{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "cyanheads-eurostat-mcp-server",
  "component": "eurostat",
  "generated_at": "2026-09-22T15:55:54.717Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 19,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a08493-22f4-7c52-97c0-880c07d9282d",
      "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 05:10:30.320739+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_01a08493-22f4-7c52-97c0-880c07d9282d"
    },
    {
      "id": "chg_01a05670-5c87-7d75-8883-b09bf322d1e7",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_download_dataset",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_download_dataset"
      },
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 06:09:59.227878+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “eurostat_download_dataset” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_01a05670-5c87-7d75-8883-b09bf322d1e7"
    },
    {
      "id": "chg_01a05670-5c89-7a66-b505-ba2a5d18220f",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_query_dataset",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_query_dataset"
      },
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 06:09:59.227878+00",
      "observed_since": "2026-08-31",
      "source": "scan",
      "summary": "Tool “eurostat_query_dataset” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_01a05670-5c89-7a66-b505-ba2a5d18220f"
    },
    {
      "id": "chg_01a03753-e2f7-7921-bcfb-9720fdef9e2f",
      "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 05:10:39.470595+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_01a03753-e2f7-7921-bcfb-9720fdef9e2f"
    },
    {
      "id": "chg_019fea0f-5439-74c6-b5d8-532a70d8b66b",
      "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 05:05:00.854679+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "HSTS header (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fea0f-5439-74c6-b5d8-532a70d8b66b"
    },
    {
      "id": "chg_019fea0f-543c-7009-8f3c-af3f2ba305b4",
      "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": "8"
      },
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 05:05:00.854679+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 8 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-eurostat-mcp-server/eurostat#chg-chg_019fea0f-543c-7009-8f3c-af3f2ba305b4"
    },
    {
      "id": "chg_019fea0f-543b-7076-861c-81af12a00e8f",
      "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 05:05:00.854679+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Transport (fail → pass)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fea0f-543b-7076-861c-81af12a00e8f"
    },
    {
      "id": "chg_019fdfc2-6c46-7e01-93e0-952d656aacfc",
      "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 05:04:48.639219+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "HSTS header (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fdfc2-6c46-7e01-93e0-952d656aacfc"
    },
    {
      "id": "chg_019fdfc2-6c46-7705-9bb7-63df84215560",
      "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 05:04:48.639219+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Stability (0.40 → unverified)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fdfc2-6c46-7705-9bb7-63df84215560"
    },
    {
      "id": "chg_019fdfc2-6c45-7745-9f01-902b8f79c88a",
      "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 05:04:48.639219+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Transport (pass → fail)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fdfc2-6c45-7745-9f01-902b8f79c88a"
    },
    {
      "id": "chg_019fdfc2-6c47-755e-bfe7-659d07d00682",
      "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 05:04:48.639219+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-eurostat-mcp-server/eurostat#chg-chg_019fdfc2-6c47-755e-bfe7-659d07d00682"
    },
    {
      "id": "chg_019fdfc2-6c49-739d-a7f2-9dc2aef8d5c0",
      "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 05:04:48.639219+00",
      "observed_since": "2026-08-07",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fdfc2-6c49-739d-a7f2-9dc2aef8d5c0"
    },
    {
      "id": "chg_019fcdee-eada-786b-96dd-beff344d340b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_search_datasets",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_search_datasets"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 18:00:14.777686+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_search_datasets” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcdee-eada-786b-96dd-beff344d340b"
    },
    {
      "id": "chg_019fcdee-ead9-7ce7-bcef-2a91adaf7c0d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_get_dimension_values",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_get_dimension_values"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 18:00:14.777686+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_get_dimension_values” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcdee-ead9-7ce7-bcef-2a91adaf7c0d"
    },
    {
      "id": "chg_019fcdee-ead9-7763-bc91-971254de5288",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_get_dataset_info",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_get_dataset_info"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 18:00:14.777686+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_get_dataset_info” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcdee-ead9-7763-bc91-971254de5288"
    },
    {
      "id": "chg_019fcdee-ead8-7377-82ff-dad13bd597b8",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_dataframe_query",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_dataframe_query"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 18:00:14.777686+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_dataframe_query” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcdee-ead8-7377-82ff-dad13bd597b8"
    },
    {
      "id": "chg_019fcdee-ead5-7cb1-ab6c-516946b08500",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_dataframe_describe",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_dataframe_describe"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 18:00:14.777686+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_dataframe_describe” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcdee-ead5-7cb1-ab6c-516946b08500"
    },
    {
      "id": "chg_019fcca5-51b7-7826-ba34-731ae05cff73",
      "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": "2026-08-04",
      "occurred_at": "2026-08-04 12:00:14.225911+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcca5-51b7-7826-ba34-731ae05cff73"
    },
    {
      "id": "chg_019fcca5-51b3-7e97-a294-03b15dc20a0e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "eurostat_query_dataset",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "eurostat_query_dataset"
      },
      "occurred_on": "2026-08-04",
      "occurred_at": "2026-08-04 12:00:14.225911+00",
      "observed_since": "2026-08-04",
      "source": "scan",
      "summary": "Tool “eurostat_query_dataset” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/cyanheads-eurostat-mcp-server/eurostat#chg-chg_019fcca5-51b3-7e97-a294-03b15dc20a0e"
    }
  ],
  "days": [
    {
      "date": "2026-09-22",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-09-16",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-09",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-08",
      "total": 80,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 93,
        "to": 97,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 28,
          "to_days": 29
        },
        "partial": false,
        "compared_to": "2026-09-07",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-07",
      "total": 79,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-31",
      "total": 80,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 5
    },
    {
      "date": "2026-08-26",
      "total": 80,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-08-25",
      "total": 79,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    }
  ]
}