Security & trust: MCP servers, A2A agents and x402 APIs

• eucompliance.tools Live x402

  Crypto spot price that attempts three independent public exchange tickers (Binance, Coinbase, Kraken) and takes the median of the live replies. Every delivered quote, the spread and the timestamp are disclosed. Refuses…

  x402 paid API · 10 endpoints · check 90/100

• LION Verified Company Data Live x402

  Keyless x402 on Base USDC for AI agents: cheapest OFAC wallet screen ($0.001), multi-list sanctions + signed compliance receipt, company research/org enrich from $0.03, verified company file $0.95. Live Wikidata+SEC+DNS…

  x402 paid API · 12 endpoints · check 90/100

• agents.dyoeway.org Live x402

  Check whether a website, business, or wallet is a scam before an agent trusts or pays it — fraud, phishing and rug-risk screening. Returns verdict (safe/caution/avoid), trust_score, domain age, red_flags. Input: ?target…

  x402 paid API · 12 endpoints · check 88/100

• aurelianflo.com Live x402

  Exact-match OFAC wallet screening and crypto wallet sanctions check for sanctioned digital currency addresses. Screens one wallet address against Treasury's public SDN advanced XML and returns hit or clear status, asset…

  x402 paid API · 1 endpoint · check 88/100

• chain.openverbs.com Live x402

  Live recommended Bitcoin transaction fee rates (in sat/vB) for next-block, ~30-minute, ~1-hour, economy and minimum confirmation targets, straight from the mempool. Also estimates the total fee (in sats and BTC) for a t…

  x402 paid API · 12 endpoints · check 88/100

• defi.hugen.tokyo Live x402

  Check if a URL is a known crypto phishing or scam site — covers fake DEX frontends, wallet drainers, approval phishing pages, and counterfeit protocol clones. Real-time detection against threat intelligence databases. N…

  x402 paid API · 12 endpoints · check 88/100

• flipvo.com Live x402

  Cheapest possible paid call: proves your wallet, our 402, and the receipt path work. Returns pong and a timestamp. (13 paid endpoints on api.flipvo.com.)

  x402 paid API · 12 endpoints · check 88/100

• sanctions.cyberwarex.com Live x402

  Screen an EVM wallet or contract address BEFORE paying it. Deterministic, keyless compliance / safety gate: checks the address against the OFAC sanctioned crypto-address list and a curated taint set (mixer, hack, scam)…

  x402 paid API · 1 endpoint · check 88/100

• trust-agent.io Live x402

  Sanctions screening for a crypto wallet before you pay it: checks the address, and an agent's owner and payout wallet, against OFAC SDN-listed EVM addresses, then returns a 0-100 trust score, risk band and proceed / hol…

  x402 paid API · 11 endpoints · check 88/100

• twin.unykorn.org Live x402

  LLM chat completion (qwen2.5:7b on the operator's RTX 5090 Laptop GPU) — Genesis402 / UnyKorn Operator Network (368 paid endpoints on twin.unykorn.org.)

  x402 paid API · 12 endpoints · check 88/100

• verdixapi.com Live x402

  Verdix standard ($0.10): call before larger or repeated payments to an EVM address on Base, when an address-age read is not enough. Sanctions, scam/phishing lists, address poisoning and contract/deployer signals, plus o…

  x402 paid API · 5 endpoints · check 88/100

• wallet-sanctions.use.x402atlas.com Live x402

  Wallet sanctions check for a validated EVM or Solana address. Returns a direct verdict, recommended action, match evidence, source lists, and an explicit AML-scope caveat. (2 paid endpoints on wallet-sanctions.use.x402a…

  x402 paid API · 2 endpoints · check 88/100

• x402-tools-production-2755.up.railway.app Live x402

  Use before sending funds to check that a recipient isn't sanctioned. Screens up to 50 crypto addresses (ETH/EVM, BTC, TRX, USDT, SOL and more) against the addresses on the US Treasury OFAC SDN list, refreshed daily, ret…

  x402 paid API · 12 endpoints · check 88/100

• api.agentstools.dev Live x402

  Keyword news search across web news engines (Bing/DuckDuckGo/Yahoo via ddgs). Returns dated headlines with title/url/snippet/source/image + freshness/region/safesearch filters.

  x402 paid API · 12 endpoints · check 80/100

• Rooms paid tools (x402) Live x402

  7 pay-per-call lookups for agents, paid with USDC on Base over x402, no account or key: x402 trust check, Rooms agent verification, Wallet snapshot, ERC-20 token facts, ENS resolve, Web page to markdown, Email address c…

  x402 paid API · Rooms by Aurmada · 7 endpoints

• agentfeeds.jp Live x402

  Freshness heartbeat only (list date, address count, fetched_at) for both Japan MOF and OFAC sanctions lists. No addresses. Cheapest polling entry point for change-detection loops. (13 paid endpoints on api.agentfeeds.jp…

  x402 paid API · 12 endpoints

• aislabs.ai Live x402

  CVEs added to CISA KEV in the last 7 days (complete catalog), annotated with today's AIS ranks — or unlock every CVE route with an AIS CVE key ($19/30d): https://aislabs.ai/gateway/ (5 paid endpoints on api.aislabs.ai.)

