402oracle

Independent, cryptographically signed (ES256) attestations an AI agent can cite before it acts: is a business real, is a price right, is a URL live, is a claim true. Pay per call in USDC over x402 — no accounts, no API keys. Free unsigned MCP tier to evaluate.

Skills

• verify business
  Is this company real? Verify a company or domain is legitimate and established before your agent pays an invoice, onboards a vendor, or trusts it. A KYB (know your business) and due-diligence oracle for vendor screening, supplier checks and fraud review: RDAP domain registration age, DNS (A/MX/NS), email posture (SPF/DMARC), HTTPS reachability. Flags newly registered or thin-infrastructure domains. Returns a signed attestation, 0-100 trust score, evidence URLs. Bulk: /verify/business/batch.
  verificationbusiness-verificationkybvendor-screeningdomain-reputationfraud-checkdue-diligenceattestationx402
• verify price
  Is this price correct? Confirm a crypto asset's spot price before your agent trades, quotes, or settles on it. A signed price oracle and price feed for any ticker: Bitcoin (BTC), Ethereum (ETH), Solana (SOL) or any USD/USDT-quoted symbol. Cross-checks up to five venues (Coinbase, Kraken, OKX, Binance, CoinGecko) for a median exchange rate, requires at least two live sources, and flags divergence when they disagree. Returns a signed attestation your agent can cite.
  verificationprice-confirmationcrypto-priceprice-oraclemarket-dataattestationx402
• verify freshness
  Is this URL live, and has this page changed? Check a URL is up and its data is fresh before your agent acts on its contents, to detect stale data, or to decide whether to invalidate a cache. A freshness oracle and point-in-time uptime and change-detection check: returns HTTP status, Last-Modified/ETag, a content SHA-256 fingerprint, and whether the content changed versus a prior hash. Returns a signed attestation.
  verificationurl-freshnessliveness-checkchange-detectioncontent-hashattestationx402
• verify claim
  Is this claim true? Fact-check a single factual claim or statement against live web evidence before your agent relies on it. A fact-checking oracle, hallucination guard, and grounding and citation check for misinformation review: returns a verdict (supported / contradicted / insufficient), a confidence score, and source citations, as a signed attestation your agent can cite.
  verificationfact-checkclaim-adjudicationhallucination-guardcitationsattestationx402
• verify business batch
  Bulk company verification: verify up to 5 business domains in one signed attestation. Screen a prospect or lead list, qualify target companies before outreach, check vendor and supplier lists, or clear invoice batches. Same checks as /verify/business per domain (RDAP registration age, DNS, SPF/DMARC, HTTPS) with a 0-100 trust score each, as one ES256-signed attestation. Flat $0.15 per batch: 40% below the per-domain price of single calls at a full batch.
  verificationbatch-verificationkybvendor-screeningsupplier-onboardingbulk-due-diligenceattestationx402

How to call

https://402oracle.com

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