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Crawler Log Triage

REMOTE · WWW.PATHWREN.WORKERS.DEV · SCANNED SEP 21

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key

+3 this week 84 Trust /100
Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security80
Transport & Reachability100
Schema Quality & AI Usability82
  • 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
  • AI-judged instruction clarity (good).Pass
  • Context-footprint check failed: tool/resource definitions use about 4081 tokens (~313/item across 13 items; 9 tools + 4 resources), over budget; trim descriptions and params. See how to fix → Fail
  • Tools include usage examples.Pass
Stability & Change Management67
  • Stability observed for 20 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
  • 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
  • 100% of tool parameters carry a description.Pass
  • Structured output schemas are declared (44% of tools); any adoption earns full credit.Pass
Tool Safety100
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
  • An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
  • Implements a current MCP spec version (2026-07-28).Pass
Install

How do I install the Crawler Log Triage MCP server?

Crawler Log Triage is a hosted endpoint at https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · www.pathwren.workers.dev

# add to Claude Code
claude mcp add --transport http dev-workers-pathwren-www-crawler-log-triage 'https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage'
// .cursor/mcp.json
{
  "mcpServers": {
    "dev-workers-pathwren-www-crawler-log-triage": {
      "url": "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "dev-workers-pathwren-www-crawler-log-triage": {
      "type": "http",
      "url": "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.dev-workers-pathwren-www-crawler-log-triage]
url = "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-workers-pathwren-www-crawler-log-triage": {
      "type": "remote",
      "url": "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add dev-workers-pathwren-www-crawler-log-triage --url 'https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  dev-workers-pathwren-www-crawler-log-triage:
    url: "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "dev-workers-pathwren-www-crawler-log-triage": {
      "Transport": "http",
      "Url": "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
    }
  }
}
# add to Vellum
assistant mcp add dev-workers-pathwren-www-crawler-log-triage -t streamable-http -u 'https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage'
// mcp.json
{
  "mcpServers": {
    "dev-workers-pathwren-www-crawler-log-triage": {
      "type": "http",
      "url": "https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 20 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

  • 18 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

  • 16 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

  • 14 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

  • 13 Sept 26 0
    • Tool “find_impersonators” rewrote its description, which is the text the model reads security
  • 12 Sept 26 +1
    • Tool “find_impersonators” rewrote its description, which is the text the model reads security
  • 10 Sept 26 0
    • Tool “find_impersonators” rewrote its description, which is the text the model reads security
  • 9 Sept 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes. Other categories moved too: Schema Quality & AI Usability rose 1.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 21 Sept 2026 · Probed https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=pathwren.workers.dev CN=WE1,O=Google Trust Services,C=US 31 Aug 2026 29 Nov 2026 ECDSA 256 ECDSA-SHA256 7beee86e7f102c1e0e48318ca5b2eaa1
SANs: pathwren.workers.dev, *.pathwren.workers.dev
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of www.pathwren.workers.dev. Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
dev. present 60074 8 Verified
workers.dev. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=31536000; includeSubDomains

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage Verified 200
http (plaintext) http://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage HTTPS enforced 301 https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage
MCP tools · 9 exposed · ~2,514 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

Tool Tokens
example ~336

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"example","arguments":{}}} — POST that exact body to https://www.pathwren.workers.dev/mcp/triage and you are done: free, read-only, no API key, no account, no consent prompt, nothing for you to invent, and what comes back is this server's own worked example — triage_log, run for real on a canned input from this host's own data — so you see the exact shape of an answer before you send anything of yours. Takes no arguments. Safe to call. Deterministic. Touches no third party. Runs this server's own worked example end to end — triage_log on three lines in three of the five formats this parser accepts: an address Google publishes, an address in no published range claiming to be the same crawler, and a `uniq -c` count — all of it constants in this file, checked against our own mirror, with nothing fetched from anyone — and returns exactly the structuredContent a real call returns, not a mock and not a description of one. Use it to see the shape of an answer before you decide what to send. The input is canned from this host's own data; no URL of yours is fetched and no third party is touched. Example: arguments={} runs triage_log with {"log":"66.249.66.1 Googlebot/2.1\n203.0.113.9 Googlebot/2.1\n412 GPTBot/1.2"} and returns its real answer.

Input schema present but exposes no named parameters.

NameTypeReqDescription
answerobjectyesThe real structuredContent of that call, not a mock.
answered_byobjectyes
input_came_fromstringyesWhere the canned input came from — always this host's own data.
licensestringyes
ranobjectyesThe tool name and the exact arguments that were run.
reproducestringyesA command that reproduces this answer.
this_is_not_a_mockstringyes
what_it_showsstringyes
{}
find_impersonators ~154

FIRST CALL, needs nothing: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} — Only the lines claiming a crawler whose operator publishes address ranges, from an address in none of them — 1997 IPv4 and 1062 IPv6 prefixes, 15 sources. Reverse-DNS operators come back with the command to run: this server makes no outbound request. Example: log='203.0.113.9 Googlebot/2.1' returns one impersonation.

