{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usefulapi-acuity-scheduling",
  "component": "acuity-scheduling",
  "generated_at": "2026-09-21T06:23:31.494Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 13,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0bda1-120b-78ae-b714-e51a1e5b3cc8",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.churn",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "30",
        "added": "0",
        "breaks": "0",
        "removed": "0",
        "auth_transport": "1"
      },
      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 07:04:04.646715+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Stability (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0bda1-120b-78ae-b714-e51a1e5b3cc8"
    },
    {
      "id": "chg_01a0bda1-120d-711c-afca-080f33c515d6",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.none_destructive_unverified",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "tool": "acuity_create_appointment"
      },
      "occurred_on": "2026-09-20",
      "occurred_at": "2026-09-20 07:04:04.646715+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0bda1-120d-711c-afca-080f33c515d6"
    },
    {
      "id": "chg_01a0ae2d-4f6e-7061-a9bd-06cce0e15a80",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 07:03:19.921875+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0ae2d-4f6e-7061-a9bd-06cce0e15a80"
    },
    {
      "id": "chg_01a0ae2d-4f6f-746a-9eb4-2d4ead42a651",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.auth_gated",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 07:03:19.921875+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0ae2d-4f6f-746a-9eb4-2d4ead42a651"
    },
    {
      "id": "chg_01a0ae2d-4f6f-7e34-be68-cd6bcae167f5",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.stable",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 07:03:19.921875+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Stability (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0ae2d-4f6f-7e34-be68-cd6bcae167f5"
    },
    {
      "id": "chg_01a0a906-5ff9-743f-8d52-31ec047a2049",
      "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": "2026-09-16",
      "occurred_at": "2026-09-16 07:02:42.240519+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0a906-5ff9-743f-8d52-31ec047a2049"
    },
    {
      "id": "chg_01a0a906-5ffa-74db-b4d8-95eea75621af",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.insufficient_history",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 07:02:42.240519+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Stability (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0a906-5ffa-74db-b4d8-95eea75621af"
    },
    {
      "id": "chg_01a0a906-5ffa-79bb-80b4-32ce24e8f46f",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.auth_gated",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 07:02:42.240519+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0a906-5ffa-79bb-80b4-32ce24e8f46f"
    },
    {
      "id": "chg_01a0a906-5ffc-7208-bd2e-fc700e15d574",
      "kind": "capture.status_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "capture",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": "verified",
      "to_value": "auth_gated",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "to": "auth_gated",
        "from": "verified"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 07:02:42.240519+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → behind authorisation)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a0a906-5ffc-7208-bd2e-fc700e15d574"
    },
    {
      "id": "chg_01a037c5-08f7-79f8-923e-c11f9459f6c7",
      "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 07:14:14.715271+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_01a037c5-08f7-79f8-923e-c11f9459f6c7"
    },
    {
      "id": "chg_019fc14d-5ce7-71d7-be5a-0ae94f1ab64f",
      "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": "2026-08-02",
      "occurred_at": "2026-08-02 07:08:20.57255+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_019fc14d-5ce7-71d7-be5a-0ae94f1ab64f"
    },
    {
      "id": "chg_019fc14d-5ce7-7942-931b-7c4283cdffdf",
      "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": "2026-08-02",
      "occurred_at": "2026-08-02 07:08:20.57255+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Stability (0.20 → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_019fc14d-5ce7-7942-931b-7c4283cdffdf"
    },
    {
      "id": "chg_019fc14d-5ce8-7da9-b0b1-3bf48ba7f482",
      "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": "2026-08-02",
      "occurred_at": "2026-08-02 07:08:20.57255+00",
      "observed_since": "2026-08-01",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-acuity-scheduling/acuity-scheduling#chg-chg_019fc14d-5ce8-7da9-b0b1-3bf48ba7f482"
    }
  ],
  "days": [
    {
      "date": "2026-09-20",
      "total": 74,
      "delta": -13,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-17",
      "total": 87,
      "delta": 59,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-09-16",
      "total": 28,
      "delta": -59,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-08-26",
      "total": 87,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-25",
      "total": 86,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-24",
      "total": 86,
      "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": "2026-08-11",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-02",
      "total": 0,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    }
  ]
}