{"id":"93392258-2b43-482a-9e26-13efd24f06cc","shortId":"8Qwkjv","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource `/api/v1/accounts/182` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) with an exact payment scheme. The maxAmountRequired of 20000 base units corresponds to $0.02 (USDC uses 6 decimals). The platform advertises a broad suite of sibling endpoints including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, and more — all at the same $0.02 price point.\n\nNote that the specific functionality behind `/api/v1/accounts/182` is not well-documented. The endpoint title is simply \"Premium API Access\" with no further schema, input/output documentation, or examples available from the crawled pages. The docs, pricing, API, and README pages all rendered only a \"Connect wallet\" prompt with no substantive content. Without additional documentation it is unclear what data or service this particular account endpoint returns.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-method","json-response"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 paid API","USDC API access","Base network API","micropayment API","pay-per-call API"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content","The specific functionality of /api/v1/accounts/182 is unknown; 'Premium API Access' is the only description","No OpenAPI spec, no input/output schema, and no example responses are provided","The platform lists many endpoint categories (AI, finance, data, infrastructure) but it is unclear if they are all functional"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/182","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/182","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this specific endpoint does, no input/output schema, no examples, and all doc pages returned only a wallet-connect prompt. The listing is effectively a 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'0.02':12,28,77,134,167 '0x8335':117 '20000':129 '2913':118 '6':137 'Base network API' 'USDC API access' 'accept':105 'access':7,23,40,189 'account':233 'addit':222 'advertis':141 'ai':63 'analysi':150 'analyt':62 'api':6,22,39,89,188,206 'avail':198 'base':9,25,85,120,130 'behind':175 'broad':143 'call':4,20 'categori':71 'chain':113 'challeng':98 'classif':153 'commit':94 'confirm':99 'connect':214 'content':220 'contract':116 'correspond':132 'crawl':201 'data':61,228 'decim':138 'doc':204 'document':181,195,223 'embed':154 'endpoint':34,54,73,101,147,183,234 'exact':123 'exampl':197 'exchang':157 'feed':156 'financ':66 'function':174 'geocod':159 'includ':148 'infrastructur':69 'input/output':194 'json-response' 'key':90 'learn':65 'limit':92 'live':103 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':64 'mani':53 'maxamountrequir':127 'micropayment API' 'network':86 'no-api-key' 'note':170 'offer':55 'on-chain':111 'one':51 'page':202,209 'paid':80 'particular':232 'pay':2,18 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request' 'payment':44,108,124 'per':3,13,19,29,78 'platform':58,140 'point':169 'post':106 'post-method' 'premium':5,21,38,187 'price':75,155,168,205 'prompt':216 'protocol':45 'provid':37 'rate':91,158 'readm':208 'render':211 'request':14,30,79,107 'requir':95 'resourc':48 'return':235 'schema':193 'scheme':125 'sentiment':149 'servic':230 'settl':110 'sibl':146 'simpli':186 'span':60 'specif':47,173 'substant':219 'suit':144 'summar':152 'text':151 'titl':184 'unclear':226 'unit':131 'usdc':16,32,82,115,135 'usdc-base' 'use':114,136 'util':70 'valid':160 'via':10,26,41 'wallet':215 'web3':67 'well':180 'well-docu':179 'without':221 'x402':11,27,43,97 'x402 paid API' 'x402-payment'","prices":[{"id":"3de021ee-c2ff-479f-8b45-b7142f18eb80","listingId":"93392258-2b43-482a-9e26-13efd24f06cc","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/182","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:34.347Z"}],"sources":[{"listingId":"93392258-2b43-482a-9e26-13efd24f06cc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/182","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:34.347Z","lastSeenAt":"2026-04-23T06:04:01.605Z"}],"details":{"listingId":"93392258-2b43-482a-9e26-13efd24f06cc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/182 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/accounts/182"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/accounts/182"},{"claim":"Platform advertises $0.02/request pricing 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/accounts/182"},{"claim":"Platform lists endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to premium API services without subscription or API key management","Agent-driven workflows that need on-demand paid endpoints settled in USDC on Base","Exploring x402 payment protocol integration with a low-cost test endpoint"],"bestFor":["Developers experimenting with x402 payment-gated APIs","AI agents that can autonomously pay for API calls on Base","Users who want no-commitment, pay-as-you-go API access"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","Anyone without a Base-compatible USDC wallet","High-volume consumers who need bulk pricing or rate-limit guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:32.777Z"},"updatedAt":"2026-04-23T06:04:01.605Z"}}