{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usefulapi-cronofy",
  "component": "cronofy",
  "generated_at": "2026-09-21T06:23:37.065Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 17,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_019ffdd5-dc1a-7827-ad92-8b1b67237e56",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.57",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-14",
      "occurred_at": "2026-08-14 01:14:38.967503+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Stability (0.57 → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ffdd5-dc1a-7827-ad92-8b1b67237e56"
    },
    {
      "id": "chg_019ffdd5-dc1b-796f-b4f0-7c36aeb36755",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_unlisted",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-14",
      "occurred_at": "2026-08-14 01:14:38.967503+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ffdd5-dc1b-796f-b4f0-7c36aeb36755"
    },
    {
      "id": "chg_019ffdd5-dc1b-7e7c-ab4c-2c218ac86ee1",
      "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": "429",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-14",
      "occurred_at": "2026-08-14 01:14:38.967503+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ffdd5-dc1b-7e7c-ab4c-2c218ac86ee1"
    },
    {
      "id": "chg_019ffdd5-dc1c-7e32-9ee4-53f90526b82c",
      "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": "2026-08-14",
      "occurred_at": "2026-08-14 01:14:38.967503+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ffdd5-dc1c-7e32-9ee4-53f90526b82c"
    },
    {
      "id": "chg_019ff8ad-1e8a-789c-95c9-dfeaabf37bcd",
      "kind": "check.reverified",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.auth_gated",
      "to_code": "transport.verified",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 01:12:02.89319+00",
      "observed_since": "2026-08-12",
      "source": "scan",
      "summary": "Transport (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ff8ad-1e8a-789c-95c9-dfeaabf37bcd"
    },
    {
      "id": "chg_019ff8ad-1e8d-71cd-8bf0-71be3f812b9f",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 01:12:02.89319+00",
      "observed_since": "2026-08-12",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ff8ad-1e8d-71cd-8bf0-71be3f812b9f"
    },
    {
      "id": "chg_019ff389-1707-7aad-b6c9-a902d69d943e",
      "kind": "check.unverifiable",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.http_error",
      "to_code": "transport.auth_gated",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-12",
      "occurred_at": "2026-08-12 01:14:35.617812+00",
      "observed_since": "2026-08-11",
      "source": "scan",
      "summary": "Transport (fail → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019ff389-1707-7aad-b6c9-a902d69d943e"
    },
    {
      "id": "chg_019fc530-4785-77f1-92b8-18adb2ab4aa3",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_unlisted",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:15:03.337843+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc530-4785-77f1-92b8-18adb2ab4aa3"
    },
    {
      "id": "chg_019fc530-4786-7c20-83db-d477890840f6",
      "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": "429",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:15:03.337843+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc530-4786-7c20-83db-d477890840f6"
    },
    {
      "id": "chg_019fc530-4788-74c3-b2f4-c0aa93fb3e1b",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.20",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-03",
      "occurred_at": "2026-08-03 01:15:03.337843+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Stability (0.20 → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc530-4788-74c3-b2f4-c0aa93fb3e1b"
    },
    {
      "id": "chg_019fc530-478a-7a33-9771-3ee66205c90a",
      "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": "2026-08-03",
      "occurred_at": "2026-08-03 01:15:03.337843+00",
      "observed_since": "2026-08-02",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc530-478a-7a33-9771-3ee66205c90a"
    },
    {
      "id": "chg_019fc4cb-098d-7797-aec4-59c4572e968b",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-02",
      "occurred_at": "2026-08-02 23:24:28.41358+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc4cb-098d-7797-aec4-59c4572e968b"
    },
    {
      "id": "chg_019fc4cb-098e-751f-94b5-bc97e77652ca",
      "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": "2026-08-02",
      "occurred_at": "2026-08-02 23:24:28.41358+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fc4cb-098e-751f-94b5-bc97e77652ca"
    },
    {
      "id": "chg_019fbadb-5098-759e-b549-59acf4b0798c",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.13",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:06:03.014535+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Stability (0.13 → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fbadb-5098-759e-b549-59acf4b0798c"
    },
    {
      "id": "chg_019fbadb-5098-7ed7-8a4c-77e6a1669dd6",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_unlisted",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:06:03.014535+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fbadb-5098-7ed7-8a4c-77e6a1669dd6"
    },
    {
      "id": "chg_019fbadb-5099-749d-bb8f-3b2d34ce8764",
      "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": "429",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-01",
      "occurred_at": "2026-08-01 01:06:03.014535+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fbadb-5099-749d-bb8f-3b2d34ce8764"
    },
    {
      "id": "chg_019fbadb-509a-745a-831e-c8e25bbfefa4",
      "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": "2026-08-01",
      "occurred_at": "2026-08-01 01:06:03.014535+00",
      "observed_since": "2026-07-31",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-cronofy/cronofy#chg-chg_019fbadb-509a-745a-831e-c8e25bbfefa4"
    }
  ],
  "days": [
    {
      "date": "2026-08-26",
      "total": 18,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-14",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-08-13",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-08-12",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-11",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-03",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-08-02",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-08-01",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    }
  ]
}