{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "ai-opencancer-opencancer",
  "component": "api-mcp",
  "generated_at": "2026-10-25T07:35:35.426Z",
  "tracking_since": "2026-10-15",
  "counts": {
    "critical": 0,
    "security": 5,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a142b5-d57a-75b2-aa6b-d11b0faa0f3e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "ask_opencancer",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "ask_opencancer"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 03:16:12.04241+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “ask_opencancer” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-opencancer-opencancer/api-mcp#chg-chg_01a142b5-d57a-75b2-aa6b-d11b0faa0f3e"
    },
    {
      "id": "chg_01a142b5-d57a-7c7b-9b4e-6b9892ab1e47",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "find_clinical_trials",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "find_clinical_trials"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 03:16:12.04241+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “find_clinical_trials” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-opencancer-opencancer/api-mcp#chg-chg_01a142b5-d57a-7c7b-9b4e-6b9892ab1e47"
    },
    {
      "id": "chg_01a142b5-d5df-7a95-9a7e-05cb5ba258ab",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_trial_details",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_trial_details"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 03:16:12.04241+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “get_trial_details” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-opencancer-opencancer/api-mcp#chg-chg_01a142b5-d5df-7a95-9a7e-05cb5ba258ab"
    },
    {
      "id": "chg_01a142b5-d629-7377-b4bf-b485c3cf0a80",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "open_case",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "open_case"
      },
      "occurred_on": "2026-10-16",
      "occurred_at": "2026-10-16 03:16:12.04241+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "Tool “open_case” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/ai-opencancer-opencancer/api-mcp#chg-chg_01a142b5-d629-7377-b4bf-b485c3cf0a80"
    },
    {
      "id": "chg_01a142b5-d694-7807-bdca-6135020d0a39",
      "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": "2026-10-16",
      "occurred_at": "2026-10-16 03:16:12.04241+00",
      "observed_since": "2026-10-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/ai-opencancer-opencancer/api-mcp#chg-chg_01a142b5-d694-7807-bdca-6135020d0a39"
    }
  ],
  "days": [
    {
      "date": "2026-10-25",
      "total": 77,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 30,
        "to": 33,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 9,
          "to_days": 10
        },
        "partial": false,
        "compared_to": "2026-10-24",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-23",
      "total": 76,
      "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": "2026-10-22",
        "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": "2026-10-21",
      "total": 75,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 17,
        "to": 20,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 5,
          "to_days": 6
        },
        "partial": false,
        "compared_to": "2026-10-20",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-19",
      "total": 74,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 10,
        "to": 13,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 3,
          "to_days": 4
        },
        "partial": false,
        "compared_to": "2026-10-18",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-17",
      "total": 73,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 3,
        "to": 7,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 1,
          "to_days": 2
        },
        "partial": false,
        "compared_to": "2026-10-16",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-10-16",
      "total": 72,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 9
    },
    {
      "date": "2026-10-15",
      "total": 72,
      "delta": null,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 0
    }
  ]
}