{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-mcpcalc-calculator",
  "component": "api-v1-mcp",
  "generated_at": "2026-09-25T20:47:39.659Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 68,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0d128-5c3c-735f-8d66-5c6318ea5f17",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.churn",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "28",
        "added": "0",
        "breaks": "0",
        "removed": "10",
        "auth_transport": "0"
      },
      "occurred_on": "2026-09-24",
      "occurred_at": "2026-09-24 02:04:38.263953+00",
      "observed_since": "2026-09-23",
      "source": "scan",
      "summary": "Stability (pass → fail)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0d128-5c3c-735f-8d66-5c6318ea5f17"
    },
    {
      "id": "chg_01a0d128-5c3d-71ac-a8be-e444717cb7e9",
      "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": "2026-09-24",
      "occurred_at": "2026-09-24 02:04:38.263953+00",
      "observed_since": "2026-09-23",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0d128-5c3d-71ac-a8be-e444717cb7e9"
    },
    {
      "id": "chg_01a0d128-5c3d-79a2-93d7-e250933a431a",
      "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": "2026-09-24",
      "occurred_at": "2026-09-24 02:04:38.263953+00",
      "observed_since": "2026-09-23",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0d128-5c3d-79a2-93d7-e250933a431a"
    },
    {
      "id": "chg_01a0c6d7-db16-7466-a87c-6486ba84f53c",
      "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": "2026-09-22",
      "occurred_at": "2026-09-22 02:00:30.097848+00",
      "observed_since": "2026-09-21",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0c6d7-db16-7466-a87c-6486ba84f53c"
    },
    {
      "id": "chg_01a0c6d7-db17-7c9a-a4e0-1c0d59e3f02a",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.stable",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-22",
      "occurred_at": "2026-09-22 02:00:30.097848+00",
      "observed_since": "2026-09-21",
      "source": "scan",
      "summary": "Stability (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0c6d7-db17-7c9a-a4e0-1c0d59e3f02a"
    },
    {
      "id": "chg_01a0c6d7-db18-745c-beb1-d91dabd48220",
      "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": "10"
      },
      "occurred_on": "2026-09-22",
      "occurred_at": "2026-09-22 02:00:30.097848+00",
      "observed_since": "2026-09-21",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0c6d7-db18-745c-beb1-d91dabd48220"
    },
    {
      "id": "chg_01a0b764-cc92-7aa9-819e-851818fcd252",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.churn",
      "to_code": "stability.insufficient_history",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-19",
      "occurred_at": "2026-09-19 02:00:31.57494+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Stability (fail → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0b764-cc92-7aa9-819e-851818fcd252"
    },
    {
      "id": "chg_01a0b764-cc94-73d7-bb70-a9e508d18bfc",
      "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": "2026-09-19",
      "occurred_at": "2026-09-19 02:00:31.57494+00",
      "observed_since": "2026-09-18",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0b764-cc94-73d7-bb70-a9e508d18bfc"
    },
    {
      "id": "chg_01a0b23e-8aad-7050-afa9-6d42c991cd2d",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.churn",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "30",
        "added": "0",
        "breaks": "0",
        "removed": "10",
        "auth_transport": "0"
      },
      "occurred_on": "2026-09-18",
      "occurred_at": "2026-09-18 02:00:38.221196+00",
      "observed_since": "2026-09-17",
      "source": "scan",
      "summary": "Stability (unverified → fail)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0b23e-8aad-7050-afa9-6d42c991cd2d"
    },
    {
      "id": "chg_01a0ad18-6297-7bf9-bde1-73a86fadab9e",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.93",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-17",
      "occurred_at": "2026-09-17 02:00:51.507628+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Stability (0.93 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0ad18-6297-7bf9-bde1-73a86fadab9e"
    },
    {
      "id": "chg_01a0ad18-6299-700d-9dfe-7b53b10df2b8",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 02:00:51.507628+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0ad18-6299-700d-9dfe-7b53b10df2b8"
    },
    {
      "id": "chg_01a0ad18-6299-75bb-86f5-52d05f2567e8",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 02:00:51.507628+00",
      "observed_since": "2026-09-16",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0ad18-6299-75bb-86f5-52d05f2567e8"
    },
    {
      "id": "chg_01a0ad18-629a-74a6-a712-ea4ce31a00d4",
      "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": "2026-09-17",
      "occurred_at": "2026-09-17 02:00:51.507628+00",
      "observed_since": "2026-09-16",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0ad18-629a-74a6-a712-ea4ce31a00d4"
    },
    {
