{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "cyanheads-pubmed-mcp-server",
  "component": "pubmed",
  "generated_at": "2026-09-21T04:56:59.787Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 14,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a08dc6-606c-7ee9-a64e-d0e777e0c0f5",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pubmed_fetch_fulltext",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pubmed_fetch_fulltext"
      },
      "occurred_on": "2026-09-11",
      "occurred_at": "2026-09-11 00:03:03.31295+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool “pubmed_fetch_fulltext” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a08dc6-606c-7ee9-a64e-d0e777e0c0f5"
    },
    {
      "id": "chg_01a085a8-5d88-7c00-b341-a23ccae5701f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pubmed_fetch_fulltext",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pubmed_fetch_fulltext"
      },
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 10:13:18.829122+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “pubmed_fetch_fulltext” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a085a8-5d88-7c00-b341-a23ccae5701f"
    },
    {
      "id": "chg_01a085a8-5d87-7d67-8d44-5b1ee44c0592",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "pubmed_fetch_articles",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "pubmed_fetch_articles"
      },
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 10:13:18.829122+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Tool “pubmed_fetch_articles” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a085a8-5d87-7d67-8d44-5b1ee44c0592"
    },
    {
      "id": "chg_01a08539-ee10-7dfd-b675-90f3f5a65e54",
      "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": "2026-09-09",
      "occurred_at": "2026-09-09 08:12:41.260683+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a08539-ee10-7dfd-b675-90f3f5a65e54"
    },
    {
      "id": "chg_01a04d02-bf80-78b4-b29c-c9308260129a",
      "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": "2026-08-29",
      "occurred_at": "2026-08-29 10:13:40.748149+00",
      "observed_since": "2026-08-28",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a04d02-bf80-78b4-b29c-c9308260129a"
    },
    {
      "id": "chg_01a03869-92f1-71e3-b899-eeff0a049979",
      "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 10:13:57.938458+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_01a03869-92f1-71e3-b899-eeff0a049979"
    },
    {
      "id": "chg_019feb25-d850-749e-aac1-ab170ada9cfe",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_unlisted",
      "to_code": "auth.none_undeclared",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "auth": "none",
        "undeclared_tools": "11"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 10:09:13.727289+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 11 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019feb25-d850-749e-aac1-ab170ada9cfe"
    },
    {
      "id": "chg_019feb25-d84d-7108-baf8-651d555d2b15",
      "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": "2026-08-10",
      "occurred_at": "2026-08-10 10:09:13.727289+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019feb25-d84d-7108-baf8-651d555d2b15"
    },
    {
      "id": "chg_019feb25-d84a-7769-a86c-7fb9b895822a",
      "kind": "check.verdict",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.hsts_absent",
      "to_code": "headers.hsts_present",
      "from_value": "fail",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 10:09:13.727289+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019feb25-d84a-7769-a86c-7fb9b895822a"
    },
    {
      "id": "chg_019fe0d8-d2e0-72c7-93af-5d58fb157c76",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.40",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 10:08:53.962654+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Stability (0.40 → unverified)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019fe0d8-d2e0-72c7-93af-5d58fb157c76"
    },
    {
      "id": "chg_019fe0d8-d2e1-74a8-8e6c-b576e3e81d64",
      "kind": "check.verdict",
      "family": "hsts",
      "subject_kind": "check",
      "subject": "hsts",
      "subject_child": "",
      "from_code": "headers.hsts_present",
      "to_code": "headers.hsts_absent",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 10:08:53.962654+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "HSTS header (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019fe0d8-d2e1-74a8-8e6c-b576e3e81d64"
    },
    {
      "id": "chg_019fe0d8-d2e1-7e27-b23b-28a0dee407ca",
      "kind": "check.reason",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_undeclared",
      "to_code": "auth.none_unlisted",
      "from_value": "unverified",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 10:08:53.962654+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019fe0d8-d2e1-7e27-b23b-28a0dee407ca"
    },
    {
      "id": "chg_019fe0d8-d2e2-7ea4-83b4-7cc20e881f7e",
      "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": "2026-08-08",
      "occurred_at": "2026-08-08 10:08:53.962654+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019fe0d8-d2e2-7ea4-83b4-7cc20e881f7e"
    },
    {
      "id": "chg_019fe0d8-d2df-7417-95d0-d47d7f8a0d06",
      "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": "530",
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-08",
      "occurred_at": "2026-08-08 10:08:53.962654+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-pubmed-mcp-server/pubmed#chg-chg_019fe0d8-d2df-7417-95d0-d47d7f8a0d06"
    }
  ],
  "days": [
    {
      "date": "2026-09-18",
      "total": 82,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-13",
      "total": 82,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-11",
      "total": 82,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 16
    },
    {
      "date": "2026-09-09",
      "total": 82,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 10
    },
    {
      "date": "2026-09-07",
      "total": 82,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-03",
      "total": 83,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-29",
      "total": 83,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-28",
      "total": 82,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    }
  ]
}