{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "cyanheads-usaspending-mcp-server",
  "component": "usaspending",
  "generated_at": "2026-09-21T02:24:40.769Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 15,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a08535-250c-76d2-ac9c-4342d91b0ae2",
      "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 08:07:27.655963+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_01a08535-250c-76d2-ac9c-4342d91b0ae2"
    },
    {
      "id": "chg_019feab3-fbc4-71df-bf75-6c66dff08c0b",
      "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": "18"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 08:04:51.686029+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 18 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-usaspending-mcp-server/usaspending#chg-chg_019feab3-fbc4-71df-bf75-6c66dff08c0b"
    },
    {
      "id": "chg_019feab3-fbc1-7d9e-8411-cb6c4ceb3f0f",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.churn",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "15",
        "added": "1",
        "breaks": "0",
        "removed": "1",
        "auth_transport": "0"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 08:04:51.686029+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Stability (unverified → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019feab3-fbc1-7d9e-8411-cb6c4ceb3f0f"
    },
    {
      "id": "chg_019feab3-fbc3-708d-8189-a6e1f7da4efa",
      "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 08:04:51.686029+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019feab3-fbc3-708d-8189-a6e1f7da4efa"
    },
    {
      "id": "chg_019feab3-fbc3-7d13-9cc3-f37c248abfb3",
      "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 08:04:51.686029+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019feab3-fbc3-7d13-9cc3-f37c248abfb3"
    },
    {
      "id": "chg_019fe067-185b-7a8b-9d35-c7048fdcf7fb",
      "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 08:04:40.65179+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fe067-185b-7a8b-9d35-c7048fdcf7fb"
    },
    {
      "id": "chg_019fe067-185a-717f-96cc-79c3df806b06",
      "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 08:04:40.65179+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "HSTS header (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fe067-185a-717f-96cc-79c3df806b06"
    },
    {
      "id": "chg_019fe067-1859-7b7c-be3a-2dc99db577d2",
      "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 08:04:40.65179+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fe067-1859-7b7c-be3a-2dc99db577d2"
    },
    {
      "id": "chg_019fe067-185a-76f4-96bc-4a1676148eb5",
      "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 08:04:40.65179+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-usaspending-mcp-server/usaspending#chg-chg_019fe067-185a-76f4-96bc-4a1676148eb5"
    },
    {
      "id": "chg_019fe067-1858-7d90-a5b0-fe887676fc28",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.churn",
      "to_code": "stability.insufficient_history",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 08:04:40.65179+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Stability (fail → unverified)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fe067-1858-7d90-a5b0-fe887676fc28"
    },
    {
      "id": "chg_019fa52b-dbd8-7b7c-bbb4-88cc5c3648b0",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.churn",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "1",
        "added": "1",
        "breaks": "0",
        "removed": "1",
        "auth_transport": "0"
      },
      "occurred_on": "2026-07-27",
      "occurred_at": "2026-07-27 20:02:22.773579+00",
      "observed_since": "2026-07-26",
      "source": "scan",
      "summary": "Stability (unverified → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fa52b-dbd8-7b7c-bbb4-88cc5c3648b0"
    },
    {
      "id": "chg_019fa52b-dbd9-74f2-9e12-56282466ef22",
      "kind": "tool.removed",
      "family": "",
      "subject_kind": "tool",
      "subject": "usaspending_autocomplete",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "usaspending_autocomplete"
      },
      "occurred_on": "2026-07-27",
      "occurred_at": "2026-07-27 20:02:22.773579+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “usaspending_autocomplete” was removed",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fa52b-dbd9-74f2-9e12-56282466ef22"
    },
    {
      "id": "chg_019fa52b-dbdd-7d50-b39c-a7c0d7b2e1c8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "usaspending_spending_by_category",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "usaspending_spending_by_category"
      },
      "occurred_on": "2026-07-27",
      "occurred_at": "2026-07-27 20:02:22.773579+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “usaspending_spending_by_category” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fa52b-dbdd-7d50-b39c-a7c0d7b2e1c8"
    },
    {
      "id": "chg_019fa52b-dbdf-7cdc-9482-18ac4e283d95",
      "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": "2026-07-27",
      "occurred_at": "2026-07-27 20:02:22.773579+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fa52b-dbdf-7cdc-9482-18ac4e283d95"
    },
    {
      "id": "chg_019fa4f3-dd4b-78e7-b8c4-6d9e8008c755",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "usaspending_spending_over_time",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "usaspending_spending_over_time"
      },
      "occurred_on": "2026-07-27",
      "occurred_at": "2026-07-27 19:01:13.098179+00",
      "observed_since": "2026-07-27",
      "source": "scan",
      "summary": "Tool “usaspending_spending_over_time” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-usaspending-mcp-server/usaspending#chg-chg_019fa4f3-dd4b-78e7-b8c4-6d9e8008c755"
    }
  ],
  "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": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-08",
      "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": "2026-09-07",
        "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": 79,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-26",
      "total": 80,
      "delta": 2,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-25",
      "total": 78,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-08-24",
      "total": 78,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 88,
        "to": 91,
        "delta": 3,
        "others": [],
        "accrual": null,
        "partial": false,
        "compared_to": "2026-08-23",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 88 to 91."
      },
      "event_count": 0
    },
    {
      "date": "2026-08-11",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    }
  ]
}