{
 "tool": "whoami",
 "endpoint": "https://www.pathwren.workers.dev/tools/whoami",
 "asked": {},
 "summary": "You are calling as: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)\nFrom: 216.73.217.62 (CF-Connecting-IP)\nOur own instrument books that user-agent as: crawler.\nWe have seen you here before: 1221 request(s) between 2026-09-01T00:46:32+00:00 and 2026-09-02T06:04:46+00:00, matched on your exact user-agent string. Your dossier: https://www.pathwren.workers.dev/bot/claudebot.html\nThe index identifies you as ClaudeBot (Anthropic, ai-training); a user-agent is still a claim.\nYour address is in none of the operator prefixes mirrored here — which is not evidence of a fake, only an absence.\n\nNothing was fetched to answer this and no argument was needed. The same answer over plain HTTP: https://www.pathwren.workers.dev/tools/whoami?s=client-dossiers",
 "answer": {
  "you": {
   "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
   "address": "216.73.217.62",
   "address_source": "CF-Connecting-IP",
   "declared_operator_url": null,
   "declared_contact_email": "+claudebot@anthropic.com",
   "marked_as_ours": false
  },
  "we_book_you_as": {
   "class": "crawler",
   "decided_on": "your user-agent alone",
   "classifier": "v5 (2026-09-02): v4 + ONE source of truth (this file) + googleother and Google's non-bot fetchers + ecosyste.ms",
   "caveat": "The full rule also reads the path you asked for and your Accept header (src/classify.js, the same list collector.py compiles), so a request for a machine path with no user-agent books differently from this. Only the user-agent part is reported here, because it is the part that is the same whichever door you came through.",
   "classes": [
    "agent",
    "crawler",
    "human",
    "unknown"
   ]
  },
  "we_have_seen_you": {
   "seen_before": true,
   "how_matched": "your exact user-agent string",
   "slug": "claudebot",
   "name": "ClaudeBot",
   "kind": "named",
   "requests": 1221,
   "addresses": 4,
   "first_seen": "2026-09-01T00:46:32+00:00",
   "last_seen": "2026-09-02T06:04:46+00:00",
   "distinct_paths": 781,
   "classed_by_our_instrument": {
    "agent": 917,
    "crawler": 304
   },
   "status_codes": {
    "200": 1220,
    "404": 1
   },
   "surfaces": {
    "pathwren-edge": 1212,
    "a2a-crawler-index": 9
   },
   "channels": {
    "a2a-directory": 6,
    "mcp-registry-official": 5,
    "direct": 1,
    "pypi-registry": 1,
    "mcpservers-org": 1
   },
   "most_fetched_paths": [
    {
     "path": "/px.gif",
     "requests": 345,
     "statuses": {
      "200": 345
     }
    },
    {
     "path": "/robots.txt",
     "requests": 20,
     "statuses": {
      "200": 20
     }
    },
    {
     "path": "/sitemap.xml",
     "requests": 17,
     "statuses": {
      "200": 17
     }
    },
    {
     "path": "/",
     "requests": 2,
     "statuses": {
      "200": 2
     }
    },
    {
     "path": "/category/ai-training.json",
     "requests": 2,
     "statuses": {
      "200": 2
     }
    },
    {
     "path": "/category/preview.json",
     "requests": 2,
     "statuses": {
      "200": 2
     }
    },
    {
     "path": "/category/user-fetch.json",
     "requests": 2,
     "statuses": {
      "200": 2
     }
    },
    {
     "path": "/crawler/ai2bot.md",
     "requests": 2,
     "statuses": {
      "200": 2
     }
    }
   ],
   "your_dossier": "https://www.pathwren.workers.dev/bot/claudebot.html",
   "your_dossier_json": "https://www.pathwren.workers.dev/bot/claudebot.json",
   "window": {
    "first_request": "2026-08-31T20:58:11+00:00",
    "last_request": "2026-09-02T06:20:28+00:00",
    "hours": 33.4
   }
  },
  "the_index_on_your_user_agent": {
   "user_agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
   "matched": true,
   "matched_on": "ClaudeBot",
   "crawler": {
    "slug": "claudebot",
    "name": "ClaudeBot",
    "operator": "Anthropic",
    "operator_slug": "anthropic",
    "category": "ai-training",
    "category_label": "AI training crawlers",
    "robots_token": "ClaudeBot",
    "user_agent_substring": "ClaudeBot",
    "user_agent_example": "Mozilla/5.0 (compatible; ClaudeBot/1.0; +claudebot@anthropic.com)",
    "respects_robots_txt": "documented",
    "respects_robots_txt_label": "obeys robots.txt (documented)",
    "verification_method": "none",
    "verification_label": "no published verification method",
    "published_ip_ranges_url": null,
    "ip_ranges_endpoint": null,
    "ipv4_prefix_count": 0,
    "ipv6_prefix_count": 0,
    "what_it_is": "Anthropic's bulk crawler, gathering pages that may be used to train Claude models.",
    "cost_of_blocking": "Content excluded from training data for future Claude models. No effect on Claude's ability to fetch a link a user gives it.",
    "operator_docs": "https://support.anthropic.com/en/articles/8896518",
    "docs_url": "https://www.pathwren.workers.dev/crawler/claudebot.html",
    "json_url": "https://www.pathwren.workers.dev/crawler/claudebot.json",
    "last_reviewed": "2026-09-02"
   },
   "also_matched": [],
   "verification": {
    "method": "none",
    "label": "no published verification method",
    "published_ip_ranges": null,
    "how": "The operator publishes no verification method at all, so this user-agent cannot be verified. Treat it as unverifiable."
