{"id":"c8bda175-19c2-46ec-9b23-65c6b16ba690","shortId":"ZzPzPc","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com is one of many x402-protocol-gated API resources offered by the provider. The specific resource `/api/v1/generate/resource/48` is listed as \"Premium API Access\" and accepts POST requests, returning application/json responses. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 units (which, given USDC's 6 decimals, equals $0.02 per request). The x402 challenge is live and conforms to x402 version 1 with the \"exact\" payment scheme.\n\nThe broader lowpaymentfee.com platform advertises a suite of APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nHowever, the specific functionality behind `/api/v1/generate/resource/48` is not documented beyond the generic label \"Premium API Access.\" There is no OpenAPI schema, no request/response examples, and the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional content. The actual behavior of this endpoint—what it generates, what input it expects, and what output it returns—cannot be determined from available materials.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","pay-per-request","json-response","post-method"],"categories":["api","infrastructure"],"synonyms":["premium api","x402 api","pay-per-call api","USDC api","Base network api","lowpaymentfee","micropayment api"],"warnings":["No documentation exists for /api/v1/generate/resource/48 — its actual functionality is unknown","All docs/pricing/API pages render only 'Connect wallet' with no substantive content","No OpenAPI schema or request/response examples available","The endpoint path 'resource/48' suggests a generic or placeholder resource ID with unclear purpose"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/48","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/generate/resource/48","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint exists and accepts payment. However, there is zero documentation on what this specific resource does, no request/response schema, no examples, and the docs pages are empty beyond a wallet-connect prompt. The generic 'Premium API Access' label provides no actionable information about the endpoint's 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'0.02':90,151 '000':81 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':74 '1':103 '20':80 '6':87 'Base network api' 'USDC api' 'accept':58 'access':56,180 'actual':208 'addit':205 'advertis':113 'ai':121 'amount':78 'analysi':125 'analyt':120 'api':5,19,41,55,117,156,179,194 'application/json':62 'avail':229 'base':8,22,69 'base-network' 'behavior':209 'behind':169 'beyond':174 'broader':110 'cannot':225 'challeng':95 'classif':127 'commit':163 'conform':99 'connect':200 'content':206 'contract':73 'convers':144 'data':119 'decim':88 'determin':227 'doc':191 'document':173 'embed':128 'endpoint':6,20,30,147,212 'equal':89 'estim':138 'exact':106 'exampl':188 'exchang':133 'expect':219 'feed':132 'financ':129 'function':168 'gas':137 'gate':3,17,40 'generat':145,215 'generic':176 'geocod':142 'given':84 'howev':165 'infrastructur':140 'input':217 'json-response' 'key':157 'label':177 'learn':123 'limit':160 'list':52 'live':97 'lowpaymentfee' 'lowpaymentfee.com':32,111 'machin':122 'mani':36 'materi':230 'maximum':77 'micropayment api' 'network':70 'offer':43 'one':34 'openapi':184 'output':222 'page':195 'pay':10,24 'pay-per-call api' 'pay-per-request':9,23 'payment':64,107 'per':11,25,91,152 'platform':112 'post':59 'post-method' 'premium':4,18,54,178 'premium api' 'price':131,149,192 'prompt':202 'protocol':39 'provid':46 'quot':136 'rate':134,159 'render':197 'request':12,26,60,92,153 'request/response':187 'requir':164 'resourc':42,49 'respons':63 'return':61,224 'schema':185 'scheme':108 'sentiment':124 'settl':66 'span':118 'specif':48,167 'suit':115 'summar':126 'token':135 'unit':82 'usdc':14,28,72,85 'usdc-payment' 'use':71 'util':141 'valid':143 'version':102 'wallet':201 'web3':130 'x402':2,16,38,94,101 'x402 api' 'x402-gated':1,15 'x402-payment' 'x402-protocol-gated':37","prices":[{"id":"c18f6655-8e09-450f-81ff-e9956cd1db8d","listingId":"c8bda175-19c2-46ec-9b23-65c6b16ba690","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/generate/resource/48","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:08.708Z"}],"sources":[{"listingId":"c8bda175-19c2-46ec-9b23-65c6b16ba690","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/48","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:08.708Z","lastSeenAt":"2026-04-23T04:00:38.999Z"}],"details":{"listingId":"c8bda175-19c2-46ec-9b23-65c6b16ba690","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/48 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","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 x402 version 1, exact scheme, on Base network using USDC","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/48"},{"claim":"maxAmountRequired is 20000 (USDC units, i.e., $0.02)","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/48"},{"claim":"All endpoints priced at $0.02/request with no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/48"},{"claim":"Docs, pricing, and API pages show only 'Connect wallet' with no additional content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a pay-per-request API without API key registration","Agent-driven workflows that need on-demand resource generation via x402 payment","Integrating USDC micropayments on Base into automated pipelines"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents with x402-compatible wallets on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet","Use cases requiring well-documented input/output schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.508Z"},"updatedAt":"2026-04-23T04:00:38.999Z"}}