      "id": "chg_01a0a2cb-c681-70a1-a2bf-8ffb26e8c1f2",
      "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": "2026-09-15",
      "occurred_at": "2026-09-15 02:00:58.610807+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0a2cb-c681-70a1-a2bf-8ffb26e8c1f2"
    },
    {
      "id": "chg_01a0a2cb-c682-72f9-80cc-f68a5990b5e3",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.stable",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-15",
      "occurred_at": "2026-09-15 02:00:58.610807+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Stability (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0a2cb-c682-72f9-80cc-f68a5990b5e3"
    },
    {
      "id": "chg_01a0a2cb-c682-794c-8565-b111cc782616",
      "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": "10"
      },
      "occurred_on": "2026-09-15",
      "occurred_at": "2026-09-15 02:00:58.610807+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0a2cb-c682-794c-8565-b111cc782616"
    },
    {
      "id": "chg_01a09da5-0eac-7dc7-bb5e-60f0a71caddc",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.churn",
      "to_code": "stability.insufficient_history",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-14",
      "occurred_at": "2026-09-14 02:00:35.159906+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Stability (fail → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a09da5-0eac-7dc7-bb5e-60f0a71caddc"
    },
    {
      "id": "chg_01a09da5-0eae-77f3-889e-65143b1e3c68",
      "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": "2026-09-14",
      "occurred_at": "2026-09-14 02:00:35.159906+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a09da5-0eae-77f3-889e-65143b1e3c68"
    },
    {
      "id": "chg_01a0987e-c335-7ce5-a6bb-354d5d07e52f",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.churn",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "30",
        "added": "0",
        "breaks": "0",
        "removed": "10",
        "auth_transport": "0"
      },
      "occurred_on": "2026-09-13",
      "occurred_at": "2026-09-13 02:00:39.391359+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "Stability (unverified → fail)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0987e-c335-7ce5-a6bb-354d5d07e52f"
    },
    {
      "id": "chg_01a08e32-2d96-7da5-9525-dc07f66692d6",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 02:00:48.20398+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a08e32-2d96-7da5-9525-dc07f66692d6"
    },
    {
      "id": "chg_01a08e32-2d98-79a7-a3be-9c828eb0b97a",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.90",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-11",
      "occurred_at": "2026-09-11 02:00:48.20398+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Stability (0.90 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a08e32-2d98-79a7-a3be-9c828eb0b97a"
    },
    {
      "id": "chg_01a08e32-2d99-7113-9f03-5ecb81a7528d",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 02:00:48.20398+00",
      "observed_since": "2026-09-10",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a08e32-2d99-7113-9f03-5ecb81a7528d"
    },
    {
      "id": "chg_01a08e32-2d9b-74cf-bbe6-f3ec52f5ea79",
      "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": "2026-09-11",
      "occurred_at": "2026-09-11 02:00:48.20398+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a08e32-2d9b-74cf-bbe6-f3ec52f5ea79"
    },
    {
      "id": "chg_01a0890b-ed38-7aa8-856f-77250122ea6d",
      "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": "2026-09-10",
      "occurred_at": "2026-09-10 02:00:55.285466+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0890b-ed38-7aa8-856f-77250122ea6d"
    },
    {
      "id": "chg_01a0890b-ed39-7e7b-bfa7-a9ff67f971d6",
      "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": "10"
      },
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 02:00:55.285466+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0890b-ed39-7e7b-bfa7-a9ff67f971d6"
    },
    {
      "id": "chg_01a083e5-ffe0-7949-857a-90c0b230a336",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.insufficient_history",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 02:01:23.589027+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Stability (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a083e5-ffe0-7949-857a-90c0b230a336"
    },
    {
      "id": "chg_01a083e5-ffe3-73b6-a5e5-a1546f4b7067",
      "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": "2026-09-09",
      "occurred_at": "2026-09-09 02:01:23.589027+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a083e5-ffe3-73b6-a5e5-a1546f4b7067"
    },
    {
      "id": "chg_01a083e5-ffe3-7d02-8a55-8d07cde1aa72",
      "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": "2026-09-09",
      "occurred_at": "2026-09-09 02:01:23.589027+00",
      "observed_since": "2026-09-08",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a083e5-ffe3-7d02-8a55-8d07cde1aa72"
    },
    {
      "id": "chg_01a083e5-ffe6-799f-ad95-c864af70cb64",
      "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": "2026-09-09",