   },
   "caveat": "A user-agent string is a claim, not a proof: anyone can send it. Before you act on a match, check the address with is_verified_crawler_ip, or use the operator's reverse-DNS method where there are no published ranges.",
   "source": "https://www.pathwren.workers.dev"
  },
  "your_address_against_the_published_ranges": {
   "ip": "216.73.217.62",
   "ip_version": 4,
   "in_a_published_range": false,
   "matches": [],
   "checked_against": {
    "sources": 15,
    "ipv4_prefixes": 1984,
    "ipv6_prefixes": 1062,
    "mirrored_at": "2026-09-02T02:40:37+00:00",
    "endpoint": "https://www.pathwren.workers.dev/ip-ranges/all.json"
   },
   "means": "The address is not in any prefix mirrored here. That is not proof of a fake: only 36 of the 150 indexed crawlers publish ranges at all, 24 verify by reverse DNS instead, and the rest publish no verification method. Check the crawler's verification_method with lookup_crawler.",
   "caveat": "Union of every operator-published prefix list mirrored by this index. Presence here means an operator publishes the prefix for one of its crawlers; it does not mean the traffic is welcome or unwelcome."
  },
  "answered_by": {
   "server": "ai-crawler-index",
   "endpoint": "https://www.pathwren.workers.dev/mcp",
   "tool": "whoami",
   "takes_arguments": false
  },
  "this_call_touched": {
   "third_parties": 0,
   "dns_lookups": 0,
   "files_read": [
    "/data/observed-clients.json",
    "/data/agents.json",
    "/ip-ranges/all.json"
   ],
   "note": "Read from this host's own published files through the assets binding. No socket left the edge."
  },
  "caveats": [
   "A user-agent is a claim, never a proof. Everything above that starts from your user-agent inherits that.",
   "Your address is read from the CF-Connecting-IP header this host receives; if you are behind a proxy of your own, that is the proxy.",
   "Nothing here was fetched: no DNS lookup, no request to you, no request to anyone. Every fact comes from the headers you sent or from a file this host already publishes.",
   "We store what any web server stores — one row per request. The published aggregate is at https://www.pathwren.workers.dev/data/observed-clients.json, CC0, and your row is in it."
  ],
  "license": "CC0-1.0",
  "independent": true
 },
 "answered_by": {
  "note": "The MCP tool itself answered this. One implementation, two doors — this endpoint holds no copy of it.",
  "server": "ai-crawler-index",
  "endpoint": "https://www.pathwren.workers.dev/mcp",
  "tool": "whoami",
  "protocol": "MCP streamable-http, JSON-RPC 2.0 tools/call"
 },
 "caveats": [
  "The answer depends on your request headers, so it is not cached and carries no ETag comparison across callers.",
  "Nothing is stored. The published file it reads, /data/observed-clients.json, is built from this host's own access log and is already public.",
  "The same answer over MCP: tools/call whoami with arguments {} on any of the five servers here."
 ],
 "docs": "https://www.pathwren.workers.dev/tools/whoami.html?s=client-dossiers",
 "catalogue": "https://www.pathwren.workers.dev/tools/index.json?s=client-dossiers",
 "more": {
  "who actually crawls this host": "https://www.pathwren.workers.dev/bot/index.html?s=client-dossiers",
  "every named client as one file": "https://www.pathwren.workers.dev/data/observed-clients.json?s=client-dossiers"
 },
 "auth": "none — no account, no key, no handshake. CORS open, cacheable, CC0-1.0.",
 "license": "CC0-1.0",
 "independent": true
}