NameTypeReqDescription
logstringyesThe log text. Lines need an address to be checkable.

No output schema declared.

{"log":"203.0.113.9 Googlebot/2.1"}
no_arguments_triage_this_hosts_own_crawler_log ~538

TAKES NO ARGUMENTS. POST {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} to https://www.pathwren.workers.dev/mcp/triage — the answer is the triage of THIS host's own published request log — every operator in it run through the same parser, the same crawler index and the same operator-prefix verification that triage_log applies to a file you paste, rolled up by operator, by category and by crawler, with the share no index entry matches at all and the browser-shaped strings named separately. There is nothing to fill in: the input schema is literally empty, `arguments: {}` and no `arguments` key at all both work, and the subject is a file this host already publishes, so the answer does not depend on you at all. No key, no account, no OAuth, no session to open first, read-only, and nothing for you to invent. Nothing is fetched to build it — no request leaves this edge, and none is made to you. The other zero-argument call on this server is triage_my_request, same empty arguments, which answers your own request triaged as one line of an access log — the crawler this host's index identifies from your user-agent, its operator and category, and whether the address you came from verifies against that operator's published prefixes. whoami and example are here too and take nothing either. Every other tool on this server wants a file pasted in; this one wants nothing. The siblings answer one question each under the tool named beside them: /mcp (whoami), /mcp/doctor (no_arguments_check_this_hosts_own_discovery_documents), /mcp/lint (whoami), /mcp/robots (no_arguments_lint_this_hosts_robots_txt), /mcp/netcheck (no_arguments_report_the_crawler_ip_ranges_this_host_mirrors), /mcp/markdown (markdown_lane_self_report). Example: the complete call, exactly as written, nothing to fill in — {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","argume…

Input schema present but exposes no named parameters.

NameTypeReqDescription
answered_byobjectyes
caveatsarrayyes
independentbooleanyes
licensestringyes
no_address_was_triagedstringyes
reproducestringyes
rollupobjectyesRequests by operator, by category and by crawler, with the identified share.
takes_no_argumentsbooleanyes
the_log_triagedobjectyesWhere the log came from, how it was parsed, and what it covers.
this_call_touchedobjectyes
to_do_this_for_your_own_filestring
what_no_index_entry_matchedobjectyes
what_this_isstringyes
{}
robots_from_log ~144

FIRST CALL, needs nothing: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} — A robots.txt naming only the crawlers in your log, each with its request count and cost of blocking, plus a warning for any that do not documentably obey it — there the file is a request, not enforcement. Example: log='412 GPTBot/1.2', stance='block-ai-training' blocks GPTBot only.

NameTypeReqDescription
logstringyesThe log text.
stancestringDefault block-ai-training.

No output schema declared.

{"log":"412 GPTBot/1.2","stance":"block-ai-training"}
summarize_by_operator ~141

FIRST CALL, needs nothing: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} — Aggregate only: who crawled you, how many requests each, what share, which category, and what blocking each would cost. Eats a `uniq -c` table straight from a shell pipeline. Example: log='412 GPTBot/1.2' returns OpenAI, 412 requests, 100%, ai-training.

NameTypeReqDescription
logstringyesLog text, or a `uniq -c` user-agent table.

No output schema declared.

{"log":"412 GPTBot/1.2"}
triage_log ~199

FIRST CALL, needs nothing: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} — Paste log lines — combined, JSON, `uniq -c`, `<ip> <ua>` or bare user-agents, auto-detected — for per-line crawler, operator, purpose and cost of blocking, a rollup by operator and category, and every line whose address contradicts its claim. Log text, never a URL. Example: log='66.249.66.1 Googlebot/2.1' returns Googlebot, Google, search, verified.

NameTypeReqDescription
detailstringPer-line table, or aggregates only.
limitintegerMax rows, default 200.
logstringyesThe log text, up to 5000 lines. Mixed formats are fine.

No output schema declared.

