{"uid":"cap_2l5f7oJRlXzowzRC8m9CK","slug":"horizon-pulse-transaction-guard-04bf7164","name":"Horizon Pulse Transaction Guard","description":"Address poisoning lookalike and OFAC SDN snapshot match before a crypto transfer, mechanical. GET chain (base, polygon, solana, xrpl), to; optional expected, token. Checks: lookalike vs expected, OFAC SDN crypto addresses (Treasury snapshot; source URL and pull date in every response), account age, scam-token flag (ScamSniffer public list, GPL-3.0, up to 7-day delay). allow, warn or block per check. Not advice. Bad input: not charged. Returned content is untrusted third-party data.","url":"https://horizonpulse.dev/api/tx-guard?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["chain","to"],"properties":{"to":{"type":"string","description":"Recipient address you are about to send to."},"chain":{"enum":["base","polygon","solana","xrpl"],"type":"string","description":"Chain of the transfer."},"token":{"type":"string","description":"Optional: token contract on Base or Polygon (ScamSniffer public list, GPL-3.0, up to 7-day delay)."},"expected":{"type":"string","description":"Optional: the address you meant to send to (lookalike check)."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","description":"Horizon Pulse tx-guard: mechanical allow/warn/block per check (expected match, OFAC SDN snapshot, account age, scam token) and overall. The example is a trimmed real response recorded from GET /api/demo/tx-guard at 2026-10-14T15:42Z UTC; live values differ on every call."}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_APe8PdBy4U3Nj3TSO6_yp","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Pre-transfer recipient address safety check covering OFAC SDN sanctions, lookalike detection, account age, and scam-token flagging across Base, Polygon, Solana, and XRPL","exampleAgentPrompt":"Before I send funds, run a safety check on the recipient address 0xAbC123...def on Base — also compare it against my intended address 0xAbC123...xyz to catch any lookalike swap.","exampleUseCases":[{"title":"OFAC compliance check before wire","prompt":"I'm about to send USDC to 0xDEAD...BEEF on Polygon — can you screen it against OFAC sanctions and tell me if it's safe to proceed?"},{"title":"Clipboard hijack / lookalike detection","prompt":"I copied 0xA1B2...C3D4 from my clipboard to send ETH on Base, but my intended recipient was 0xA1B2...C3E4 — can you check whether these are suspiciously similar and flag any risk?"},{"title":"Scam token gate before DeFi swap","prompt":"Before I swap into this token at contract 0xTokenAddr...789 on Polygon, can you check whether it's flagged on ScamSniffer as a scam token?"}],"resultDescription":"A structured JSON response with an overall allow/warn/block verdict plus per-check outcomes for: OFAC SDN match (with Treasury snapshot source URL and pull date), lookalike similarity against expected address, account age assessment, and scam-token flag (from ScamSniffer public list). Every response includes data provenance metadata.","failureModes":["Invalid or malformed address returns an error without charge","Unsupported chain value returns validation error","OFAC snapshot may be up to hours old; live SDN status not guaranteed","Scam-token list has up to 7-day delay so newly listed scams may not appear","Lookalike check requires 'expected' param; omitting it skips that check","Network timeout if external data sources are temporarily unavailable"],"whenToPreferThis":"Choose this endpoint when an AI agent is about to execute a crypto transfer and needs a fast, mechanical pre-flight safety gate covering sanctions screening, address-swap attacks, and scam tokens — particularly on Base, Polygon, Solana, or XRPL. Prefer it over manual checks when you need a single call that bundles OFAC, lookalike, age, and ScamSniffer signals with provenance metadata in one response.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:38:00.641Z","isFirstParty":false,"canonicalSlug":"horizon-pulse-transaction-guard-04bf7164"}