{"id":"5b67c9d7-4772-421f-9365-d9d15948f65d","shortId":"SmPSae","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/accounts/145` appears to be one of many endpoints offered by the platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe endpoint is live and returns a valid x402 challenge on POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment scheme is \"exact,\" meaning each call requires a one-time micropayment. There are no API keys, no rate limits, and no subscription commitments — callers simply attach an X-PAYMENT header with a valid payment proof.\n\nThe specific functionality behind `/api/v1/accounts/145` is not documented beyond the generic label \"Premium API Access.\" The platform's docs, pricing, and API pages all render only a wallet-connect prompt with no additional technical documentation, OpenAPI schema, or example request/response payloads. Without further documentation it is unclear what data or service this particular accounts endpoint returns. The broader platform lists endpoints for metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation, but none of these map directly to the `/api/v1/accounts/145` path.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","no-api-key","post-method"],"categories":["api-marketplace","payments"],"synonyms":["lowpaymentfee","x402 api","micropayment api","pay-per-call api","USDC api access","base network api","accounts endpoint"],"warnings":["The specific functionality of /api/v1/accounts/145 is not documented — 'Premium API Access' is a generic label","All documentation pages (docs, pricing, API, README) render only a wallet-connect prompt with no technical content","No OpenAPI spec, no request/response schema, and no example payloads are available","Cannot verify what data or service is actually returned after payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/145","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/145","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 challenge, but there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of /api/v1/accounts/145 is undocumented. The docs/pricing/API pages render only a wallet-connect prompt with no useful 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'/request':13,28 '0.02':12,27,78,117 '000':112 '0x8335':104 '20':111 '2913':105 '6':120 'USDC api access' 'access':7,22,38,175 'account':215 'accounts endpoint' 'addit':194 'advertis':60 'ai':67 'amount':109 'analysi':227 'analyt':66 'api':6,21,37,139,174,182 'appear':48 'attach':150 'base':9,24,99,113 'base network api' 'base-network' 'behind':164 'beyond':169 'broad':62 'broader':219 'call':4,19,129 'caller':148 'catalog':63 'challeng':90 'classif':230 'commit':147 'connect':190 'contract':103 'convers':238 'data':65,210 'decim':121 'direct':246 'doc':179 'document':168,196,205 'embed':231 'endpoint':32,54,82,216,222 'equal':116 'exact':126 'exampl':200 'exchang':234 'feed':233 'financ':70 'function':163 'generat':240 'generic':171 'geocod':236 'header':155 'infrastructur':73 'key':140 'label':172 'learn':69 'limit':143 'list':221 'live':84 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'mani':53 'map':245 'maximum':108 'mean':127 'metric':224 'micropay':135 'micropayment api' 'network':100 'no-api-key' 'none':242 'offer':55 'one':51,133 'one-tim':132 'openapi':197 'page':183 'particular':214 'path':46,250 'pay':2,17 'pay-per-cal':1,16 'pay-per-call api' 'pay-per-request' 'payload':202 'payment':42,94,123,154,159 'per':3,18,79 'platform':58,177,220 'post':92 'post-method' 'premium':5,20,36,173 'price':76,180,232 'prompt':191 'proof':160 'protocol':43 'provid':35 'rate':142,235 'render':185 'report':225 'request':80,93 'request/response':201 'requir':130 'return':86,217 'schema':198 'scheme':124 'sentiment':226 'servic':212 'settl':96 'simpli':149 'span':64 'specif':45,162 'subscript':146 'summar':229 'technic':195 'text':228 'time':134 'unclear':208 'unit':114 'usdc':15,30,102,118 'usdc-micropayment' 'use':101,119 'util':74 'valid':88,158,237 'via':10,25,39 'wallet':189 'wallet-connect':188 'web3':71 'without':203 'x':153 'x-payment':152 'x402':11,26,41,89 'x402 api' 'x402-payment'","prices":[{"id":"95decd2a-ff71-47e2-b274-1fc48f90531e","listingId":"5b67c9d7-4772-421f-9365-d9d15948f65d","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/145","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:09.065Z"}],"sources":[{"listingId":"5b67c9d7-4772-421f-9365-d9d15948f65d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/145","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:09.065Z","lastSeenAt":"2026-04-23T07:30:58.360Z"}],"details":{"listingId":"5b67c9d7-4772-421f-9365-d9d15948f65d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/145 \\\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 platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/145"},{"claim":"The platform lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium data or services with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to a multi-category API platform"],"bestFor":["Developers or agents wanting zero-commitment, pay-per-call API access","x402-compatible clients on the Base network","Use cases requiring no rate limits and instant access without signup"],"notFor":["Users needing detailed API documentation or guaranteed SLAs before purchasing","Applications requiring non-crypto payment methods","Callers who need to know the exact response schema before paying"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:34.117Z"},"updatedAt":"2026-04-23T07:30:58.360Z"}}