{"uid":"cap_YCpaGflTeUlhdVOE-7YZs","slug":"nightshift-usdc-transfer-verification-a0fecfa5","name":"Nightshift USDC Transfer Verification","description":"Pay-per-call Base USDC transfer verification over x402 (exact scheme). POST a tx hash, get on-chain verified sender/amount/block plus replay guard.","url":"https://103-119-2-176.sslip.io:8445/v1/verify-payment?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"from":"0x…","block":53265431,"verified":true,"amount_usdc":"2.0"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BM5Y9GMuXy7G58-fTaIfg","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a Base USDC on-chain transfer by transaction hash, returning sender address, amount, block number, and replay-attack guard status.","exampleAgentPrompt":"Can you verify that the Base USDC transaction 0xabc123... actually went through — I need to confirm the sender address, the amount in USDC, and the block it landed in, and make sure it hasn't been replayed?","exampleUseCases":[{"title":"Payment gate before service delivery","prompt":"I just got a tx hash from a customer claiming they paid 2 USDC on Base — can you verify it on-chain, confirm the sender and amount, and check it hasn't been replayed before I unlock their access?"},{"title":"Automated invoice reconciliation","prompt":"Check this Base USDC transaction hash 0xdeadbeef... and tell me the exact amount sent, who sent it, and which block it landed in so I can match it against our invoice #4421."},{"title":"Fraud and double-spend detection","prompt":"Has this transaction hash 0x9f3c... already been used to claim a reward? I need the on-chain verified sender and amount, plus confirmation there's no replay attempt."}],"resultDescription":"A JSON object containing the verified sender wallet address (from), the block number the transaction was included in (block), a boolean verified flag indicating on-chain confirmation and replay-guard status, and the USDC amount transferred (amount_usdc as a decimal string).","failureModes":["Invalid or malformed tx hash returns an error or verified:false","Transaction not yet confirmed on Base returns unverified status","Replay attack detected returns verified:false with replay flag","Network or RPC timeout may cause delayed response","Hash for a non-USDC or non-Base transaction may return incorrect or null amount"],"whenToPreferThis":"Choose this endpoint when you need authoritative, on-chain verification of a specific Base USDC transfer and require replay-attack protection — especially in pay-per-access or x402-gated workflows where double-spend prevention is critical. Prefer it over off-chain payment webhooks or self-built RPC calls when you want a single-call answer with sender, amount, block, and replay guard bundled together.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:30:38.878Z","isFirstParty":false,"canonicalSlug":"nightshift-usdc-transfer-verification-a0fecfa5"}