{"id":"03f33749-266d-4268-b37a-ea1ab8fa4caf","shortId":"9d5cCX","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 is one of many x402-enabled API resources offered by the platform. The specific resource `/api/v1/generate/resource/153` is labeled \"Premium API Access\" and accepts POST requests, settling payments in USDC on the Base network at $0.02 per call (20,000 base units with 6 decimals). No API keys or accounts are required; callers pay per request using the x402 protocol's X-PAYMENT header.\n\nThe broader lowpaymentfee.com platform advertises a wide catalog of endpoints spanning 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 with no rate limits, no minimums, and no commitments.\n\nHowever, the specific functionality behind `/api/v1/generate/resource/153` 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. Without knowing what this resource actually generates or returns, callers should treat this as an opaque endpoint until further documentation is available.","tags":[],"capabilities":["x402-payment","per-request-billing","usdc-settlement","base-network","post-method","no-api-key","pay-per-use"],"categories":["infrastructure","api-gateway"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","lowpaymentfee","Base network API","crypto-paid API","premium API access"],"warnings":["No documentation exists for what /api/v1/generate/resource/153 actually does or returns","No OpenAPI schema, request body format, or response examples are available","All doc/pricing/API pages render only 'Connect wallet' with no usable content","The endpoint description 'Premium API Access' is generic and uninformative"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/153","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/153","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what this specific resource does, no request/response schema, and the docs pages are empty. The listing is effectively a 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'/request':13,28,152 '0.02':12,27,70,151 '000':74 '20':73 '6':78 'Base network API' 'USDC micropayment API' 'accept':58 'access':7,22,56,179 'account':84 'actual':211 'addit':204 'advertis':104 'ai':118 'analysi':122 'analyt':112 'api':6,21,42,55,81,178,193 'avail':227 'base':9,24,67,75 'base-network' 'behind':168 'beyond':173 'broader':101 'call':4,19,72 'caller':87,215 'catalog':107 'classif':125 'commit':163 'connect':199 'content':205 'convers':142 'crypto-paid API' 'data':111,115 'decim':79 'doc':190 'document':172,225 'embed':126 'enabl':41 'endpoint':32,109,145,222 'estim':136 'exampl':187 'exchang':131 'export':116 'feed':130 'financ':127 'function':167 'gas':135 'generat':143,212 'generic':175 'geocod':140 'header':99 'howev':164 'infrastructur':138 'insight':117 'key':82 'know':207 'label':53,176 'learn':120 'limit':158 'list':147 'lowpaymentfee' 'lowpaymentfee.com':34,102 'machin':119 'mani':38 'metric':113 'minimum':160 'network':68 'no-api-key' 'offer':44 'one':36 'opaqu':221 'openapi':183 'page':194 'pay':2,17,88 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-use' 'payment':62,98 'per':3,18,71,89 'per-request-billing' 'platform':47,103 'point':154 'post':59 'post-method' 'premium':5,20,54,177 'premium API access' 'price':129,153,191 'prompt':201 'protocol':94 'quot':134 'rate':132,157 'render':196 'report':114 'request':60,90 'request/response':186 'requir':86 'resourc':43,50,210 'return':214 'schema':184 'sentiment':121 'settl':61 'span':110 'specif':49,166 'summar':124 'text':123 'token':133 'treat':217 'unit':76 'usdc':15,30,64 'usdc-settlement' 'use':91 'util':139 'valid':141 'via':10,25 'wallet':200 'web3':128 'wide':106 'without':206 'x':97 'x-payment':96 'x402':11,26,40,93 'x402 API' 'x402-enabled':39 'x402-payment'","prices":[{"id":"9ffaf3eb-3201-46b5-a180-3fbbb0b44242","listingId":"03f33749-266d-4268-b37a-ea1ab8fa4caf","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/153","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:06.532Z"}],"sources":[{"listingId":"03f33749-266d-4268-b37a-ea1ab8fa4caf","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/153","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:06.532Z","lastSeenAt":"2026-04-24T11:31:44.017Z"}],"details":{"listingId":"03f33749-266d-4268-b37a-ea1ab8fa4caf","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/153 \\\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 in USDC (asset 0x8335…) on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/153"},{"claim":"All endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a pay-per-call resource without needing API keys or subscriptions","Agent-driven workflows that settle per-request payments in USDC on Base","Testing x402 protocol integrations with a low-cost endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-as-you-go API access","Users who want to avoid subscription commitments for occasional API calls"],"notFor":["Users who need well-documented endpoints with clear input/output schemas","High-volume use cases where per-request pricing may add up versus flat-rate plans","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:45.848Z"},"updatedAt":"2026-04-24T11:31:44.017Z"}}