CrawlWitness MCP Server

by crawlwitness Your server? Claim it

answering

CrawlWitness is answering right now. Last checked 6 min ago. It exposes 6 tools.

AI consent & licensing check for any domain, with signed on-chain receipts. Paid via x402.

Uptime history 21 hours of history

21 hours agonow

100.0%

Uptime 24h

77 of 77 checks

Tools

read from the server

522 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check CrawlWitness every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add oracle --transport http https://api.crawlwitness.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://api.crawlwitness.com/mcp

~/.codex/config.toml

[mcp_servers.oracle]
url = "https://api.crawlwitness.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "oracle": {
      "url": "https://api.crawlwitness.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "oracle": {
      "type": "http",
      "url": "https://api.crawlwitness.com/mcp"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

consent

ai_consent_score

Free summary for a domain: 0-100 signal score and AI-training stance (reservado = reserved, permitido = allowed, sin_senal = no signal), from cache when available.

check_ai_consent

Full AI-consent report for a domain: robots.txt rules for each AI bot (training, search and user-agent crawlers), RSL license, IETF AIPREF Content-Usage, W3C TDMRep, noai meta tags, llms.txt and C2PA, combined into a 0-100 score and a training stance, plus a verifiable receipt (EAS attestation anchored on Base). Use it before crawling, training on or ingesting a site. Costs 0.005 USD in USDC via x402 (Base or Solana); without a payment it returns the x402 payment options. Unreachable sites are not charged.

can

can_ai_use

Fast yes/no verdict for one domain, one AI bot and one use (train, rag or search), from robots.txt, IETF AIPREF, W3C TDMRep, noai directives and RSL licenses, with the reasons and a signed receipt. Use it in a crawler or RAG pipeline before fetching each new domain. Costs 0.001 USD on Base (0.002 on Solana) via x402. Invalid domain or unknown bot is never charged.

signal

signal_history

What a domain's robots.txt (or llms.txt, tdmrep.json, RSL license, homepage headers) said at a given instant, with the SHA-256 of each version and its EAS attestation anchored on Base. Without `source` it returns the index of versions; with `source` (and optional `at`, RFC 3339) the document in force at that instant. Covers only domains already analysed.

verify

verify_receipt

Returns the signed EAS attestation of a paid query and, once anchored, its Merkle proof (OpenZeppelin format) and the on-chain attestation on Base that contains it.

wallet

check_wallet

Sanctions screening of a crypto address against the US OFAC SDN list (all its digital-currency addresses: EVM, BTC, TRX, SOL, USDT, USDC…). Use it before an agent pays, receives from or interacts with a wallet. Returns sanctioned true/false, the listed entity and programs, the exact list version used and a signed receipt. Costs 0.005 USD via x402. Screening aid, not legal advice.

Endpoints

URL	Transport	State	Latency	Checked
https://api.crawlwitness.com/mcp	streamable-http	answering	512 ms	6 min ago

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CrawlWitness — questions

Answers built from our own checks of this server.

What can CrawlWitness do?

It exposes 6 tools, read directly from the server on our last check. Among them: ai_consent_score, can_ai_use, check_ai_consent, check_wallet, signal_history, verify_receipt. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is CrawlWitness working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 77 of 77 checks got a reply (100.0%), average response time 522 ms. The bar chart above shows every period we have measured.

How do I connect CrawlWitness?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does CrawlWitness need an API key?

No. CrawlWitness completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is CrawlWitness?

It answers our handshake in 522 ms on average, which is faster than 23% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.