      "occurred_at": "2026-09-09 02:01:23.589027+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a083e5-ffe6-799f-ad95-c864af70cb64"
    },
    {
      "id": "chg_01a07ebf-8645-738d-b164-4cc9b5826089",
      "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": "2026-09-08",
      "occurred_at": "2026-09-08 02:01:15.918592+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07ebf-8645-738d-b164-4cc9b5826089"
    },
    {
      "id": "chg_01a07ebf-8655-7899-87cb-1a404c584a02",
      "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": "2026-09-08",
      "occurred_at": "2026-09-08 02:01:15.918592+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07ebf-8655-7899-87cb-1a404c584a02"
    },
    {
      "id": "chg_01a07ebf-8657-71a7-b34d-9d1e9495e544",
      "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": "10"
      },
      "occurred_on": "2026-09-08",
      "occurred_at": "2026-09-08 02:01:15.918592+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07ebf-8657-71a7-b34d-9d1e9495e544"
    },
    {
      "id": "chg_01a07999-4bda-7da3-9b25-94656aaa7094",
      "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": "2026-09-07",
      "occurred_at": "2026-09-07 02:01:24.510502+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07999-4bda-7da3-9b25-94656aaa7094"
    },
    {
      "id": "chg_01a07999-4bdb-7d92-8992-57b28262f1ee",
      "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": "2026-09-07",
      "occurred_at": "2026-09-07 02:01:24.510502+00",
      "observed_since": "2026-09-06",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07999-4bdb-7d92-8992-57b28262f1ee"
    },
    {
      "id": "chg_01a07473-07c2-7839-862a-be8f425a18ae",
      "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": "2026-09-06",
      "occurred_at": "2026-09-06 02:01:30.73911+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07473-07c2-7839-862a-be8f425a18ae"
    },
    {
      "id": "chg_01a07473-07c4-7921-8e70-47a6fecf110a",
      "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": "10"
      },
      "occurred_on": "2026-09-06",
      "occurred_at": "2026-09-06 02:01:30.73911+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a07473-07c4-7921-8e70-47a6fecf110a"
    },
    {
      "id": "chg_01a064ff-f768-7231-8e4c-cd2aa4f44df0",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.insufficient_history",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-03",
      "occurred_at": "2026-09-03 02:01:31.657809+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Stability (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a064ff-f768-7231-8e4c-cd2aa4f44df0"
    },
    {
      "id": "chg_01a064ff-f769-7768-910f-3817f3ef1da0",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 02:01:31.657809+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a064ff-f769-7768-910f-3817f3ef1da0"
    },
    {
      "id": "chg_01a064ff-f76a-700d-91af-f239f949d4d7",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 02:01:31.657809+00",
      "observed_since": "2026-09-02",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a064ff-f76a-700d-91af-f239f949d4d7"
    },
    {
      "id": "chg_01a064ff-f76b-77cb-9285-0b0e52afa516",
      "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": "2026-09-03",
      "occurred_at": "2026-09-03 02:01:31.657809+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a064ff-f76b-77cb-9285-0b0e52afa516"
    },
    {
      "id": "chg_01a04b40-830b-7dbb-ba95-aa347af6590d",
      "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": "2026-08-29",
      "occurred_at": "2026-08-29 02:01:54.120383+00",
      "observed_since": "2026-08-28",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a04b40-830b-7dbb-ba95-aa347af6590d"
    },
    {
      "id": "chg_01a04b40-830d-7a76-9113-0fede6faf3bf",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.stable",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-29",
      "occurred_at": "2026-08-29 02:01:54.120383+00",
      "observed_since": "2026-08-28",
      "source": "scan",
      "summary": "Stability (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a04b40-830d-7a76-9113-0fede6faf3bf"
    },
    {
      "id": "chg_01a04b40-830e-7209-810d-ce4c526f4d62",
      "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": "10"
      },
      "occurred_on": "2026-08-29",
      "occurred_at": "2026-08-29 02:01:54.120383+00",
      "observed_since": "2026-08-28",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a04b40-830e-7209-810d-ce4c526f4d62"
    },
    {
      "id": "chg_01a0461a-10fd-706a-99e4-713b02ca5e83",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.stable",
      "to_code": "stability.insufficient_history",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-28",
      "occurred_at": "2026-08-28 02:01:48.470148+00",
      "observed_since": "2026-08-27",
      "source": "scan",
      "summary": "Stability (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0461a-10fd-706a-99e4-713b02ca5e83"
    },
    {
      "id": "chg_01a0461a-10fe-77ff-9c26-57bb2e80084c",
      "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": "2026-08-28",
      "occurred_at": "2026-08-28 02:01:48.470148+00",
