{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "dev-workers-pathwren-www-ai-crawler-index",
  "component": "c-mcp-registry-official-mcp",
  "generated_at": "2026-09-21T22:17:06.112Z",
  "tracking_since": "2026-09-01",
  "counts": {
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    "security": 33,
    "functional": 0,
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  },
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      "occurred_on": "2026-09-15",
      "occurred_at": "2026-09-15 00:16:49.870157+00",
      "observed_since": "2026-09-14",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0a26c-6cf5-7b5d-8468-331e0878589d"
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    {
      "id": "chg_01a09d45-43a5-7880-9ffe-55de8d2e6182",
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-14",
      "occurred_at": "2026-09-14 00:15:57.298769+00",
      "observed_since": "2026-09-13",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a09d45-43a5-7880-9ffe-55de8d2e6182"
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    {
      "id": "chg_01a09824-7a3b-7473-972b-5a120f902942",
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-13",
      "occurred_at": "2026-09-13 00:22:02.511934+00",
      "observed_since": "2026-09-12",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a09824-7a3b-7473-972b-5a120f902942"
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    {
      "id": "chg_01a092eb-f369-7318-a1ec-c96c3ca4fc68",
      "kind": "server.instructions_changed",
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      "subject_kind": "server",
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      "from_code": null,
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-12",
      "occurred_at": "2026-09-12 00:02:11.86975+00",
      "observed_since": "2026-09-11",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a092eb-f369-7318-a1ec-c96c3ca4fc68"
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    {
      "id": "chg_01a08dd4-fa15-7ce6-8a62-a09152e3fa63",
      "kind": "server.instructions_changed",
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      "subject_kind": "server",
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      "from_code": null,
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-11",
      "occurred_at": "2026-09-11 00:19:00.182377+00",
      "observed_since": "2026-09-10",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a08dd4-fa15-7ce6-8a62-a09152e3fa63"
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    {
      "id": "chg_01a088a1-9521-700f-89a5-e21e4861c380",
      "kind": "server.instructions_changed",
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      "subject_kind": "server",
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      "from_code": null,
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      "materiality": "security",
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      "detail": {},
      "occurred_on": "2026-09-10",
      "occurred_at": "2026-09-10 00:04:45.924382+00",
      "observed_since": "2026-09-09",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a088a1-9521-700f-89a5-e21e4861c380"
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    {
      "id": "chg_01a0837a-ed33-7a97-b2a3-b93585826ade",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-09",
      "occurred_at": "2026-09-09 00:04:26.501977+00",
      "observed_since": "2026-09-08",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0837a-ed33-7a97-b2a3-b93585826ade"
    },
    {
      "id": "chg_01a07e56-87a5-7275-969c-d880c19bd6bc",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-08",
      "occurred_at": "2026-09-08 00:06:35.072736+00",
      "observed_since": "2026-09-07",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a07e56-87a5-7275-969c-d880c19bd6bc"
    },
    {
      "id": "chg_01a0792e-d248-7a4f-a09d-52c6e22ed977",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "changes_since",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "changes_since"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “changes_since” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d248-7a4f-a09d-52c6e22ed977"
    },
    {
      "id": "chg_01a0792e-d24b-7739-beb5-0b660fae413e",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "classify_user_agent",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "classify_user_agent"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “classify_user_agent” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24b-7739-beb5-0b660fae413e"
    },
    {
      "id": "chg_01a0792e-d24b-7ceb-9500-1181ddfe5f2b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "generate_robots_txt",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "generate_robots_txt"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “generate_robots_txt” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24b-7ceb-9500-1181ddfe5f2b"
    },
    {
      "id": "chg_01a0792e-d24c-7295-a4da-6f574acbdfc3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "is_verified_crawler_ip",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "is_verified_crawler_ip"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “is_verified_crawler_ip” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24c-7295-a4da-6f574acbdfc3"
    },
    {
      "id": "chg_01a0792e-d24c-7724-9d02-b3640c281af0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "list_crawlers",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "list_crawlers"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “list_crawlers” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24c-7724-9d02-b3640c281af0"
    },
    {
      "id": "chg_01a0792e-d24d-7888-b770-21e766705e63",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "lookup_crawler",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "lookup_crawler"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “lookup_crawler” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24d-7888-b770-21e766705e63"
    },
    {
      "id": "chg_01a0792e-d24d-7ca0-9cd5-e94b4f823f64",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "whats_changed",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "whats_changed"
      },
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "Tool “whats_changed” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24d-7ca0-9cd5-e94b4f823f64"
    },
    {
      "id": "chg_01a0792e-d24e-70f1-a7c8-fa982bfb8e1b",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-07",
      "occurred_at": "2026-09-07 00:05:06.713164+00",
      "observed_since": "2026-09-06",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0792e-d24e-70f1-a7c8-fa982bfb8e1b"
    },
    {
      "id": "chg_01a07408-308e-7cbb-aa94-e6f6bb2df3aa",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-06",
      "occurred_at": "2026-09-06 00:04:48.824997+00",
      "observed_since": "2026-09-05",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a07408-308e-7cbb-aa94-e6f6bb2df3aa"
    },
    {
      "id": "chg_01a06ee2-c6da-7b2d-93b9-f0eee55d0630",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-05",
      "occurred_at": "2026-09-05 00:05:50.885304+00",
      "observed_since": "2026-09-04",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a06ee2-c6da-7b2d-93b9-f0eee55d0630"
    },
    {
      "id": "chg_01a069c0-eab3-71c9-93a1-3eaae58e1fb5",
      "kind": "check.verdict",
      "family": "tool-safety-manipulation",
      "subject_kind": "check",
      "subject": "tool-safety-manipulation",
      "subject_child": "",
      "from_code": "toolsafety.manipulation_clean",
