{"id":"bb2710fe-581c-4af1-956a-2bbf6caded9b","shortId":"pQuQux","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides a transaction receipt retrieval service accessible via the x402 payment protocol. The specific resource `/api/v1/transactions/263/receipt` returns a receipt for transaction ID 263 in JSON format. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced uniformly at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nThe x402 challenge is live and functional, accepting POST requests. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using the exact payment scheme on Base. The maximum timeout for payment is 300 seconds. Documentation pages beyond the landing page appear to require wallet connection and provide no additional technical detail.","tags":[],"capabilities":["x402-payment","transaction-receipt","usdc-settlement","base-network","pay-per-call","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","x402 endpoint","pay-per-request API","USDC micropayment","Base network API","lowpaymentfee","crypto payment API"],"warnings":["No API documentation available beyond landing page — docs/pricing/README pages all require wallet connection with no content","No request or response schema provided for this endpoint","Endpoint appears to be for a specific transaction ID (263) rather than a general-purpose resource — unclear if parameterized","Platform legitimacy and data quality cannot be verified from available materials"],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/263/receipt","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/263/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and confirms pricing and network details, but there is no OpenAPI schema, no response examples, no documentation beyond a landing page listing, and the specific endpoint's purpose (transaction 263 receipt) is opaque with no schema for request or response 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'/request':13,28 '0.02':12,27,76,134 '000':80 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':164 '20':79 '263':57 '300':178 '6':84 'Base network API' 'USDC micropayment' 'accept':156 'access':41 'addit':194 'address':163 'advertis':90 'ai':102 'analysi':106 'analyt':96 'api':92,139 'appear':186 'base':9,24,66,81,171 'base-network' 'beyond':182 'broader':87 'call':4,19 'categori':93 'challeng':151 'classif':109 'coin':71 'commit':147 'connect':190 'convers':126 'cost':74 'crypto payment API' 'data':95,99 'decim':85 'detail':196 'document':180 'embed':110 'endpoint':7,22,32,129 'estim':120 'exact':167 'exchang':115 'export':100 'feed':114 'financ':111 'format':60 'function':155 'gas':119 'generat':127 'geocod':124 'id':56 'includ':94 'infrastructur':122 'insight':101 'json':59 'json-response' 'key':140 'land':184 'learn':104 'limit':143 'live':153 'lowpaymentfee' 'lowpaymentfee.com':34,88 'machin':103 'made':161 'maximum':173 'metric':97 'minimum':146 'multipl':91 'network':67 'no-api-key' 'page':181,185 'pay':2,17 'pay-per-cal':1,16 'pay-per-call' 'pay-per-request API' 'payment':45,61,159,168,176 'per':3,18,77,135 'platform':89 'post':157 'price':113,131 'protocol':46 'provid':35,192 'quot':118 'rate':116,142 'receipt':6,21,38,53 'report':98 'request':78,136,158 'requir':148,188 'resourc':49 'retriev':39 'return':51 'scheme':169 'second':179 'sentiment':105 'servic':40 'settl':63 'specif':48 'summar':108 'technic':195 'text':107 'timeout':174 'token':117 'transact':5,20,37,55 'transaction receipt API' 'transaction-receipt' 'uniform':132 'unit':82 'usd':70 'usdc':15,30,69 'usdc-settlement' 'use':68,165 'util':123 'valid':125 'via':10,25,42 'wallet':189 'web3':112 'x402':11,26,44,150 'x402 endpoint' 'x402-payment'","prices":[{"id":"4d88ccad-d461-4b34-9c5f-d1d66fac89ef","listingId":"bb2710fe-581c-4af1-956a-2bbf6caded9b","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/transactions/263/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:59:37.807Z"}],"sources":[{"listingId":"bb2710fe-581c-4af1-956a-2bbf6caded9b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/263/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:59:37.807Z","lastSeenAt":"2026-04-24T14:33:33.595Z"}],"details":{"listingId":"bb2710fe-581c-4af1-956a-2bbf6caded9b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/263/receipt \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/263/receipt"},{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/263/receipt"}],"useCases":["Retrieving transaction receipts programmatically with per-call USDC payment","Integrating pay-as-you-go API access without managing API keys or subscriptions","Demonstrating x402 protocol payment flows for agent-to-agent commerce"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless, pay-per-call API access","Projects requiring on-chain payment settlement on Base"],"notFor":["High-volume batch processing where per-call fees add up quickly","Users without USDC on Base network","Applications requiring detailed API documentation or SDKs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:40.67Z"},"updatedAt":"2026-04-24T14:33:33.595Z"}}