{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usefulapi-castle",
  "component": "castle",
  "generated_at": "2026-10-04T12:21:40.636Z",
  "tracking_since": "2026-09-29",
  "counts": {
    "critical": 0,
    "security": 12,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a104be-8173-796c-aa1d-7d0e9ded253f",
      "kind": "check.reverified",
      "family": "https",
      "subject_kind": "check",
      "subject": "https",
      "subject_child": "",
      "from_code": "https.inconclusive",
      "to_code": "https.enforced",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 02:29:16.197519+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "HTTPS (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a104be-8173-796c-aa1d-7d0e9ded253f"
    },
    {
      "id": "chg_01a104be-8174-7ac2-a833-8373dca0ae42",
      "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": "2026-10-04",
      "occurred_at": "2026-10-04 02:29:16.197519+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a104be-8174-7ac2-a833-8373dca0ae42"
    },
    {
      "id": "chg_01a104be-8175-7103-92d8-c95b7e90ba6e",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.unreachable",
      "to_code": "auth.none_unlisted",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-10-04",
      "occurred_at": "2026-10-04 02:29:16.197519+00",
      "observed_since": "2026-10-03",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the whole tool list to see what that exposes.)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a104be-8175-7103-92d8-c95b7e90ba6e"
    },
    {
      "id": "chg_01a0f54a-1e8b-7766-bb40-a0d1685f6601",
      "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 02:27:50.474675+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f54a-1e8b-7766-bb40-a0d1685f6601"
    },
    {
      "id": "chg_01a0f54a-1e8b-7ca0-9111-9f6b49d9e195",
      "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 02:27:50.474675+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f54a-1e8b-7ca0-9111-9f6b49d9e195"
    },
    {
      "id": "chg_01a0f54a-1e8c-714f-add4-931ae5bed601",
      "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 02:27:50.474675+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Authorization (pass → unverified)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f54a-1e8c-714f-add4-931ae5bed601"
    },
    {
      "id": "chg_01a0f54a-1e8d-7219-add5-24f5204d7cac",
      "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 02:27:50.474675+00",
      "observed_since": "2026-09-30",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f54a-1e8d-7219-add5-24f5204d7cac"
    },
    {
      "id": "chg_01a0f024-2574-7ef6-bdc2-ac265d1b17d1",
      "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": "2026-09-30",
      "occurred_at": "2026-09-30 02:28:15.820169+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Transport (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f024-2574-7ef6-bdc2-ac265d1b17d1"
    },
    {
      "id": "chg_01a0f024-2575-76a3-8a06-7a9e3225aa3b",
      "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 02:28:15.820169+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Authorization (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f024-2575-76a3-8a06-7a9e3225aa3b"
    },
    {
      "id": "chg_01a0f024-2575-7c2f-9274-1b6fa1734cf9",
      "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 02:28:15.820169+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f024-2575-7c2f-9274-1b6fa1734cf9"
    },
    {
      "id": "chg_01a0f024-2576-72dd-8321-0422b0e03d8b",
      "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": "14",
        "judged": "14"
      },
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 02:28:15.820169+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f024-2576-72dd-8321-0422b0e03d8b"
    },
    {
      "id": "chg_01a0f024-2578-7760-b222-46170f9b3e38",
      "kind": "check.appeared",
      "family": "auth-registration",
      "subject_kind": "check",
      "subject": "auth-registration",
      "subject_child": "",
      "from_code": null,
      "to_code": "auth.registration_dcr_only",
      "from_value": null,
      "to_value": "partial",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-30",
      "occurred_at": "2026-09-30 02:28:15.820169+00",
      "observed_since": "2026-09-29",
      "source": "scan",
      "summary": "First check of Authorization (partial)",
      "link": "https://verifymcp.io/servers/io-usefulapi-castle/castle#chg-chg_01a0f024-2578-7760-b222-46170f9b3e38"
    }
  ],
  "days": [
    {
      "date": "2026-10-04",
      "total": 33,
      "delta": 15,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "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": 12
    },
    {
      "date": "2026-09-29",
      "total": 18,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}