{
 "name": "MCP server — Crawler Log Triage",
 "what": "Paste raw access-log lines into an MCP tool: every crawler identified and attributed, the impersonators named against operator-published IP ranges, and robots.txt or WAF rules for exactly what you saw. Streamable HTTP at /mcp/triage, no key, no signup.",
 "url": "https://www.pathwren.workers.dev/mcp-triage.json",
 "twin_of": "https://www.pathwren.workers.dev/mcp-triage.html",
 "page": {
  "path": "/mcp-triage.html",
  "url": "https://www.pathwren.workers.dev/mcp-triage.html",
  "type": "text/html"
 },
 "generated_at": "2026-09-03T07:55:35+00:00",
 "generated_from": "the bytes of /mcp-triage.html, by surfaces/ai-crawler-index/build.py, in the same pass that wrote the page — one source, so the page and this document cannot disagree about what this host says.",
 "license": {
  "document": "CC0-1.0",
  "url": "https://creativecommons.org/publicdomain/zero/1.0/"
 },
 "access": {
  "api_key": "none",
  "account": "none",
  "rate_limit": "none",
  "cors": "*",
  "auth": "none — every document here is a public GET"
 },
 "commands": [
  "# three lines of a log, one call, no account",
  "curl -s https://www.pathwren.workers.dev/mcp/triage \\",
  "  -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \\",
  "  -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"tools/call\",\"params\":{\"name\":\"triage_log\",",
  "       \"arguments\":{\"log\":\"66.249.66.1 Googlebot/2.1\\n203.0.113.9 Googlebot/2.1\\n412 GPTBot/1.2\"}}}' \\",
  "  | jq -r '.result.structuredContent.rows[] | \"\\(.identified)\\t\\(.operator)\\t\\(.verdict)\"'",
  "Googlebot\tGoogle\tverified",
  "Googlebot\tGoogle\timpersonation",
  "GPTBot\tOpenAI\tunverifiable",
  "curl -s https://www.pathwren.workers.dev/mcp/triage \\",
  "  -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \\",
  "  -d \"$(jq -Rs '{jsonrpc:\"2.0\",id:1,method:\"tools/call\",",
  "       params:{name:\"summarize_by_operator\",arguments:{log:.}}}' < access.log)\" \\",
  "  | jq -r '.result.structuredContent.by_operator[] | \"\\(.requests)\\t\\(.operator)\\t\\(.share_pct)%\"'",
  "claude mcp add --transport http crawler-log-triage https://www.pathwren.workers.dev/mcp/triage",
  "{",
  " \"mcpServers\": {",
  "  \"crawler-log-triage\": { \"type\": \"streamable-http\", \"url\": \"https://www.pathwren.workers.dev/mcp/triage\" }",
  " }",
  "}"
 ],
 "sections": [
  {
   "heading": "Crawler Log Triage — MCP server",
   "text": [
    "Paste your access log. Get back what is crawling you, who runs it, what it costs to block, and which lines are lying about who they are. Streamable HTTP, stateless, no key, no signup. Every tool is read-only.",
    "With a real file, the shape you actually want:"
   ],
   "commands": [
    "# three lines of a log, one call, no account",
    "curl -s https://www.pathwren.workers.dev/mcp/triage \\",
    "  -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \\",
    "  -d '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"tools/call\",\"params\":{\"name\":\"triage_log\",",
    "       \"arguments\":{\"log\":\"66.249.66.1 Googlebot/2.1\\n203.0.113.9 Googlebot/2.1\\n412 GPTBot/1.2\"}}}' \\",
    "  | jq -r '.result.structuredContent.rows[] | \"\\(.identified)\\t\\(.operator)\\t\\(.verdict)\"'",
    "Googlebot\tGoogle\tverified",
    "Googlebot\tGoogle\timpersonation",
    "GPTBot\tOpenAI\tunverifiable",
    "curl -s https://www.pathwren.workers.dev/mcp/triage \\",
    "  -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \\",
    "  -d \"$(jq -Rs '{jsonrpc:\"2.0\",id:1,method:\"tools/call\",",
