{"id":"700577bb-0c1d-40c5-b5aa-00ac0ac141a3","shortId":"KSGfDd","kind":"x402","title":"x402-payable account statements endpoint on Base, settling in USDC at $0.02/request.","tagline":"x402-payable account statements endpoint on Base, settling in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides account statement data behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/accounts/139/statements` accepts POST requests and returns JSON. The x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme with no API keys or rate limits required — callers simply attach an X-PAYMENT header with a valid payment proof.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the statements endpoint returns or what parameters it accepts. The endpoint is confirmed live (402 challenge captured), but the actual functionality behind the paywall is opaque from available materials.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","account-statements","pay-per-request","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["account statements API","financial statements endpoint","x402 API","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee"],"warnings":["No API documentation available — all doc pages return only a 'Connect wallet' prompt","No OpenAPI or JSON schema describing request parameters or response format","The specific data returned by /api/v1/accounts/139/statements is unknown; 'account 139' appears hardcoded with no explanation","Cannot verify what the endpoint actually returns without paying"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/139/statements","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/accounts/139/statements","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect prompt. The actual functionality of the statements endpoint is unknown, making this effectively a stub 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'/request':14,28 '0.02':13,27,69,109 '000':98 '0x8335':103 '20':97 '2913':104 '402':195 '6':113 'Base network API' 'USDC micropayment API' 'accept':84,189 'account':4,18,34 'account statements API' 'account-statements' 'actual':200 'advertis':93 'ai/ml':59 'analyt':58 'api':55,125,151 'attach':133 'avail':208 'base':8,22,78,99,106 'base-network' 'behind':37,202 'broader':46 'caller':131 'captur':197 'challeng':92,196 'confirm':193 'connect':160 'content':166 'crawl':149 'data':36,57,62 'decim':114 'descript':177 'doc':150 'document':144 'dozen':49 'endpoint':6,20,30,82,183,191 'equal':108 'exact':121 'exampl':174 'extrem':146 'field':180 'finance/web3':61 'financial statements endpoint' 'function':201 'given':110 'header':138 'infer':60 'infrastructur':64 'json':89 'json-response' 'key':126 'limit':129 'live':194 'lowpaymentfee' 'lowpaymentfee.com':32 'made':117 'materi':209 'maxamountrequir':95 'network':79 'no-api-key' 'offer':48 'opaqu':206 'openapi':170 'page':155 'paramet':187 'part':43 'pay':52 'pay-per-call API' 'pay-per-request':51 'payabl':3,17 'payment':115,137,142 'paywal':40,204 'per':53,70 'platform':47 'post':85 'price':67,152 'prompt':162 'proof':143 'provid':33 'rate':128 'readm':154 'request':54,71,86 'request/response':173 'requir':130 'return':88,157,184 'schema':171 'scheme':122 'settl':9,23,73 'simpli':132 'span':56 'spars':147 'specif':81 'statement':5,19,35,182 'substant':165 'unit':100 'usdc':11,25,75,102,111 'usdc-settlement' 'util':65 'valid':141 'via':118 'wallet':161 'x':136 'x-payment':135 'x402':2,16,39,91,120 'x402 API' 'x402-payable':1,15 'x402-payment'","prices":[{"id":"41e3a5f4-93f6-47b0-b388-2e33a111e876","listingId":"700577bb-0c1d-40c5-b5aa-00ac0ac141a3","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/accounts/139/statements","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:03.531Z"}],"sources":[{"listingId":"700577bb-0c1d-40c5-b5aa-00ac0ac141a3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/139/statements","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:03.531Z","lastSeenAt":"2026-04-29T03:04:50.755Z"}],"details":{"listingId":"700577bb-0c1d-40c5-b5aa-00ac0ac141a3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/139/statements \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/139/statements"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/139/statements"}],"useCases":["Retrieving account statement data programmatically via a single paid request","Integrating pay-per-use financial data into agent workflows without API key management","Accessing account records on-demand with USDC micropayments on Base"],"bestFor":["Agents or services that need on-demand account statement retrieval without subscription commitments","Developers wanting frictionless pay-per-request access without API key registration","Crypto-native applications already operating on the Base network"],"notFor":["Users who need detailed API documentation or schema guarantees before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:34.355Z"},"updatedAt":"2026-04-29T03:04:50.755Z"}}