ToolAssay

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18,966 tools. Tools that answered our last check come first.

Calculates floor-area ratio and lot coverage and compares use, height, parking a
Answering prop.halowerk.com listed $0.004 answered 5 of 5 checks this week 1175 ms Everything else
Calculates reachable transitive dependency count and maximum depth from a suppli
Answering dep.halowerk.com listed $0.004 answered 5 of 5 checks this week 965 ms Everything else
Call OpenAI's gpt-4o-mini via a single pay-per-call x402 endpoint — no OpenAI ac
Answering netintel.dev listed $0.005 answered 5 of 5 checks this week 947 ms Search and research
Call this endpoint before publishing or after changing a public page when you ne
Answering seo.halowerk.com listed $0.001 answered 5 of 5 checks this week 1027 ms Code and developer
Call when an agent needs favicon and apple-touch icons extracted from a public p
Answering agentshelf.syntexa.ch listed $0.002 answered 5 of 5 checks this week 1555 ms Code and developer
Call when you want the current Musebook money-challenge leaderboard, trending lo
Answering x402-seller-a5et.onrender.com listed $0.01 answered 5 of 5 checks this week 473 ms Everything else
Caller E2E
Answering functions.miniup.app listed $0.001 answered 5 of 5 checks this week 939 ms Everything else
Cancels adjacent identical self-inverse gates on identical ordered targets and f
Answering quantum.halowerk.com listed $0.004 answered 5 of 5 checks this week 891 ms Everything else
Canonical JSON and its digest — Genesis402 / UnyKorn Operator Network
Answering twin.unykorn.org listed $0.002 answered 4 of 5 checks this week 256 ms Everything else
Canonical URL check
Answering intel.rallylive.ca listed $0.01, asks $0.001 answered 5 of 5 checks this week 20 ms Everything else
Canonical digests — sha256, sha512-256 and blake2b of text or canonical JSON — G
Answering twin.unykorn.org listed $0.003 answered 4 of 5 checks this week 255 ms Everything else
Canonicalizes firmware hash, version, device model and minimum bootloader versio
Answering iot.halowerk.com listed $0.003 answered 5 of 5 checks this week 874 ms Code and developer
Caps individual contributions when requested, computes each project’s raw quadra
Answering gov.halowerk.com listed $0.004 answered 5 of 5 checks this week 889 ms Everything else
Capture a screenshot of any webpage
Answering archtools.dev listed $0.01 answered 5 of 5 checks this week 181 ms Search and research
CarVector vehicle data — single API call
Answering api.carvector.io listed $0.01 answered 4 of 4 checks this week 504 ms Everything else
Case Law Search (U.S
Answering saylorinnovations.com listed $0.003 answered 4 of 4 checks this week 2654 ms Search and research
Catalog of covered stablecoins ranked by market cap, from the DefiLlama stableco
Answering api.agentstools.dev listed $0.005 answered 5 of 5 checks this week 984 ms Market data
Catalog of tokenized real-world-asset products ranked by TVL, from the DefiLlama
Answering api.agentstools.dev listed $0.005 answered 5 of 5 checks this week 997 ms Commerce and shopping
Catch-all mailbox hint (no SMTP probing)
Answering intel.rallylive.ca listed $0.01, asks $0.001 answered 5 of 5 checks this week 23 ms Everything else
Census of automated x402 monitors and index crawlers observed polling a Bazaar l
Answering store-production-8add.up.railway.app listed $0.25 answered 5 of 5 checks this week 1396 ms Commerce and shopping
Certificate issuance history from certificate-transparency logs
Answering intel.rallylive.ca listed $0.01, asks $0.001 answered 5 of 5 checks this week 19 ms Everything else
Chain-level stats
Answering defi-api.agenticfi.wtf listed $0.001 answered 5 of 5 checks this week 425 ms Market data
Change the @handle of an X account you control
Answering palmyr.ai listed $0.005 answered 5 of 5 checks this week 372 ms Everything else
Chat completions via Bittensor decentralized AI
Answering gateway.spraay.app listed $0.03 answered 3 of 3 checks this week 903 ms Everything else
Check ETH and USDC (or any ERC-20) balance of an address on Base — pre-flight fu
Answering quartermaster.surewhynot.app listed $0.001 answered 5 of 5 checks this week 18 ms Market data
Check Lottery Ticket Numbers Against a Draw
