Evidence row 202223

What was observed

{
  "count": 25,
  "tools": [
    {
      "description": "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, published facts that directories agree with, FTC phone complaints) with reasons for and against each; sites that share one phone number or near-identical homepage text are collapsed into one network so a copycat cannot outrank the business it copies. Signed.",
      "inputSchema": {
        "properties": {
          "city": {
            "description": "e.g. Denver",
            "type": "string"
          },
          "domains": {
            "description": "Candidate sites, bare domains, up to 10",
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "trade": {
            "description": "e.g. tree service",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "best_source"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "corpus_state"
    },
    {
      "description": "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 it for every identity plus the stores and breaks. Uses the latest record on file, or scans first when there is none (fresh=true forces a scan). The answer-engine output is drawn but never measured.",
      "inputSchema": {
        "properties": {
          "agent": {
            "description": "Identity id or label, e.g. claudebot, GPTBot, Googlebot",
            "type": "string"
          },
          "domain": {
            "type": "string"
          },
          "fresh": {
            "description": "Scan now instead of using the record on file",
            "type": "boolean"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "crawler_path"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "draft_llms"
    },
    {
      "description": "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 for its top finding. Other findings, and lookups by code, need a licence for that domain (send it in x-crawlcheck-key).",
      "inputSchema": {
        "properties": {
          "code": {
            "description": "Finding code (licence only)",
            "type": "string"
          },
          "domain": {
            "description": "Bare domain; alone it explains the top finding",
            "type": "string"
          },
          "id": {
            "description": "d1: decision id, f1: finding id, or report id",
            "type": "string"
          },
          "path": {
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "explain_finding"
    },
    {
      "description": "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 another publisher is named with the page that prints it), or not_published. address: matches, same_street_other_city, former_value, not_this_business, not_published or nothing_declared. hours: a week (Mo-Fr 08:00-17:00) gives matches or differs per day; a moment (Sa 10:00) gives open or closed. service_area: declared, not_declared or nothing_declared. Built from the business's own site (and its Business Profile for the licence holder), its dated fact history, CrawlCheck's scans of other sites, and for an unknown number a web search whose cited pages are read plus a YellowPages reverse lookup.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "Bare domain of the business, e.g. example.com",
            "type": "string"
          },
          "field": {
            "enum": [
              "phone",
              "address",
              "hours",
              "service_area"
            ],
            "type": "string"
          },
          "value": {
            "description": "The value you hold: a 10-digit number, a street address, a week (Mo-Fr 08:00-17:00) or a moment (Sa 10:00), or a place name",
            "type": "string"
          }
        },
        "required": [
          "domain",
          "field",
          "value"
        ],
        "type": "object"
      },
      "name": "field_check"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "fix_entitymap"
    },
    {
      "description": "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 which the detector stops firing.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "Uses the latest scan on file",
            "type": "string"
          },
          "id": {
            "description": "Report id",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "fix_machine_chain"
    },
    {
      "description": "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 add. Give domain (fetched now) or id (a stored scan).",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "id": {
            "description": "Report id: plan from the stored scan instead of fetching",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "fix_mostly_code"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "fix_robots"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "id": {
            "description": "Report id; the page is still fetched now, because cache state is live",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "fix_stale_cache"
    },
    {
      "description": "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 actions are ever called; everything else says why it was not. From the latest scan on file.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "verified_only": {
            "description": "Return only the capabilities that were confirmed",
            "type": "boolean"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "list_verified_capabilities"
    },
    {
      "description": "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 latest.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "id": {
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "machine_record"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "Bare domain or host, e.g. example.com",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "mcp_servers"
    },
    {
      "description": "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 policy can only make the decision stricter. Do not proceed on block; ask the user on require_confirmation.",
      "inputSchema": {
        "properties": {
          "action": {
            "description": "What you are about to do (default read)",
            "enum": [
              "read",
              "cite",
              "connect",
              "transact",
              "administer"
            ],
            "type": "string"
          },
          "agent": {
            "description": "Your crawler user-agent token, e.g. GPTBot",
            "type": "string"
          },
          "domain": {
            "description": "Bare domain, e.g. example.com",
            "type": "string"
          },
          "policy": {
            "description": "max_age_hours, on_warn (warn|require_confirmation|block), require_entity, human_approval[], allow[], deny[]",
            "type": "object"
          },
          "template": {
            "description": "safe_citation, safe_data_retrieval, safe_api_connect, safe_mcp_tool, safe_commerce, safe_oauth or support_escalation",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "preflight"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "public_counts"
    },
    {
      "description": "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 site. A row exists because a fetch produced it; nothing here is self-reported and no payment moves a shelf.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "A bare domain. Omit for the corpus-wide shelf counts.",
            "type": "string"
          },
          "shelf": {
            "description": "Filter the list to one shelf: llms, agents, mediakit, entity, aipolicy, agentapi",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "registry_lookup"
    },
    {
      "description": "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, with its doubts and maximum age), what changed, and the evidence behind each part, marked declared, observed or not_measured with its time. There is no overall score. A domain never measured gets a just-in-time partial answer within about 2 seconds that names every part not read in time, and is queued for the full scan; nothing is guessed.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "Bare domain, e.g. example.com",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "resolve_domain"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "path": {
            "description": "Path to test, default /",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "resolve_robots"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "description": "A bare domain such as example.com, or a full URL",
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "scan_domain"
    },
    {
      "description": "Verified-crawler traffic observed at crawlcheck.io itself: which named agents arrived, how many claims were confirmed against operator ranges, how many were forged.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "telemetry"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "lines": {
            "description": "Up to 200 raw log lines, newline separated",
            "type": "string"
          }
        },
        "required": [
          "lines"
        ],
        "type": "object"
      },
      "name": "verify_crawler_log"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "handle": {
            "description": "@channel handle",
            "type": "string"
          },
          "id": {
            "description": "Channel id, if no handle",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "video_channel"
    },
    {
      "description": "One YouTube video against the video anchor model: metadata, chapters, captions and storyboard where observed, twelve checks each naming what it reads.",
      "inputSchema": {
        "properties": {
          "fresh": {
            "description": "Bypass the six-hour cache",
            "type": "boolean"
          },
          "v": {
            "description": "Video id or URL",
            "type": "string"
          }
        },
        "required": [
          "v"
        ],
        "type": "object"
      },
      "name": "video_check"
    },
    {
      "description": "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.",
      "inputSchema": {
        "properties": {
          "domain": {
            "type": "string"
          },
          "handle": {
            "type": "string"
          }
        },
        "required": [
          "domain"
        ],
        "type": "object"
      },
      "name": "video_site"
    }
  ]
}

