{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usefulapi-checkfront",
  "component": "checkfront",
  "generated_at": "2026-10-04T10:44:04.585Z",
  "tracking_since": "2026-09-29",
  "counts": {
    "critical": 0,
    "security": 10,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a1052a-acaf-7d12-be74-706808238cae",
      "kind": "check.unverifiable",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.verified",
      "to_code": "transport.auth_gated",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 04:27:25.190384+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "Transport (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a1052a-acaf-7d12-be74-706808238cae"
    },
    {
      "id": "chg_01a0fffe-b97e-7d15-831f-221e7ceb06ad",
      "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": "2026-10-03",
      "occurred_at": "2026-10-03 04:21:18.702975+00",
      "observed_since": "2026-10-02",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0fffe-b97e-7d15-831f-221e7ceb06ad"
    },
    {
      "id": "chg_01a0f5b5-4fb7-74fb-99cc-839818f92a88",
      "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": "2026-10-01",
      "occurred_at": "2026-10-01 04:24:55.40149+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f5b5-4fb7-74fb-99cc-839818f92a88"
    },
    {
      "id": "chg_01a0f5b5-4fb7-79fd-aaba-2f04948772cc",
      "kind": "check.unverifiable",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.injection_clean",
      "to_code": "toolsafety.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 04:24:55.40149+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f5b5-4fb7-79fd-aaba-2f04948772cc"
    },
    {
      "id": "chg_01a0f5b5-4fb7-7eb4-b833-07ce8b92111b",
      "kind": "check.unverifiable",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.rfc9728_invoke",
      "to_code": "auth.unreachable",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-01",
      "occurred_at": "2026-10-01 04:24:55.40149+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f5b5-4fb7-7eb4-b833-07ce8b92111b"
    },
    {
      "id": "chg_01a0f5b5-4fb8-7ea8-85fc-22b10f937350",
      "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": "2026-10-01",
      "occurred_at": "2026-10-01 04:24:55.40149+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f5b5-4fb8-7ea8-85fc-22b10f937350"
    },
    {
      "id": "chg_01a0f091-7882-78d9-868c-b4ac61cec77d",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 04:27:40.493487+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f091-7882-78d9-868c-b4ac61cec77d"
    },
    {
      "id": "chg_01a0f091-7882-7d76-93bd-63455f1950e0",
      "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": "2026-09-30",
      "occurred_at": "2026-09-30 04:27:40.493487+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f091-7882-7d76-93bd-63455f1950e0"
    },
    {
      "id": "chg_01a0f091-7883-735d-88a7-d20b995aea1f",
      "kind": "check.reverified",
      "family": "tool-safety-injection",
      "subject_kind": "check",
      "subject": "tool-safety-injection",
      "subject_child": "",
      "from_code": "toolsafety.unreachable",
      "to_code": "toolsafety.injection_clean",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 04:27:40.493487+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f091-7883-735d-88a7-d20b995aea1f"
    },
    {
      "id": "chg_01a0f091-7883-77e4-8850-0c0980f9108f",
      "kind": "check.appeared",
      "family": "tool-safety-manipulation",
      "subject_kind": "check",
      "subject": "tool-safety-manipulation",
      "subject_child": "",
      "from_code": null,
      "to_code": "toolsafety.manipulation_clean",
      "from_value": null,
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "units": "20",
        "judged": "20"
      },
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 04:27:40.493487+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-checkfront/checkfront#chg-chg_01a0f091-7883-77e4-8850-0c0980f9108f"
    }
  ],
  "days": [
    {
      "date": "2026-10-04",
      "total": 18,
      "delta": -10,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-10-03",
      "total": 28,
      "delta": 10,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-10-01",
      "total": 18,
      "delta": -54,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-09-30",
      "total": 72,
      "delta": 54,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 11
    },
    {
      "date": "2026-09-29",
      "total": 18,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}