Answering saylorinnovations.com listed $0.001 answered 4 of 4 checks this week 632 ms Everything else
Check a URL before fetching it
Answering toolbelt402.tpoborne.workers.dev listed $0.005 answered 5 of 5 checks this week 490 ms Everything else
Check a revision handoff before reusing evidence
Answering www.mahastrategies.com listed $0.006 answered 5 of 5 checks this week 344 ms Everything else
Check backlinks for a domain via CommonCrawl and Google search
Answering api.strale.io listed $0.162 answered 5 of 5 checks this week 962 ms Search and research
Check citation metadata before an evidence review
Answering www.mahastrategies.com listed $0.016 answered 5 of 5 checks this week 319 ms Everything else
Check declared dependency identity, source and digest coverage
Answering phion.systems listed $0.003 answered 5 of 5 checks this week 753 ms Everything else
Check domain availability and current registration price
Answering stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app listed $0.01 answered 5 of 5 checks this week 285 ms Code and developer
Check if a domain is available or registered via RDAP (no key needed)
Answering archtools.dev listed $0.01 answered 5 of 5 checks this week 184 ms Everything else
Check invoices, contracts, tenders, and text documents for required fields and s
Answering i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws listed $0.25 answered 5 of 5 checks this week 667 ms Everything else
Check public HTML for common accessibility failures including missing image text
Answering i3p3mgbsn54dvlivnk6wbumal40eqtsn.lambda-url.us-east-1.on.aws listed $0.2 answered 5 of 5 checks this week 690 ms Image and media
Check the ERC20 allowance an owner has granted a spender, returns raw and format
Answering api.x402node.dev listed $0.005 answered 5 of 5 checks this week 478 ms Code and developer
Check the status of a Base transaction
Answering quartermaster.surewhynot.app listed $0.002 answered 5 of 5 checks this week 27 ms Everything else
Check transaction status on Base or Solana
Answering openrelay.hggfffdfy687.workers.dev listed $0.001 answered 5 of 5 checks this week 246 ms Market data
Check up to 10 specific claims against up to 4 specific source URLs
Answering hubvibe-io.com listed $5.00 answered 5 of 5 checks this week 830 ms Everything else
Check whether a Base wallet holds enough USDC to pay an x402 amount (default $0.
Answering x402.agentindex.world listed $0.001 answered 4 of 4 checks this week 925 ms Market data
Check whether a smart contract's source code is verified on the block explorer,
Answering api.x402node.dev listed $0.005 answered 3 of 3 checks this week 474 ms Code and developer
Check whether an IPv4 address belongs to a CIDR block
Answering intel.rallylive.ca listed $0.01, asks $0.001 answered 5 of 5 checks this week 21 ms Everything else
Check whether an icon you already have meets real platform rules — W3C maskable
Answering imagcon.app listed $0.01 answered 5 of 5 checks this week 334 ms Image and media
Checks an address against the OFAC SDN list of sanctioned digital-currency addre
Answering 402.com.tr listed $0.02 answered 5 of 5 checks this week 572 ms Company and compliance
Checks whether a value you did not fetch yourself is actually on the page it cam
Answering scrapecheck.fly.dev listed $0.01 answered 5 of 5 checks this week 280 ms Everything else
Checks whether a website or web address is currently reachable and reports how f
Answering url-uptime-checker.underscoredone.com listed $0.01 answered 5 of 5 checks this week 728 ms Everything else
Checksums of a file at a URL (up to 5 MB)
Answering intel.rallylive.ca listed $0.01, asks $0.001 answered 4 of 5 checks this week 20 ms Everything else
Chemical Compound Lookup (PubChem)
Answering saylorinnovations.com listed $0.002 answered 4 of 4 checks this week 1866 ms Image and media
Chess Daily answer check — legally validates a complete UCI principal line again
Answering agent-arcade.use.x402atlas.com listed $0.005 answered 5 of 5 checks this week 631 ms Everything else
Chess Player Ratings & Stats (Lichess)
Answering saylorinnovations.com listed $0.001 answered 4 of 4 checks this week 688 ms Everything else
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