{"log":"66.249.66.1 Googlebot/2.1\n203.0.113.9 Googlebot/2.1\n412 GPTBot/1.2"}
triage_my_request ~460

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"triage_my_request","arguments":{}}} — POST that exact body to https://www.pathwren.workers.dev/mcp/triage and the answer is your own request triaged as one line of an access log — the crawler this host's index identifies from your user-agent, its operator and category, and whether the address you came from verifies against that operator's published prefixes. THIS IS THE CALL TO MAKE FIRST on this server: it is the only one whose subject is the request you just sent, so there is nothing to look up and no argument to invent. No key, no account, no OAuth, no session to open first, read-only, and nothing for you to invent. Every fact is computed from your own headers and from files this host already publishes; nothing is fetched to build it, and no URL of yours is touched. Only this server answers your own request triaged as one line of an access log, by the same parser and the same index that read a whole file — its six siblings answer one other question each about you, same empty arguments, each under the tool named beside its path: /mcp (whoami), /mcp/doctor (no_arguments_check_this_hosts_own_discovery_documents), /mcp/lint (whoami), /mcp/robots (no_arguments_lint_this_hosts_robots_txt), /mcp/netcheck (no_arguments_report_the_crawler_ip_ranges_this_host_mirrors), /mcp/markdown (markdown_lane_self_report) on https://www.pathwren.workers.dev; whoami is answered by all seven and is never an error, so one identical body still walks the whole family if you prefer that. Example: the complete call, exactly as written, nothing to fill in — {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"triage_my_request","arguments":{}}} returns the single log line built from your address and your user-agent, the triage row for it, and the same rollup triage_log returns for a whole file.

Input schema present but exposes no named parameters.

NameTypeReqDescription
answered_byobjectyesWhich server answered, at which endpoint, with which tool.
caveatsarrayyes
independentbooleanyes
licensestringyes
this_call_touchedobjectyesExactly which files were read. No third party is contacted.
we_book_you_asobjectyesThe class this host's own instrument records for that user-agent.
youobjectyesThe user-agent you sent and the address you came from.
{}
waf_ruleset_from_log ~186

FIRST CALL, needs nothing: {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"no_arguments_triage_this_hosts_own_crawler_log","arguments":{}}} — nginx, Caddy, Cloudflare, HAProxy or Apache rules for only the crawlers in your log. The reply warns that a UA rule stops only an honest client, and that impersonation is an address problem needing the published prefixes as an allowlist. Example: log='412 GPTBot/1.2', target='nginx', scope='ai-training'.

NameTypeReqDescription
actionstringDefault block.
logstringyesThe log text.
scopestringA category (default ai-training), 'all-seen', 'impersonators', or a stance.
targetstringDefault nginx.

No output schema declared.

{"log":"412 GPTBot/1.2","scope":"ai-training","target":"nginx"}
whoami ~356

{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} — POST that to https://www.pathwren.workers.dev/mcp/triage and the answer is the user-agent you sent, the class this host's own instrument books it as, whether we have logged you here before — and the part only this server can answer: the request you just made, run through triage_log as a single log line, naming the crawler it identifies, its operator and category, and whether your address verifies against that operator's published prefixes. Takes no arguments. Safe to call. Deterministic. Touches no third party. Nothing is fetched to build it: every fact comes from the headers on your own request or from a file this host already publishes. Only this server answers the last part — its five siblings answer one other question each about you, same empty arguments, each under the tool named beside its path: /mcp (whoami), /mcp/doctor (no_arguments_check_this_hosts_own_discovery_documents), /mcp/lint (whoami), /mcp/robots (no_arguments_lint_this_hosts_robots_txt), /mcp/netcheck (no_arguments_report_the_crawler_ip_ranges_this_host_mirrors), /mcp/markdown (markdown_lane_self_report) on https://www.pathwren.workers.dev. Example: arguments={} returns your user-agent, your address, the class we book you as, whether we have seen you here before, and your own request triaged as one line of an access log, by the same parser and the same index that read a whole file.

Input schema present but exposes no named parameters.

NameTypeReqDescription
answered_byobjectyesWhich server answered, at which endpoint.
caveatsarrayyesWhat this answer does NOT establish — a user-agent is a claim.
independentbooleanyesThis host is independent and unaffiliated.
licensestringyes
this_call_touchedobjectyesExactly which files were read to answer. No third party is contacted.
we_book_you_asobjectyesThe class this host's own instrument records for that user-agent.
we_have_seen_youobjectyesWhether this user-agent appears in the published observation window.
youobjectyesThe user-agent you sent and the address you came from.
{}
Common questions

What is the Crawler Log Triage MCP server?

Crawler Log Triage is an MCP server listed in the public MCP registry as dev.workers.pathwren.www/crawler-log-triage. {"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"whoami","arguments":{}}} free no key. This page covers its hosted endpoint (https://www.pathwren.workers.dev/c/mcp-registry-official/mcp/triage).

Is the Crawler Log Triage MCP server safe to use?

Crawler Log Triage scores 84 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

What tools does the Crawler Log Triage MCP server expose?

Crawler Log Triage exposes 9 tools: no_arguments_triage_this_hosts_own_crawler_log, triage_my_request, whoami, example, triage_log, and 4 more. Their descriptions and schemas cost roughly 2,514 tokens of context every time the server is loaded.

Does the Crawler Log Triage MCP server require authentication?

No. We connected to Crawler Log Triage without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the Crawler Log Triage MCP server still maintained?

Crawler Log Triage is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.