    "       params:{name:\"summarize_by_operator\",arguments:{log:.}}}' < access.log)\" \\",
    "  | jq -r '.result.structuredContent.by_operator[] | \"\\(.requests)\\t\\(.operator)\\t\\(.share_pct)%\"'"
   ],
   "tables": [],
   "links": []
  },
  {
   "heading": "Add it to a client",
   "text": [
    "Clients that take a JSON config (Claude Desktop, Cursor, VS Code, Windsurf):"
   ],
   "commands": [
    "claude mcp add --transport http crawler-log-triage https://www.pathwren.workers.dev/mcp/triage",
    "{",
    " \"mcpServers\": {",
    "  \"crawler-log-triage\": { \"type\": \"streamable-http\", \"url\": \"https://www.pathwren.workers.dev/mcp/triage\" }",
    " }",
    "}"
   ],
   "tables": [],
   "links": []
  },
  {
   "heading": "Tools",
   "text": [],
   "commands": [],
   "tables": [
    {
     "headers": [
      "Tool",
      "What it answers"
     ],
     "rows": [
      [
       "triage_log",
       "The whole job. Per line: which crawler, whose, what for, what blocking costs — plus a rollup by operator and category and every line whose address contradicts its claim."
      ],
      [
       "find_impersonators",
       "Only the lines claiming a crawler whose operator publishes ranges, from an address in none of them. Checked against 1984 IPv4 and 1062 IPv6 prefixes from 15 operator sources."
      ],
      [
       "summarize_by_operator",
       "Aggregate only: who crawled you, how many requests, what share, which category, what blocking each would cost. Eats a uniq -c table straight from a shell pipeline."
      ],
      [
       "robots_from_log",
       "A robots.txt naming only the crawlers your log actually contains — not a generic list of everything that exists — with a warning for any that do not documentably obey it."
      ],
      [
       "waf_ruleset_from_log",
       "nginx, Caddy, Cloudflare, HAProxy or Apache rules for the same set. The enforcement half, for the crawlers that ignore robots.txt."
      ]
     ]
    }
   ],
   "links": []
  },
  {
   "heading": "What it eats",
   "text": [
    "Formats are detected per line, so a messy paste is fine and a mixed file is fine:",
    "The usual way to produce the third one: awk -F'\"' '{print $6}' access.log | sort | uniq -c | sort -rn | head -50"
   ],
   "commands": [],
   "tables": [
    {
     "headers": [
      "Shape",
      "Example"
     ],
     "rows": [
      [
       "combined / common",
       "66.249.66.1 - - [01/Sep/2026:00:14:02 +0000] \"GET / HTTP/1.1\" 200 512 \"-\" \"…Googlebot/2.1…\""
      ],
      [
       "JSON lines",
       "{\"remote_addr\":\"66.249.66.1\",\"http_user_agent\":\"…Googlebot/2.1…\"}"
      ],
      [
       "uniq -c table",
       "412 Mozilla/5.0 … GPTBot/1.2 … — the count is respected, so 412 lines cost you one"
      ],
      [
       "ip + user-agent",
       "66.249.66.1 Googlebot/2.1"
      ],
      [
       "bare user-agent",
       "Mozilla/5.0 (compatible; ClaudeBot/1.0; …)"
      ]
     ]
    }
   ],
   "links": []
  },
  {
   "heading": "How is this different from /mcp?",
   "text": [
    "ai-crawler-index answers questions about one thing — this user-agent, this IP, this crawler, this stance. It is a reference. This server does not answer questions about crawlers at all: it takes your evidence, a log you already have, and gives back a decision about it. One call in, per-line verdicts plus a rollup plus a config out. Different input, different unit of work, no tool in common — same index underneath, so the two agree by construction. Run both."
