{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "cyanheads-treasury-fiscaldata-mcp-server",
  "component": "treasury-fiscaldata",
  "generated_at": "2026-09-21T02:31:00.040Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 15,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a08383-2227-7ecd-8d57-b0dd1225f450",
      "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 00:13:24.348471+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_01a08383-2227-7ecd-8d57-b0dd1225f450"
    },
    {
      "id": "chg_01a0363f-3bfb-7694-933a-75708040c8b4",
      "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 00:08:28.868749+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_01a0363f-3bfb-7694-933a-75708040c8b4"
    },
    {
      "id": "chg_019ffa2a-e21b-7a43-8cef-915e9c030fed",
      "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": "2026-08-13",
      "occurred_at": "2026-08-13 08:09:02.148931+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019ffa2a-e21b-7a43-8cef-915e9c030fed"
    },
    {
      "id": "chg_019ffa2a-e21a-7b29-8486-734939ccf4c9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "treasury_query_dataset",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "treasury_query_dataset"
      },
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 08:09:02.148931+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Tool “treasury_query_dataset” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019ffa2a-e21a-7b29-8486-734939ccf4c9"
    },
    {
      "id": "chg_019ffa2a-e219-7d51-877c-08fdb6bd2dd5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "treasury_get_interest_rates",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "treasury_get_interest_rates"
      },
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 08:09:02.148931+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Tool “treasury_get_interest_rates” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019ffa2a-e219-7d51-877c-08fdb6bd2dd5"
    },
    {
      "id": "chg_019ffa2a-e218-7a5d-8011-305cb9d9775e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "treasury_get_exchange_rates",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "treasury_get_exchange_rates"
      },
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 08:09:02.148931+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Tool “treasury_get_exchange_rates” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019ffa2a-e218-7a5d-8011-305cb9d9775e"
    },
    {
      "id": "chg_019ffa2a-e214-7481-aea2-04f476fc9264",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "treasury_get_debt",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "treasury_get_debt"
      },
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 08:09:02.148931+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Tool “treasury_get_debt” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019ffa2a-e214-7481-aea2-04f476fc9264"
    },
    {
      "id": "chg_019fe8fd-d168-79c1-890a-83dd7a123198",
      "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 00:06:16.116417+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fe8fd-d168-79c1-890a-83dd7a123198"
    },
    {
      "id": "chg_019fe8fd-d170-793c-ac91-7836036c24ff",
      "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 00:06:16.116417+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fe8fd-d170-793c-ac91-7836036c24ff"
    },
    {
      "id": "chg_019fe8fd-d174-714d-9d8b-eb803e69320f",
      "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": "7"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 00:06:16.116417+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 7 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-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fe8fd-d174-714d-9d8b-eb803e69320f"
    },
    {
      "id": "chg_019fdeb1-4df8-7004-ab36-3f5f78354c3a",
      "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 00:06:29.597094+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-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fdeb1-4df8-7004-ab36-3f5f78354c3a"
    },
    {
      "id": "chg_019fdeb1-4df6-762a-bd39-036aeced5f2e",
      "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 00:06:29.597094+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "HSTS header (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fdeb1-4df6-762a-bd39-036aeced5f2e"
    },
    {
      "id": "chg_019fdeb1-4dfb-7d84-b10e-67364d657557",
      "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 00:06:29.597094+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fdeb1-4dfb-7d84-b10e-67364d657557"
    },
    {
      "id": "chg_019fdeb1-4df3-7ce4-b8da-2599b53dade1",
      "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 00:06:29.597094+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fdeb1-4df3-7ce4-b8da-2599b53dade1"
    },
    {
      "id": "chg_019fdeb1-4df5-7abc-b5ec-e418a8a47fde",
      "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 00:06:29.597094+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Stability (0.40 → unverified)",
      "link": "https://verifymcp.io/servers/cyanheads-treasury-fiscaldata-mcp-server/treasury-fiscaldata#chg-chg_019fdeb1-4df5-7abc-b5ec-e418a8a47fde"
    }
  ],
  "days": [
    {
      "date": "2026-09-20",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-09",
      "total": 80,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-07",
      "total": 79,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-26",
      "total": 80,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-25",
      "total": 79,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 4
    },
    {
      "date": "2026-08-24",
      "total": 79,
      "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
    },
    {
      "date": "2026-08-13",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 19
    },
    {
      "date": "2026-08-11",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    }
  ]
}