      "observed_since": "2026-08-27",
      "source": "scan",
      "summary": "Tool safety (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0461a-10fe-77ff-9c26-57bb2e80084c"
    },
    {
      "id": "chg_01a0461a-10ff-71dc-afe8-836541679411",
      "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": "2026-08-28",
      "occurred_at": "2026-08-28 02:01:48.470148+00",
      "observed_since": "2026-08-27",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0461a-10ff-71dc-afe8-836541679411"
    },
    {
      "id": "chg_01a0461a-1100-7c58-81f2-a6ddd7269879",
      "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": "2026-08-28",
      "occurred_at": "2026-08-28 02:01:48.470148+00",
      "observed_since": "2026-08-27",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a0461a-1100-7c58-81f2-a6ddd7269879"
    },
    {
      "id": "chg_01a040f3-b9d4-729a-9667-525e3abb4792",
      "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": "2026-08-27",
      "occurred_at": "2026-08-27 02:01:49.714723+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Injection markers (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a040f3-b9d4-729a-9667-525e3abb4792"
    },
    {
      "id": "chg_01a040f3-b9d6-719c-8121-9fd91f13bb25",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.stable",
      "from_value": "unverified",
      "to_value": "pass",
      "materiality": "security",
      "direction": "improvement",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 02:01:49.714723+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Stability (unverified → pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a040f3-b9d6-719c-8121-9fd91f13bb25"
    },
    {
      "id": "chg_01a040f3-b9d6-77f5-870b-9fd050a04481",
      "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": "10",
        "judged": "10"
      },
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 02:01:49.714723+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "First check of Judged manipulation (pass)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a040f3-b9d6-77f5-870b-9fd050a04481"
    },
    {
      "id": "chg_01a040f3-b9d7-7235-a73f-182920a9515f",
      "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": "10"
      },
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 02:01:49.714723+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a040f3-b9d7-7235-a73f-182920a9515f"
    },
    {
      "id": "chg_01a036a6-b77e-7108-854a-42cfde3876dd",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.97",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-25",
      "occurred_at": "2026-08-25 02:01:30.59418+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a036a6-b77e-7108-854a-42cfde3876dd"
    },
    {
      "id": "chg_01a036a6-b77f-799f-87d6-20773e30ba92",
      "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": "2026-08-25",
      "occurred_at": "2026-08-25 02:01:30.59418+00",
      "observed_since": "2026-08-24",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a036a6-b77f-799f-87d6-20773e30ba92"
    },
    {
      "id": "chg_01a036a6-b785-74cc-9552-c8046c064770",
      "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": "2026-08-25",
      "occurred_at": "2026-08-25 02:01:30.59418+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a036a6-b785-74cc-9552-c8046c064770"
    },
    {
      "id": "chg_01a02c59-f1da-7d6a-bee2-78683451520c",
      "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": "10"
      },
      "occurred_on": "2026-08-23",
      "occurred_at": "2026-08-23 02:01:27.213298+00",
      "observed_since": "2026-08-22",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a02c59-f1da-7d6a-bee2-78683451520c"
    },
    {
      "id": "chg_01a01ce6-b121-76ea-a377-67561788e759",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.80",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-20",
      "occurred_at": "2026-08-20 02:01:15.733167+00",
      "observed_since": "2026-08-19",
      "source": "scan",
      "summary": "Stability (0.80 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a01ce6-b121-76ea-a377-67561788e759"
    },
    {
      "id": "chg_01a01ce6-b124-7e5f-8834-919911dac39e",
      "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": "2026-08-20",
      "occurred_at": "2026-08-20 02:01:15.733167+00",
      "observed_since": "2026-08-19",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a01ce6-b124-7e5f-8834-919911dac39e"
    },
    {
      "id": "chg_01a01ce6-b12a-7996-9f92-0cdd9cca57d4",
      "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": "2026-08-20",
      "occurred_at": "2026-08-20 02:01:15.733167+00",
      "observed_since": "2026-08-19",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a01ce6-b12a-7996-9f92-0cdd9cca57d4"
    },
    {
      "id": "chg_01a017c0-4e08-7782-a812-a908a2e05fe1",
      "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": "10"
      },
      "occurred_on": "2026-08-19",
      "occurred_at": "2026-08-19 02:01:13.948549+00",
      "observed_since": "2026-08-18",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a017c0-4e08-7782-a812-a908a2e05fe1"
