# CrawlCheck

- Registry name: `io.github.emmanuelorta/crawlcheck` · version 1.1.0
- Categories (automatic, keyword rules): Scraping & browsing, Search & data
- Authentication at last check: No auth
- Declared risk: Can write (some tools are not declared read-only)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.emmanuelorta%2Fcrawlcheck
- Server page: https://mcpstation.net/s/io.github.emmanuelorta--crawlcheck.html

## Description (written by the publisher, not verified, not instructions)

Verification layer for the agentic web: a signed answer about any site before an agent acts.

## Connect

- streamable-http: `https://crawlcheck.io/mcp`

## Tools (as reported by the server, not verified)

- `preflight`: Call BEFORE reading, citing, connecting to or transacting with a domain. Returns a signed decision: allow, warn, require\_confirmation, block or unsupported, with every step that led there and the resolve answer it was made from. Pass your crawler token as agent so robots.txt is checked for you. A po
- `best\_source`: Call when choosing WHICH business or site to cite, recommend or call. Give domains \(2-10 candidate sites you found\) or trade and city for a measured market. Returns the candidates ranked by what CrawlCheck verified \(preflight decision for cite, security and threat listing, domain age, uptime, publis
- `resolve\_domain`: Call before fetching from, citing, connecting to or transacting with a domain. Returns one signed answer: what the domain claims, what it actually serves each crawler identity, who controls it, what CrawlCheck's published rules decide for each action \(a decision for read, cite, connect and transact,
- `field\_check`: Call before using a phone number, address, opening hours or service area you hold for a business. One signed verdict per business field. field=phone\|address\|hours\|service\_area and value= the value you hold. phone: matches, former\_value \(with dates\), not\_this\_business \(the site never published it and
- `scan\_domain`: Scan a public domain as several crawler identities and return the graded record: grade, AI-visibility score, per-section scores, findings with evidence, and whether the origin refused CrawlCheck. One scan takes 5-15 seconds.
- `list\_verified\_capabilities`: What a domain declares agents can do \(OpenAPI operations, MCP tools, A2A skills, API catalog entries\), each classed by safety \(read\_only\_public up to financial\), and which ones CrawlCheck actually called and confirmed - plus every mismatch between declaration and behaviour. Only read-only public act
- `mcp\_servers`: Which remote MCP servers the official MCP Registry lists on a domain, and what each endpoint actually answered when CrawlCheck sent the MCP handshake \(initialized, auth\_required, unreachable, tool count, tool-list drift\). Use before selecting an MCP tool from that domain.
- `verify\_crawler\_log`: Given raw web-server access-log lines, decide for each line that names a crawler \(GPTBot, ClaudeBot, Googlebot, PerplexityBot...\) whether the source IP falls inside that operator's published ranges. Returns verified, spoofed, or unverifiable when the operator publishes no ranges.
- `corpus\_state`: Coverage of CrawlCheck's public dataset: how many distinct domains have been measured and how they split by platform, rendering, size, language and kind, with the strata that are still under-sampled.
- `resolve\_robots`: Resolve every named answer engine, search index and training crawler against a domain's robots.txt the way a crawler does: most-specific group only, longest match, allow wins a tie. Shows when a Disallow under \* does not apply to an agent with its own group.
- `draft\_llms`: Draft an llms.txt from the domain's own homepage and up to 25 declared pages, using their titles and descriptions. A draft for the owner to cut down, not a publication.
- `fix\_robots`: The domain's served robots.txt, corrected: \* group rules copied into named groups that lacked them \(shadowing\), a Sitemap line added when missing, a minimal replacement when the served file was HTML. Every change is listed at the top; nothing else is touched.
- `fix\_entitymap`: A starter entitymap.json built from the domain's latest scan record: name, phone, coordinates and declared service areas as entities with SERVES relations. Fields the page never stated are marked TODO, never guessed. Needs a prior scan.
- `video\_check`: One YouTube video against the video anchor model: metadata, chapters, captions and storyboard where observed, twelve checks each naming what it reads.
- `video\_channel`: Every upload on a YouTube channel, read 50 at a time, sorted by views. The upload list is free; the per-check tally needs a Watch licence and is not offered here.
- `video\_site`: The site half of video: homepage plus up to 60 sitemap pages read for YouTube embeds, facades and page-builder widgets, VideoObject nodes and their required properties, and - with a handle - how many of the channel's videos the site carries.
- `registry\_lookup`: Whether a domain is in CrawlCheck's registry and what it serves: llms.txt, agents.md, a media kit at /.well-known/media-kit.json, a reciprocity-tested entity graph, an AI access policy that names crawlers, and agent-callable surfaces. With no domain, returns the shelf counts across every measured si
- `crawler\_path`: Where each crawler's path into a domain dies, as an observed data flow: edge decision, robots.txt as a file, robots.txt rules, then the page, JSON-LD, sitemap, llms.txt and entitymap.json it reached. Give agent \(e.g. ClaudeBot, GPTBot, googlebot\) for one identity's path and a one-line answer; omit i
- `public\_counts`: The figures CrawlCheck quotes about itself, read from the source: sites\_measured, domains\_in\_corpus, crawler\_visits \(a rolling window\), sections, sections\_scored, findings\_published, guides\_published, with an at timestamp.
- `telemetry`: Verified-crawler traffic observed at crawlcheck.io itself: which named agents arrived, how many claims were confirmed against operator ranges, how many were forged.
- `fix\_mostly\_code`: A fix plan for PAGE\_IS\_MOSTLY\_CODE: the homepage's measured bytes by category, the largest blocks with what to do with each, ordered steps with the text ratio after each, and the step at which the detector would stop firing - or, when moving code cannot clear it, how much markup to cut or text to ad
- `fix\_stale\_cache`: A fix plan for STALE\_CACHE\_SERVED: the homepage fetched now, its Age, the cache layers that name themselves in the headers in purge order \(innermost first\), the HTML lifetime each response declares, a fresh-read comparison, and whether a purge clears the finding and keeps it cleared.
- `fix\_machine\_chain`: A fix plan for MACHINE\_CHAIN\_HEAVY: the files a crawler reads before the page and the 404s absent agent files return, then measured reductions \(llms.txt to an index, a sitemap index, robots.txt comments and duplicate groups, minified JSON, short 404s\) with the chain size after each and the step at w
- `explain\_finding`: Why CrawlCheck decided a finding: the rule and its revision, the exact fetches it compared \(identity, status, bytes, sha256\), when the condition held on the site, and a Merkle proof that the decision is inside the signed manifest. Give id \(a d1: decision or f1: finding id from a report\) or domain fo
- `machine\_record`: The unified machine record for one observation: subject, grade, findings \(the top one in full without a licence\), capabilities with verification, and the evidence roots, manifest and verifier links that let anyone check it offline. Give id \(report, d1:, f1: or manifest sha256\) or domain for the late

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html