      "to_code": "toolsafety.manipulation_flagged",
      "from_value": "pass",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "unit": "server instructions",
        "units": "11",
        "judged": "11",
        "flagged": "10"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Judged manipulation (pass → fail)",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab3-71c9-93a1-3eaae58e1fb5"
    },
    {
      "id": "chg_01a069c0-eab5-75f2-a155-821e022a88f1",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "changes_since",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "changes_since"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “changes_since” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab5-75f2-a155-821e022a88f1"
    },
    {
      "id": "chg_01a069c0-eab5-7d2d-88bd-522d97214200",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "classify_user_agent",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "classify_user_agent"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “classify_user_agent” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab5-7d2d-88bd-522d97214200"
    },
    {
      "id": "chg_01a069c0-eab6-7419-afae-02acad0fbdac",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "example",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "example"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “example” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab6-7419-afae-02acad0fbdac"
    },
    {
      "id": "chg_01a069c0-eab6-7992-94e0-bef591867b44",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "generate_robots_txt",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "generate_robots_txt"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “generate_robots_txt” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab6-7992-94e0-bef591867b44"
    },
    {
      "id": "chg_01a069c0-eab6-7ee8-be64-729f9f170e88",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "is_verified_crawler_ip",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "is_verified_crawler_ip"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “is_verified_crawler_ip” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab6-7ee8-be64-729f9f170e88"
    },
    {
      "id": "chg_01a069c0-eab7-746d-b971-ddf868996f56",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "list_crawlers",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "list_crawlers"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “list_crawlers” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab7-746d-b971-ddf868996f56"
    },
    {
      "id": "chg_01a069c0-eab7-796a-81ba-d091a8dc977d",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "lookup_crawler",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "lookup_crawler"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “lookup_crawler” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab7-796a-81ba-d091a8dc977d"
    },
    {
      "id": "chg_01a069c0-eab8-753b-b866-9c549767d93c",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "whats_changed",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "whats_changed"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “whats_changed” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab8-753b-b866-9c549767d93c"
    },
    {
      "id": "chg_01a069c0-eab8-7dfb-b2ae-f14b82c4f186",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "whoami",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "whoami"
      },
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "Tool “whoami” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab8-7dfb-b2ae-f14b82c4f186"
    },
    {
      "id": "chg_01a069c0-eab9-741e-a8f1-bac42c01f186",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-04",
      "occurred_at": "2026-09-04 00:10:45.784386+00",
      "observed_since": "2026-09-03",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a069c0-eab9-741e-a8f1-bac42c01f186"
    },
    {
      "id": "chg_01a0649b-e70a-76f9-b3ec-69643a7b863b",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-03",
      "occurred_at": "2026-09-03 00:12:13.935816+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0649b-e70a-76f9-b3ec-69643a7b863b"
    },
    {
      "id": "chg_01a0619d-0190-727e-901b-0ab0c3116008",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "classify_user_agent",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "classify_user_agent"
      },
      "occurred_on": "2026-09-02",
      "occurred_at": "2026-09-02 10:14:34.210288+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “classify_user_agent” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0619d-0190-727e-901b-0ab0c3116008"
    },
    {
      "id": "chg_01a0619d-0190-7965-8a58-92828b101286",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "is_verified_crawler_ip",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "is_verified_crawler_ip"
      },
      "occurred_on": "2026-09-02",
      "occurred_at": "2026-09-02 10:14:34.210288+00",
      "observed_since": "2026-09-02",
      "source": "scan",
      "summary": "Tool “is_verified_crawler_ip” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a0619d-0190-7965-8a58-92828b101286"
    },
    {
      "id": "chg_01a05f75-f162-7011-87a9-5870e30f6db4",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-02",
      "occurred_at": "2026-09-02 00:12:40.12406+00",
      "observed_since": "2026-09-01",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/dev-workers-pathwren-www-ai-crawler-index/c-mcp-registry-official-mcp#chg-chg_01a05f75-f162-7011-87a9-5870e30f6db4"
    }
  ],
  "days": [
    {
      "date": "2026-09-21",
      "total": 78,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 63,
        "to": 67,
        "delta": 4,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 19,
          "to_days": 20
        },
        "partial": false,
        "compared_to": "2026-09-20",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-19",
      "total": 77,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 57,
        "to": 60,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 17,
          "to_days": 18
        },
        "partial": false,
        "compared_to": "2026-09-18",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 57 to 60. That category is still filling its 30-day observation window: 17 days of observed history at the previous scan, 18 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-17",
      "total": 76,
      "delta": 1,
      "tracked": true,
      "explained": false,
      "beyond_event_horizon": false,
      "attribution": {
        "category": "Stability & Change Management",
        "from": 50,
        "to": 53,
        "delta": 3,
        "others": [],
        "accrual": {
          "code": "stability.building_history",
          "from_days": 15,
          "to_days": 16
        },
        "partial": false,
        "compared_to": "2026-09-16",
        "summary": "No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes."
      },
      "event_count": 0
    },
    {
      "date": "2026-09-15",
      "total": 75,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-14",
      "total": 74,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-13",
      "total": 74,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-12",
      "total": 74,
      "delta": 1,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    },
    {
      "date": "2026-09-11",
      "total": 73,
      "delta": 0,
      "tracked": true,
      "explained": true,
      "beyond_event_horizon": false,
      "attribution": null,
      "event_count": 1
    }
  ]
}