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Directory / CrawlWitness
CrawlWitness
by api.crawlwitness.com · https://api.crawlwitness.com/mcp
AI consent & licensing check for any domain, with signed on-chain receipts. Paid via x402.
12 of 12 checks · 2 Nov 2026
Is CrawlWitness MCP server safe?
- None of the hidden-instruction wordings we know were found in its tool descriptions.
- Its error messages showed no secrets or internal details.
- All 6 of its tools are labeled read-only.
- Overall it scored 89/100 on 2 Nov 2026.
A test can only see what the server shows from outside, not what it does with your data behind the scenes. Connect servers from makers you trust.
What it can do
6 tools, in the server's own words.
check_ai_consentread-onlyFull 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 T…
can_ai_useread-onlyFast 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, …
ai_consent_scoreread-onlyFree summary for a domain: 0-100 signal score and AI-training stance (reservado = reserved, permitido = allowed, sin_senal = no signal), from cache when availa…
signal_historyread-onlyWhat 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 atte…
verify_receiptread-onlyReturns the signed EAS attestation of a paid query and, once anchored, its Merkle proof (OpenZeppelin format) and the on-chain attestation on Base that contain…
check_walletread-onlySanctions screening of a crypto address against the US OFAC SDN list (all its digital-currency addresses: EVM, BTC, TRX, SOL, USDT, USDC…).
Test results
Safe mode: only tools labeled read-only were run. How the test works
- !Every tool is describednote
1 warning
- !can_ai_use: Inputs with no description: use
- !Resources and prompts worknote
1 warning ()
- –Could not list resources: the server limited our requests (HTTP 429)
- !Listing resource templates failed: Error POSTing to endpoint: Too Many Requests! Wait for 0s
- –Could not list prompts: the server limited our requests (HTTP 429)
- ✓ConnectsConnected in 659 mspass
- ✓Ready for the newest MCP versionUses the latest MCP version (2026-07-28)pass
- ✓Lists its toolsFound 6 toolspass
- ✓Tools are labeled safe or dangerousEvery tool has a safety labelpass
- ✓No known hidden instructionsNone of the hidden-instruction wordings we know were found in tool descriptions. New wordings can get past this check.pass
- ✓Tools work with good inputspass
All good
- ✓check_ai_consent: Answered with an error, probably because of our sample input: dominio inválido
- ✓can_ai_use: Answered with an error, probably because of our sample input: dominio inválido
- ✓ai_consent_score: Answered with an error, probably because of our sample input: dominio inválido
- ✓signal_history: Answered with an error, probably because of our sample input: dominio inválido
- ✓verify_receipt: Answered with an error, probably because of our sample input: uid inválido: se esperan 0x + 64 hex
- ✓check_wallet: Answered with an error, probably because of our sample input: {"accepts":[{"amount":"5000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"maxTimeoutSeco…
- ✓Bad inputs give a clean errorpass
All good
- ✓check_ai_consent: Refused missing required input "domain" with a clear error
- ✓check_ai_consent: Refused wrong type for "domain" with a clear error
- ✓can_ai_use: Refused missing required input "domain" with a clear error
- ✓can_ai_use: Refused wrong type for "domain" with a clear error
- ✓ai_consent_score: Refused missing required input "domain" with a clear error
- ✓ai_consent_score: Refused wrong type for "domain" with a clear error
- ✓signal_history: Refused missing required input "domain" with a clear error
- ✓signal_history: Refused wrong type for "domain" with a clear error
- and 4 more
- ✓Fast enoughpass
All good
- ✓Connecting took 659 ms
- ✓Listing tools took 142 ms
- ✓Average tool answer: 143 ms
- ✓check_wallet: Slowest tool: check_wallet (151 ms)
- ✓No secrets leakedChecked 18 error messages: no secrets or internal detailspass
- ✓Follows MCP best practices (not scored yet)Tool names, safety labels and tool list size follow the MCP guidepass
- –Tools work togetherNo safe tool returned data to start a chain from, so chains were not tested (not counted either way)not tested
Test it yourself
Free and open source. Same checks, same score.
npx qamcp-cli https://api.crawlwitness.com/mcpShow this score on GitHub
Free for every server in the directory. Paste this into your README: the badge shows the score from our latest test.
[](https://qamcp.dev/s/com-crawlwitness-oracle.html)Score over time
- 2 Nov 202689
One test so far. New tests will show here.
Reviews
Coming soon: reviews from people who use CrawlWitness, signed in with GitHub, one per person. Reviews never change the score.
QAmcp Monitor (coming soon) tests it every hour and emails you when it goes down, the score drops, a tool changes or a secret leaks. You'll also be able to claim this page and get a verified owner mark. Founding price: $19/month for life for the first 50 teams.
Have a concern, or want it removed? Ask us and we'll take it off the list. How the directory works