{"id":"22660f1f-fc55-47ef-b4a7-91d6cc223a20","shortId":"Ca22JU","kind":"x402","title":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","tagline":"Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.","description":"lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/customers/7` is listed as \"Premium API Access\" and returns JSON. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0.02 USD per call), settled to a Base-network wallet address.\n\nThe broader 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 listed at the same $0.02/request price point. The platform emphasizes no API keys, no rate limits, and instant access — callers simply attach an x402 payment header to each request.\n\nThe specific functionality behind `/api/v1/customers/7` is not documented beyond the label \"Premium API Access.\" There is no OpenAPI schema, no request/response examples, and the docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. The actual data returned by this endpoint is unknown from available materials.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","json-response","no-api-key","http-post"],"categories":["api-platform","data"],"synonyms":["low payment fee","x402 api","pay per call api","usdc api","base network api","micropayment api","premium api access"],"warnings":["No OpenAPI or schema documentation available for this endpoint","All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no content","The actual data returned by /api/v1/customers/7 is completely undocumented — purpose is unclear","No request body schema or response schema provided"],"endpointUrl":"https://lowpaymentfee.com/api/v1/customers/7","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/customers/7","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 captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what the endpoint actually returns, no OpenAPI schema, no request/response examples, and all doc pages are empty beyond a wallet-connect prompt. The specific purpose of /api/v1/customers/7 is 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'/request':13,28,141 '0.02':12,27,80,140 '000':75 '20':74 'accept':46 'access':62,155,179 'actual':207 'addit':204 'address':91 'advertis':95 'ai':107 'analysi':111 'analyt':101 'api':5,20,38,61,97,148,178 'attach':158 'avail':216 'base':8,23,51,76,88 'base network api' 'base-network':87 'behind':169 'beyond':174 'broader':93 'call':4,19,83 'caller':156 'categori':98 'challeng':68 'classif':114 'connect':199 'content':205 'convers':131 'cost':72 'data':100,104,208 'doc':190 'document':173 'embed':115 'emphas':146 'endpoint':55,134,212 'estim':125 'exampl':187 'exchang':120 'export':105 'feed':119 'financ':116 'function':168 'gas':124 'generat':132 'geocod':129 'header':162 'http-post' 'includ':99 'indic':69 'infrastructur':127 'insight':106 'instant':154 'json':65 'json-response' 'key':149 'label':176 'learn':109 'limit':152 'list':58,136 'low payment fee' 'lowpaymentfee.com':31 'machin':108 'materi':217 'maximum':71 'metric':102 'micropayment api' 'multipl':96 'network':9,24,52,89 'no-api-key' 'openapi':183 'page':194 'pay':2,17,35 'pay per call api' 'pay-per-cal':1,16 'pay-per-request':34 'payment':48,161 'per':3,18,36,82 'platform':6,21,39,94,145 'point':143 'premium':60,177 'premium api access' 'price':118,142,191 'prompt':201 'protocol':44 'quot':123 'rate':121,151 'readm':193 'render':196 'report':103 'request':37,165 'request/response':186 'return':64,209 'schema':184 'sentiment':110 'settl':84 'simpli':157 'specif':54,167 'summar':113 'text':112 'token':122 'unit':77 'unknown':214 'usd':81 'usdc':15,30,47,79 'usdc api' 'usdc-base-network' 'use':41 'util':128 'valid':130 'via':10,25 'wallet':90,200 'web3':117 'x402':11,26,43,67,160 'x402 api' 'x402-payment'","prices":[{"id":"82020e72-3750-4204-82b7-90165cda67e2","listingId":"22660f1f-fc55-47ef-b4a7-91d6cc223a20","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/customers/7","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:35:44.589Z"}],"sources":[{"listingId":"22660f1f-fc55-47ef-b4a7-91d6cc223a20","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/customers/7","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:44.589Z","lastSeenAt":"2026-04-25T04:02:28.416Z"}],"details":{"listingId":"22660f1f-fc55-47ef-b4a7-91d6cc223a20","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/customers/7 \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/customers/7"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/customers/7"}],"useCases":["Accessing premium data or customer records via a single paid HTTP call","Agent-driven workflows that need stateless, keyless API access with crypto micropayments","Testing x402 payment protocol integrations on Base network"],"bestFor":["Developers or agents wanting keyless, pay-as-you-go API access","x402 protocol consumers on the Base network","Low-friction micropayment API experimentation"],"notFor":["Users who need detailed API documentation or response schemas before purchasing","High-volume consumers who need bulk pricing or subscription plans","Users without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:49.82Z"},"updatedAt":"2026-04-25T04:02:28.416Z"}}