{"uid":"cap_82cc4ichqBKN23ueUwSTt","slug":"kushbitx-agentproof-usdc-payment-verification-05aba4d0","name":"KushBitx AgentProof — USDC Payment Verification","description":"Free protected spending policies for AI agents, plus pay-per-call Base transaction preflight, token risk and USDC payment verification. JavaScript SDK available on npm.","url":"https://kushbitx.com/api/verify-payment?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"enum":["base"],"type":"string"},"txHash":{"type":"string","pattern":"^0x[a-fA-F0-9]{64}$"},"expectedTo":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$"},"expectedFrom":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$"},"expectedAmount":{"type":"string","pattern":"^[0-9]+(\\.[0-9]{1,6})?$","description":"Expected USDC amount."}}},"responseSchema":{"type":"json","example":{"verdict":{"decision":"VERIFIED","verified":true},"transfers":[],"confirmations":1}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qMMDXbLKOTvpC50aohBug","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a Base chain USDC transaction by checking its hash, confirming sender/receiver, expected amount, and screening for token risk before an agent proceeds with a payment.","exampleAgentPrompt":"Before we release the digital download, verify that transaction 0xabc123...def on Base actually sent 5.00 USDC from 0xSenderAddress to 0xOurWalletAddress.","exampleUseCases":[{"title":"Agent payment gate before service delivery","prompt":"I need you to check that transaction 0x4f3a...9e1b on Base was a valid USDC payment of 2.50 from 0xBuyerWallet to 0xMyShopWallet before you send them the access code."},{"title":"Automated invoice reconciliation bot","prompt":"We just got a payment notification — can you verify that Base tx 0xd7c2...44fa sent exactly 100.00 USDC from 0xClientAddress to 0xOurTreasury so I can mark invoice #2041 as paid?"},{"title":"Token-risk screening before agent payout","prompt":"Before the agent sends a payout, screen this transaction hash 0x91be...77cc on Base — confirm it's coming from 0xUserWallet to 0xAgentPool for 0.50 USDC and flag any token risk issues."}],"resultDescription":"Returns a JSON object containing a verdict with a decision field (e.g. 'VERIFIED') and a boolean verified flag, a list of transfer events found on-chain, and the number of block confirmations. The agent can use this to gate downstream actions on payment success.","failureModes":["Transaction hash not found or not yet confirmed — returns unverified verdict","Amount mismatch — transaction found but USDC value differs from expectedAmount","Address mismatch — sender or receiver does not match expectedFrom/expectedTo","Token risk flag raised — transaction involves a screened or suspicious token","Invalid transaction hash format — 400 error if txHash does not match 0x hex pattern","Chain not supported — only 'base' is accepted; other chains return validation error","Insufficient confirmations — transaction exists but has too few block confirmations"],"whenToPreferThis":"Use this endpoint when an AI agent or automated workflow needs to gate an action (fulfillment, access grant, payout) on confirmed receipt of a USDC payment on Base. It combines transaction existence check, amount/address verification, and token-risk screening in a single call, making it ideal for agentic payment pipelines where trust in the incoming payment must be established before proceeding.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:35:51.826Z","isFirstParty":false,"canonicalSlug":"kushbitx-agentproof-usdc-payment-verification-05aba4d0"}