{"uid":"cap_6O6SUNFuMM5Q7QxEAMhiW","slug":"halowerk-x402werk-settlement-transaction-verifier-243c7831","name":"HALOWERK x402werk — Settlement Transaction Verifier","description":"HALOWERK x402werk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://x402.netzhandwerker.de/settlement/verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"enum":["arb","arbitrum","arbitrum-one","avalanche","avax","base","base-mainnet","base-sepolia","basesepolia","eip155:1","eip155:10","eip155:137","eip155:42161","eip155:43114","eip155:8453","eip155:84532","eth","ethereum","ethereum-mainnet","mainnet","matic","op","op-mainnet","optimism","polygon"],"type":"string","description":"Chain of the transaction, as CAIP-2 (\"eip155:8453\"), as a short name (\"base\") or as the chain id (\"8453\")."},"tx_hash":{"type":"string","pattern":"^0x[0-9a-fA-F]{64}$","description":"Hash of the settlement transaction."},"expected":{"type":"object","required":["pay_to"],"properties":{"asset":{"type":"string","description":"Expected token contract address, or \"native\" for the chain coin. Omit to accept any token; asset_matches is then null."},"pay_to":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Address that was supposed to receive the payment — the seller, not the token contract."},"amount_units":{"type":"string","pattern":"^[0-9]{1,78}$","description":"Expected amount as an integer in the smallest unit of the token. Omit to skip the amount comparison; amount_matches is then null."}},"additionalProperties":false}}},"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_imcm_cWqdKTDf70Q2lWgY","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":"Verifies that a blockchain settlement transaction matches expected payment parameters (recipient, token, amount) across multiple EVM chains.","exampleAgentPrompt":"Can you verify that the Base mainnet transaction 0xabc123...def456 actually sent the correct USDC amount to my wallet address 0xRecipient... — I want to confirm the payment settled as expected before releasing the goods.","exampleUseCases":[{"title":"Confirm x402 micropayment before serving content","prompt":"Before I unlock this API response, verify that the settlement transaction 0x4f2a...8c91 on Base actually paid 2000 USDC units to my address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e using the USDC contract 0xA0b8...eB48."},{"title":"Audit a DeFi payment on Arbitrum","prompt":"Check whether the Arbitrum One transaction 0x9b3e...f112 correctly transferred the expected amount to 0x1234...abcd — I need to know if the amount and recipient both match before I mark this invoice as paid."},{"title":"Validate cross-chain settlement in automated workflow","prompt":"I just received a payment claim on Polygon — can you verify that tx hash 0xde4f...7721 on the matic chain actually went to 0xSeller...5678 for at least 500000 token units so my workflow can proceed?"}],"resultDescription":"Returns a verification object indicating whether the transaction exists on the specified chain, and boolean match flags for whether the recipient address (pay_to), token asset, and transferred amount align with the expected values provided in the request. If optional fields like asset or amount_units are omitted, the corresponding match fields are returned as null.","failureModes":["Invalid or malformed tx_hash (not a valid 0x-prefixed 64-char hex) returns validation error","Unrecognized chain identifier returns error","Transaction not yet indexed or not found on chain returns not-found error","Mismatch between expected and actual recipient, asset, or amount returns false match flags rather than an error","Network or RPC timeout for the specified chain returns a service error","pay_to address missing (required field) returns a 400-level error"],"whenToPreferThis":"Use this endpoint when you need to programmatically confirm that an on-chain EVM payment transaction settled correctly against specific expected parameters — particularly in x402-based payment flows where you must validate a settlement tx hash before releasing a resource or continuing a workflow. Prefer this over manual block explorer lookups when automating payment verification across Base, Arbitrum, Ethereum, Polygon, Optimism, Avalanche, or their testnets.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:41:50.993Z","isFirstParty":false}