   ],
   "commands": [],
   "tables": [],
   "links": [
    "/mcp.html"
   ]
  },
  {
   "heading": "What it will not do",
   "text": [
    "It has no side effects and no write path. It has no tool that fetches a URL, and no tool that takes one — it works on text you paste, and nothing else. That is deliberate: a log-analysis tool that will fetch an arbitrary URL for whoever is talking to it is an SSRF proxy with a friendly description, so this one cannot be asked.",
    "Operators who verify by reverse DNS (24 of them, including Bing, Apple and DuckDuckGo) cannot be checked without a lookup, so instead of doing one it hands you the exact dig command and says the result is unknown until you run it. A user-agent is a claim, not a proof; every answer says which of the two you are holding.",
    "Protocol versions 2025-06-18, negotiated per call. server/discover answers for clients on 2026-07-28, initialize for everyone else. Same index as /data/agents.json, refreshed every six hours. Listed in the official MCP Registry as dev.workers.pathwren.www/crawler-log-triage."
   ],
   "commands": [],
   "tables": [],
   "links": [
    "/data/agents.json",
    "https://registry.modelcontextprotocol.io/v0/servers?search=crawler-log-triage"
   ]
  }
 ],
 "machine_doors": [
  {
   "url": "https://www.pathwren.workers.dev/tools/?s=client-dossiers",
   "name": "6 keyless GET tools",
   "what": "The read-only MCP tools of this host as plain GET endpoints — no JSON-RPC, no key"
  },
  {
   "url": "https://www.pathwren.workers.dev/documents.json",
   "name": "documents.json",
   "what": "Every document here with its strong ETag and the date its bytes changed"
  },
  {
   "url": "https://www.pathwren.workers.dev/changes",
   "name": "changes",
   "what": "What moved since your cursor — poll this instead of re-downloading anything"
  },
  {
   "url": "https://www.pathwren.workers.dev/llms.txt",
   "name": "llms.txt",
   "what": "The whole map in one text file"
  },
  {
   "url": "https://www.pathwren.workers.dev/openapi.json",
   "name": "openapi.json",
   "what": "Every read endpoint, described formally"
  },
  {
   "url": "https://www.pathwren.workers.dev/.well-known/agent-card.json",
   "name": "agent card",
   "what": "A2A agent card"
  },
  {
   "url": "https://www.pathwren.workers.dev/mcp",
   "name": "mcp",
   "what": "MCP over JSON-RPC (POST)"
  },
  {
   "url": "https://www.pathwren.workers.dev/a2a",
   "name": "a2a",
   "what": "A2A (POST message/send)"
  }
 ],
 "links": [
  {
   "rel": "self",
   "href": "https://www.pathwren.workers.dev/mcp-triage.json",
   "type": "application/json"
  },
  {
   "rel": "describes",
   "href": "https://www.pathwren.workers.dev/mcp-triage.html",
   "type": "text/html",
   "title": "The page this document is the JSON twin of: MCP server — Crawler Log Triage"
  },
  {
   "rel": "changes",
   "href": "https://www.pathwren.workers.dev/changes.json?since=111",
   "type": "application/json",
   "title": "What changed since your cursor — poll this instead of re-downloading this document",
   "cursor_param": "since",
   "head_cursor": 111,
   "min_poll_seconds": 21600,
   "how": "Read `cursor` from the response and send it back as `since`. It advances only when something really changed, so an unchanged answer is proof rather than luck — about 2.5 KB, or a 304 with no body if you send back the ETag."
  },
  {
   "rel": "related",
   "href": "https://www.pathwren.workers.dev/documents.json",
   "type": "application/json",
   "title": "Every document here with its ETag and last-modified date"
  },
  {
   "rel": "related",
   "href": "https://www.pathwren.workers.dev/data/agents.json",
   "type": "application/json",
   "title": "Every crawler record in one file"
  },
  {
   "rel": "service-desc",
   "href": "https://www.pathwren.workers.dev/openapi.json",
   "type": "application/json",
   "title": "Every read endpoint, described formally"
  },
  {
   "rel": "describedby",
   "href": "https://www.pathwren.workers.dev/llms.txt",
   "type": "text/plain",
   "title": "The whole map in one text file"
  }
 ]
}