange_get_user",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "stackexchange_get_user"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 03:05:34.490674+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “stackexchange_get_user” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a08947-1ec7-7f36-b36b-49fbede425e4"
    },
    {
      "id": "chg_01a08947-1eca-7630-b444-c6ecafd1a75d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "stackexchange_search_questions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "stackexchange_search_questions"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 03:05:34.490674+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “stackexchange_search_questions” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a08947-1eca-7630-b444-c6ecafd1a75d"
    },
    {
      "id": "chg_01a0848e-26f0-74b9-bf3a-5de58b18b739",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.stable",
      "from_value": "0.97",
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 05:05:03.605115+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a0848e-26f0-74b9-bf3a-5de58b18b739"
    },
    {
      "id": "chg_01a0374e-bf11-7f19-8393-3fdb9be6083e",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.stable",
      "from_value": "0.97",
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-25",
      "occurred_at": "2026-08-25 05:05:02.329856+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_01a0374e-bf11-7f19-8393-3fdb9be6083e"
    },
    {
      "id": "chg_019fea0f-e5ee-7b49-a5e5-71f792c45b4b",
      "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": "2026-08-10",
      "occurred_at": "2026-08-10 05:05:38.211947+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fea0f-e5ee-7b49-a5e5-71f792c45b4b"
    },
    {
      "id": "chg_019fea0f-e5ef-7806-aed4-2bc7ec7fef92",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.http_error",
      "to_code": "transport.verified",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 05:05:38.211947+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fea0f-e5ef-7806-aed4-2bc7ec7fef92"
    },
    {
      "id": "chg_019fea0f-e5ef-7c07-b400-028d5ea805f7",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.none_undeclared",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "auth": "none",
        "undeclared_tools": "5"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 05:05:38.211947+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 5 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fea0f-e5ef-7c07-b400-028d5ea805f7"
    },
    {
      "id": "chg_019fdfc2-f524-7d43-a54b-524d8078865b",
      "kind": "capture.status_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "capture",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "verified",
      "to_value": "not_mcp",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "to": "not_mcp",
        "from": "verified"
      },
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 05:05:23.637564+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fdfc2-f524-7d43-a54b-524d8078865b"
    },
    {
      "id": "chg_019fdfc2-f51e-78c5-b5fa-d738e066e5e0",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_undeclared",
      "to_code": "auth.none_unlisted",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 05:05:23.637564+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fdfc2-f51e-78c5-b5fa-d738e066e5e0"
    },
    {
      "id": "chg_019fdfc2-f51e-7014-8c54-84a96b10de17",
      "kind": "check.verdict",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.hsts_present",
      "to_code": "headers.hsts_absent",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 05:05:23.637564+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "HSTS header (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fdfc2-f51e-7014-8c54-84a96b10de17"
    },
    {
      "id": "chg_019fdfc2-f51d-7347-8551-f48afcf7c34b",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.40",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 05:05:23.637564+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Stability (0.40 → unverified)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fdfc2-f51d-7347-8551-f48afcf7c34b"
    },
    {
      "id": "chg_019fdfc2-f51c-7060-ae62-4a2dfe6943b0",
      "kind": "check.verdict",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.verified",
      "to_code": "transport.http_error",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "status": "530",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 05:05:23.637564+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-stackexchange-mcp-server/stackexchange#chg-chg_019fdfc2-f51c-7060-ae62-4a2dfe6943b0"
    }
  ],
  "days": [
    {
      "date": "2026-09-19",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-10",
      "total": 80,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 11
    },
    {
      "date": "2026-09-09",
      "total": 81,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-08",
      "total": 81,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 93,
        "to": 97,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 28,
          "to_days": 29
        },
        "partial": false,
        "compared_to": "2026-09-07",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-07",
      "total": 80,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-26",
      "total": 81,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-25",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-24",
      "total": 80,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 93,
        "to": 97,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 28,
          "to_days": 29
        },
        "partial": false,
        "compared_to": "2026-08-23",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    }
  ]
}