What the leaf hashes

{"body":"4cc4a6843134de6092382e852cf865fbd40026eb02c5aa54e2d822f19863100c","id":202223,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793026277839395,"prev":null,"subject":"7e6ab0f7-7eec-406b-8ace-81e1238503a7","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x57d1c6805125388c50ac2c4f5c2c7bd2b0237635ec4750f1298efb3b83ddafa5
2. 0x7ed5df4ec9056dd14eadae30de0fd132dadf584649c61d5f199327fd1214962f
3. 0x8f6493d7d98daa4be648f3422240ba7fce746f63a9028be0bae3878b7475bfa9
4. 0xdfa6887ea19e40d300371dfd4bdc3314e979120a389376c99a434cba937cbac2
5. 0x0cbf6ac50e8d56474e5364fb560a387b4a785186f9130d8c82ff39e2136cda91
6. 0xd81aa7566da97c8b0d58e42e0fcb310b5ac93b77b2e131803700e59a095bf80d
7. 0x4a30de3e330c795227dd941befe6e127bb64bf2512fb6838e629a1d15c25c366
8. 0xbca8040db40b9ef0db1b3aaedf430e444d35becfa97b9d5f21a10021dc6b4998
9. 0x681bcabb2f756d0387e6a1b7b06e2f9b7427944e5ce5cdac6e1bace57297c0f1
10. 0xda3bffd0a7c24c98da7dc5357e8d748010f4817bac4b377a94cd382883fc809a
11. 0x86f49d35fee840c62060e3a6cbc75237dbfdc70dd7439506d3f085c9cca8e4f2
12. 0x01ecb94c2efbfb8e9050ebbd813fbba80bbcbc345f98de707345bc4bc88c94e8
13. 0x8ba3430866b4c11cea7eba9923ee4fa8a5074849df417006e4441426c1f13056
14. 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae