{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "io-usero-usero",
  "component": "usero",
  "generated_at": "2026-09-21T02:18:07.645Z",
  "tracking_since": "2026-09-04",
  "counts": {
    "critical": 0,
    "security": 17,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0bdd4-e56b-7225-b807-1ae1eadcccec",
      "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": "2026-09-20",
      "occurred_at": "2026-09-20 08:00:40.637854+00",
      "observed_since": "2026-09-19",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a0bdd4-e56b-7225-b807-1ae1eadcccec"
    },
    {
      "id": "chg_01a0b8ae-847c-762c-8376-c98eff3f120e",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 08:00:39.834757+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a0b8ae-847c-762c-8376-c98eff3f120e"
    },
    {
      "id": "chg_01a099c8-9d9e-7bb4-8662-4748523997ce",
      "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": "2026-09-13",
      "occurred_at": "2026-09-13 08:00:56.497297+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a099c8-9d9e-7bb4-8662-4748523997ce"
    },
    {
      "id": "chg_01a08a55-d3be-7217-a17b-0bd64f71afa8",
      "kind": "check.verdict",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.challenge_only_invoke",
      "to_code": "auth.rfc9728_invoke",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 08:01:15.475901+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Authorization (fail → pass)",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08a55-d3be-7217-a17b-0bd64f71afa8"
    },
    {
      "id": "chg_01a08a55-d3bf-74c2-9f34-7342074f6202",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 08:01:15.475901+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "First check of Authorization (partial)",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08a55-d3bf-74c2-9f34-7342074f6202"
    },
    {
      "id": "chg_01a08a55-d3c0-7197-aa9b-538b363c02a9",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "check_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "check_signup"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 08:01:15.475901+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “check_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08a55-d3c0-7197-aa9b-538b363c02a9"
    },
    {
      "id": "chg_01a08a55-d3c0-7783-ba67-b19345edfe8a",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "start_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "start_signup"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 08:01:15.475901+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “start_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08a55-d3c0-7783-ba67-b19345edfe8a"
    },
    {
      "id": "chg_01a08a55-d3c2-7017-abaf-5c172efd2166",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 08:01:15.475901+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08a55-d3c2-7017-abaf-5c172efd2166"
    },
    {
      "id": "chg_01a0852f-a746-7134-b261-31addc06659c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "check_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "check_signup"
      },
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 08:01:27.7943+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Tool “check_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a0852f-a746-7134-b261-31addc06659c"
    },
    {
      "id": "chg_01a0852f-a746-7ab0-b680-2ecffbbfc90b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "start_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "start_signup"
      },
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 08:01:27.7943+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Tool “start_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a0852f-a746-7ab0-b680-2ecffbbfc90b"
    },
    {
      "id": "chg_01a0852f-a747-74b5-a0b6-b2c0c249a232",
      "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": "2026-09-09",
      "occurred_at": "2026-09-09 08:01:27.7943+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a0852f-a747-74b5-a0b6-b2c0c249a232"
    },
    {
      "id": "chg_01a08009-5595-7448-9e31-2ddd3b75f45a",
      "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": "2026-09-08",
      "occurred_at": "2026-09-08 08:01:29.889608+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a08009-5595-7448-9e31-2ddd3b75f45a"
    },
    {
      "id": "chg_01a07ae2-ddc7-7103-a54c-090c1f25e806",
      "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": "2026-09-07",
      "occurred_at": "2026-09-07 08:01:23.118909+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a07ae2-ddc7-7103-a54c-090c1f25e806"
    },
    {
      "id": "chg_01a075bc-8a83-7d2b-88de-eea24e273e33",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "check_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "check_signup"
      },
      "occurred_on": "2026-09-06",
      "occurred_at": "2026-09-06 08:01:25.457626+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “check_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a075bc-8a83-7d2b-88de-eea24e273e33"
    },
    {
      "id": "chg_01a075bc-8a84-7e57-aeab-6e7082008b8f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "start_signup",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "start_signup"
      },
      "occurred_on": "2026-09-06",
      "occurred_at": "2026-09-06 08:01:25.457626+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Tool “start_signup” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a075bc-8a84-7e57-aeab-6e7082008b8f"
    },
    {
      "id": "chg_01a075bc-8a86-736e-ba12-6da5d7324e1e",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 08:01:25.457626+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a075bc-8a86-736e-ba12-6da5d7324e1e"
    },
    {
      "id": "chg_01a072ba-5680-7aa9-bed7-075d920a3823",
      "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": "2026-09-05",
      "occurred_at": "2026-09-05 18:00:08.934207+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/io-usero-usero/usero#chg-chg_01a072ba-5680-7aa9-bed7-075d920a3823"
    }
  ],
  "days": [
    {
      "date": "2026-09-20",
      "total": 77,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-09-19",
      "total": 77,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-18",
      "total": 77,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 43,
        "to": 47,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 13,
          "to_days": 14
        },
        "partial": false,
        "compared_to": "2026-09-17",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-15",
      "total": 76,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 33,
        "to": 37,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 10,
          "to_days": 11
        },
        "partial": false,
        "compared_to": "2026-09-14",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-13",
      "total": 75,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 2
    },
    {
      "date": "2026-09-12",
      "total": 75,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 23,
        "to": 27,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 7,
          "to_days": 8
        },
        "partial": false,
        "compared_to": "2026-09-11",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-10",
      "total": 74,
      "delta": 3,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-09-09",
      "total": 71,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    }
  ]
}