    },
    {
      "id": "chg_01a00d73-700c-7d5f-8332-3af90f7ae264",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.70",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-17",
      "occurred_at": "2026-08-17 02:01:04.223189+00",
      "observed_since": "2026-08-16",
      "source": "scan",
      "summary": "Stability (0.70 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a00d73-700c-7d5f-8332-3af90f7ae264"
    },
    {
      "id": "chg_01a00d73-700d-7dea-baf0-c6400b0ef8e9",
      "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": "2026-08-17",
      "occurred_at": "2026-08-17 02:01:04.223189+00",
      "observed_since": "2026-08-16",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a00d73-700d-7dea-baf0-c6400b0ef8e9"
    },
    {
      "id": "chg_01a00d73-700f-74e0-b18b-6274c148117d",
      "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": "2026-08-17",
      "occurred_at": "2026-08-17 02:01:04.223189+00",
      "observed_since": "2026-08-16",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_01a00d73-700f-74e0-b18b-6274c148117d"
    },
    {
      "id": "chg_019ffe00-9010-7d3d-834a-8a9b77cdb55f",
      "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": "10"
      },
      "occurred_on": "2026-08-14",
      "occurred_at": "2026-08-14 02:01:17.529815+00",
      "observed_since": "2026-08-13",
      "source": "scan",
      "summary": "Authorization (Authorisation not fully verified: no authorisation is required to call this server, and 10 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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019ffe00-9010-7d3d-834a-8a9b77cdb55f"
    },
    {
      "id": "chg_019fe967-2fb1-76e7-a957-edc2522773d4",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.churn",
      "to_code": "stability.insufficient_history",
      "from_value": "fail",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-10",
      "occurred_at": "2026-08-10 02:01:21.509843+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Stability (fail → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019fe967-2fb1-76e7-a957-edc2522773d4"
    },
    {
      "id": "chg_019fe967-2fb5-7b67-a190-a6d62a323f00",
      "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": "2026-08-10",
      "occurred_at": "2026-08-10 02:01:21.509843+00",
      "observed_since": "2026-08-09",
      "source": "scan",
      "summary": "Endpoint reachability (reachable → not serving MCP)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019fe967-2fb5-7b67-a190-a6d62a323f00"
    },
    {
      "id": "chg_019fe440-e1c8-7946-905f-3ea8807f3242",
      "kind": "check.reverified",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.insufficient_history",
      "to_code": "stability.churn",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "days": "14",
        "added": "0",
        "breaks": "0",
        "removed": "10",
        "auth_transport": "0"
      },
      "occurred_on": "2026-08-09",
      "occurred_at": "2026-08-09 02:01:25.159584+00",
      "observed_since": "2026-08-08",
      "source": "scan",
      "summary": "Stability (unverified → fail)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019fe440-e1c8-7946-905f-3ea8807f3242"
    },
    {
      "id": "chg_019fd9f4-e661-7f40-8ec5-a89467301ee5",
      "kind": "check.unverifiable",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.insufficient_history",
      "from_value": "0.37",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-07",
      "occurred_at": "2026-08-07 02:02:13.44129+00",
      "observed_since": "2026-08-06",
      "source": "scan",
      "summary": "Stability (0.37 → unverified)",
      "link": "https://verifymcp.io/servers/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019fd9f4-e661-7f40-8ec5-a89467301ee5"
    },
    {
      "id": "chg_019fd9f4-e663-77a3-af03-c94cbf7a91eb",
      "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": "2026-08-07",
      "occurred_at": "2026-08-07 02:02:13.44129+00",
      "observed_since": "2026-08-06",
      "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/com-mcpcalc-calculator/api-v1-mcp#chg-chg_019fd9f4-e663-77a3-af03-c94cbf7a91eb"
    }
  ],
  "days": [
    {
      "date": "2026-09-25",
      "total": 75,
      "delta": 41,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-24",
      "total": 34,
      "delta": -42,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 8
    },
    {
      "date": "2026-09-22",
      "total": 76,
      "delta": 43,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 10
    },
    {
      "date": "2026-09-19",
      "total": 33,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 3
    },
    {
      "date": "2026-09-18",
      "total": 34,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 7
    },
    {
      "date": "2026-09-17",
      "total": 33,
      "delta": -42,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 6
    },
    {
      "date": "2026-09-16",
      "total": 75,
      "delta": -1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-15",
      "total": 76,
      "delta": 43,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 10
    }
  ]
}