{"id":"496c645d-7b55-432e-9953-f95de8682bf4","shortId":"EfCjRa","kind":"x402","title":"Pay-per-call transaction receipt endpoint on Base via x402, priced at $0.02 in USDC.","tagline":"Pay-per-call transaction receipt endpoint on Base via x402, priced at $0.02 in USDC.","description":"This x402-enabled endpoint at lowpaymentfee.com provides access to a transaction receipt resource (transaction ID 370) via a POST request. It is part of a broader platform offering multiple API categories — data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced uniformly at $0.02 per request, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/transactions/370/receipt` returns a JSON response upon successful payment. The x402 challenge confirms the endpoint is live, accepting exact-scheme payments of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are required — access is granted purely through the x402 payment header.\n\nDocumentation on the site is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no example request/response payloads, and no description of what the receipt data actually contains. The platform lists many other endpoints across analytics, AI, finance, and utility categories, but the specific functionality of this transaction receipt endpoint is not documented beyond its title.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","transaction-receipt","json-response","no-api-key","no-rate-limit"],"categories":["finance","infrastructure"],"synonyms":["transaction receipt API","payment receipt endpoint","x402 API","USDC micropayment API","Base network API","lowpaymentfee","pay-per-call API"],"warnings":["Documentation pages (docs, API, pricing, README) all render only 'Connect wallet' with no usable content.","No OpenAPI or schema available — response format is completely unknown.","Endpoint references a specific transaction ID (370); unclear if this is a demo or a fixed resource.","No example request or response data available from any source."],"endpointUrl":"https://lowpaymentfee.com/api/v1/transactions/370/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/370/receipt","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, documentation is effectively absent — no OpenAPI spec, no example payloads, no description of what the receipt contains. The endpoint path references a hardcoded transaction ID (370), making its general utility 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'0.02':14,30,79,128 '000':117 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':139 '0x8335':122 '20':116 '2913':123 '300':142 '370':49 '6':132 'Base network API' 'USDC micropayment API' 'accept':108 'access':41,153 'across':212 'actual':204 'address':138 'ai':67,214 'analyt':66,213 'api':63,146,171 'base':9,25,87,118,125 'beyond':231 'broader':59 'call':4,20 'categori':64,218 'challeng':102 'confirm':103 'connect':180 'contain':205 'content':186 'data':65,203 'decim':133 'descript':198 'doc':170 'document':162,230 'enabl':36 'endpoint':7,23,37,91,105,211,227 'equal':127 'exact':110 'exact-schem':109 'exampl':193 'extrem':167 'financ':70,215 'function':222 'given':129 'grant':155 'header':161 'id':48 'infrastructur':73 'json':95 'json-response' 'key':147 'learn':69 'limit':150 'list':208 'live':107 'lowpaymentfee' 'lowpaymentfee.com':39 'machin':68 'mani':209 'multipl':62 'network':88 'no-api-key' 'no-rate-limit' 'offer':61 'openapi':190 'page':175 'part':56 'pay':2,18 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request' 'payload':195 'payment':99,112,134,160 'payment receipt endpoint' 'per':3,19,80 'platform':60,207 'post':52 'price':12,28,76,172 'prompt':182 'provid':40 'pure':156 'rate':149 'readm':174 'receipt':6,22,45,202,226 'render':177 'request':53,81 'request/response':194 'requir':152 'resourc':46 'respons':96 'return':93 'schema':191 'scheme':111 'second':143 'sent':136 'settl':82 'site':165 'spars':168 'specif':90,221 'success':98 'timeout':144 'titl':233 'transact':5,21,44,47,225 'transaction receipt API' 'transaction-receipt' 'uniform':77 'unit':119 'upon':97 'usdc':16,32,84,121,130 'usdc-base' 'util':74,217 'via':10,26,50 'wallet':181 'web3':71 'x402':11,27,35,101,159 'x402 API' 'x402-enabled':34 'x402-payment'","prices":[{"id":"608fdc42-04e3-4dd2-b929-a2ac275c2ae5","listingId":"496c645d-7b55-432e-9953-f95de8682bf4","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/370/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":"2026-04-18T19:26:33.136Z"}],"sources":[{"listingId":"496c645d-7b55-432e-9953-f95de8682bf4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/transactions/370/receipt","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:26:33.136Z","lastSeenAt":"2026-04-24T06:32:43.118Z"}],"details":{"listingId":"496c645d-7b55-432e-9953-f95de8682bf4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/transactions/370/receipt \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\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 HTTP 402 with x402 challenge accepting USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/transactions/370/receipt"},{"claim":"Platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/transactions/370/receipt"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/transactions/370/receipt"}],"useCases":["Retrieving a transaction receipt for transaction 370 via a single paid API call","Demonstrating x402 payment-gated API access on Base","Integrating pay-per-use receipt retrieval into agent workflows"],"bestFor":["Developers experimenting with x402 payment protocols","Agents needing on-demand transaction receipt data without API key management","Low-volume, pay-as-you-go API consumption on Base"],"notFor":["High-volume batch receipt retrieval (no documented bulk endpoints)","Users needing detailed documentation or schema guarantees before integration","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:37.587Z"},"updatedAt":"2026-04-24T06:32:43.118Z"}}