  x402 paid API · 5 endpoints

• banking-compliance-production.up.railway.app Live x402

  Search the federal banking compliance rules database. 56 rules across Reg DD, Reg Z, UDAAP, ECOA, BSA/AML, and more.

  x402 paid API · 1 endpoint

• billitright.co Live x402

  Password - CASA Cybersecurity Assessment - Consolidates evidence on secure communications, including certificate validity, hostname matching, protocol and cipher strength, forward secrecy, and TLS vulnerabilities. It de…

  x402 paid API · 1 endpoint

• compliapi.com Live x402

  Screen a website URL or domain against OFAC SDN and other global sanctions lists. Call before paying, advertising on, or integrating with a website to check for sanctions associations. Returns per-list matches with sour…

  x402 paid API · 4 endpoints

• factline.dev Live x402

  Use when you need to check that a Dutch address exists or get its exact spelling and coordinates: official BAG address from postcode + house number or free text, latitude/longitude, BAG ids, municipality, province and C…

  x402 paid API · 12 endpoints

• geoip.bip-rep.com Live x402

  Resolve any public IPv4/IPv6 address (or hostname) to geolocation for analytics, fraud, and ops agents. Returns ISO country code, region, city, IANA timezone, latitude/longitude, EU membership flag, and the matched netw…

  x402 paid API · 1 endpoint

• macaroonnetwork.com Live x402

  Discover which Macaroon Network service, endpoint, or data product to call next. Searches Macaroon's own published catalogue -- title, category, description, price, and trust evidence metadata -- and returns a short, so…

  x402 paid API · 12 endpoints

• professorsausages.com Live x402

  Newest headlines from a deduped, tiered 972-feed direct portfolio (primary sources + wires/majors + trade press + Hacker News + gated GDELT), newest first, up to 100 per call — filter by category, source, and language;…

  x402 paid API · 12 endpoints

• safe.cyberwarex.com Live x402

  Score a URL for phishing risk before an agent opens or trusts it. Keyless, deterministic heuristics - typosquat / homoglyph of a known brand, punycode / mixed-script hosts, credentials-in-URL, raw-IP hosts, suspicious T…

  x402 paid API · 1 endpoint

• sicher.halowerk.com Live x402

  Providers each build their signing string differently — some sign only the body, others prepend a timestamp, an id, or a version marker in a fixed order — and getting that order wrong produces a mismatch that looks exac…

  x402 paid API · 4 endpoints

• telesint-api.onrender.com Live x402

  IOC feed from Telegram CTI channels. Filters: type(ip|domain|url|hash|cve), severity, min_confidence, since, tlp, tag, channel, limit, offset. Returns items[] with iocs[], ttps[], confidence, severity, tlp, tags[]. (11…

  x402 paid API · 11 endpoints

• tensorfeed.ai Live x402

  Agent morning brief. One paid call returns the last 24 hours of AI pricing changes, new and removed models, service-status incidents, and top news headlines. The endpoint an agent calls on boot. (9 paid endpoints on ten…

  x402 paid API · 9 endpoints

• thetrustlayer.xyz Live x402

  Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent. (2 paid endpoints on api.thetrustlayer.xyz.)

  x402 paid API · 2 endpoints

• tools.halowerk.com Live x402

  Ordnet eine Warenbeschreibung der sechsstelligen Harmonisierten Nomenklatur der Weltzollorganisation zu, 6.940 Positionen. Versteht deutsche Warenbezeichnungen einschliesslich zusammengesetzter Woerter ueber einen Fachw…

  x402 paid API · 12 endpoints

• trust.nsgoods.org Live x402

  Cross-chain ERC-8004 trust score for one (chain, agent) pair — signed JSON with transparent component breakdown (value_avg / client_breadth / volume / recency), per-chain context, and methodology link. USDC pay-per-call…

  x402 paid API · 2 endpoints

• vrsai.tech Live x402

  Check an exact npm or PyPI package version immediately before installation using current registry, vulnerability, malicious-package, withdrawal/deprecation, and verified provenance evidence. Returns ALLOW, REVIEW, BLOCK…

  x402 paid API · 1 endpoint

• x402-data-api.onrender.com Live x402

  IP geolocation: country, region, city, coordinates, and timezone for any IPv4 or IPv6 address. Fast in-memory lookup for analytics, fraud, and personalization agents. (2 paid endpoints on x402-data-api.onrender.com.)

  x402 paid API · 2 endpoints

• x402-filings.datalayer.workers.dev Live x402

  Job postings read straight from a company's own applicant tracking system — Greenhouse, Lever, Ashby, SmartRecruiters, BambooHR or Recruitee. This is the source that job boards scrape, so there are no duplicates, no exp…

  x402 paid API · 6 endpoints

• x402check.xyz Live x402

  Check a counterparty before paying: OFAC SDN, phishing and drainer feeds, a live watch of drainer infrastructure, transaction simulation and injected-instruction analysis. Returns a score and a signed ES256 attestation.…

  x402 paid API · 2 endpoints

Related capabilities

x402 paid APIsOn-chain dataLegal & complianceEmailCoding & dev toolsMaps & travelAgent infrastructureTrading & markets

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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