{"id":"ef0bbfe9-020c-41ec-8cf2-7e1cca096430","shortId":"NwPbpf","kind":"x402","title":"x402-gated premium API access on Base, paid per-request in USDC.","tagline":"x402-gated premium API access on Base, paid per-request in 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/148` is listed as \"Premium API Access\" and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 exact payment scheme. The maximum amount required per call is 20,000 units of the USDC token (which, given USDC's 6 decimals, equals $0.02 per request).\n\nThe provider's landing page advertises a broad catalog of endpoints 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 minimum commitments. However, the specific functionality behind `/api/v1/generate/resource/148` is not documented beyond the generic label \"Premium API Access,\" so its exact behavior is unclear.\n\nDocumentation pages (/docs, /api, /pricing, /README) all returned only a \"Connect wallet\" prompt with no substantive content, so there is no schema, example request/response, or detailed usage guide available. The endpoint is confirmed live via a valid 402 challenge, but the lack of documentation makes it difficult to determine what this particular resource generates or returns.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","per-request-billing","post-endpoint","json-response"],"categories":["api","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 endpoint","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["The exact functionality of /api/v1/generate/resource/148 is unknown — 'Premium API Access' is a generic label with no further documentation.","All documentation pages (/docs, /api, /pricing, /README) returned only a 'Connect wallet' prompt with no substantive content.","No input schema or output schema is documented; callers cannot know what to send or what to expect back.","The provider's catalog lists many endpoints but none appear individually documented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/148","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/148","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, but the specific resource's purpose is entirely undocumented. All doc pages return only 'Connect wallet' with no content. No input/output schema, no examples, and no description beyond the generic 'Premium API Access' label. This is effectively a stub 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'/api/v1/generate/resource/148':50,166 '/docs':185 '/pricing':187 '/readme':188 '0.02':100,147 '000':87 '0x8335':71 '20':86 '2913':72 '402':220 '6':97 'Base network API' 'USDC API' 'accept':58 'access':6,20,56,176 'advertis':108 'ai':117 'amount':81 'analysi':121 'analyt':116 'api':5,19,41,55,152,175 'avail':211 'base':8,22,66 'base-network' 'behavior':180 'behind':165 'beyond':170 'broad':110 'call':84 'catalog':111 'challeng':221 'classif':123 'commit':160 'confirm':215 'connect':193 'content':199 'contract':70 'convers':140 'data':115 'decim':98 'detail':208 'determin':231 'difficult':229 'document':169,183,226 'embed':124 'endpoint':30,113,143,213 'equal':99 'estim':134 'exact':76,179 'exampl':205 'exchang':129 'feed':128 'financ':125 'function':164 'gas':133 'gate':3,17,40 'generat':141,236 'generic':172 'geocod':138 'given':94 'guid':210 'howev':161 'infrastructur':136 'json-response' 'key':153 'label':173 'lack':224 'land':106 'learn':119 'limit':156 'list':52 'live':216 'lowpaymentfee' 'lowpaymentfee.com':32 'machin':118 'make':227 'mani':36 'maximum':80 'micropayment API' 'minimum':159 'network':67 'offer':43 'one':34 'page':107,184 'paid':9,23 'particular':234 'pay-per-call API' 'payment':61,77 'per':11,25,83,101,148 'per-request':10,24 'per-request-billing' 'post':59 'post-endpoint' 'premium':4,18,54,174 'premium API' 'price':127,145 'prompt':195 'protocol':39 'provid':46,104 'quot':132 'rate':130,155 'request':12,26,60,102,149 'request/response':206 'requir':82 'resourc':42,49,235 'return':190,238 'schema':204 'scheme':78 'sentiment':120 'settl':63 'span':114 'specif':48,163 'substant':198 'summar':122 'token':92,131 'unclear':182 'unit':88 'usag':209 'usdc':14,28,69,91,95 'usdc-payment' 'use':68 'util':137 'valid':139,219 'via':73,217 'wallet':194 'web3':126 'x402':2,16,38,75 'x402 endpoint' 'x402-gated':1,15 'x402-payment' 'x402-protocol-gated':37","prices":[{"id":"dc20262c-95db-4b2d-a5f3-74146b5c0861","listingId":"ef0bbfe9-020c-41ec-8cf2-7e1cca096430","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/148","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:03.914Z"}],"sources":[{"listingId":"ef0bbfe9-020c-41ec-8cf2-7e1cca096430","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/148","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:03.914Z","lastSeenAt":"2026-04-23T04:00:38.808Z"}],"details":{"listingId":"ef0bbfe9-020c-41ec-8cf2-7e1cca096430","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/148 \\\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":"Endpoint returns a valid x402 402 challenge with scheme 'exact', network 'base', maxAmountRequired 20000, and USDC asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/148"},{"claim":"Provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Provider lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a generation endpoint with per-request USDC micropayments","Agent-driven API consumption without API keys or subscriptions","Demonstrating x402 payment protocol integration on Base"],"bestFor":["Developers experimenting with x402 payment-gated APIs","Agents that need keyless, pay-per-call API access on Base","Projects requiring low-friction micropayment API consumption"],"notFor":["Users who need well-documented endpoints with clear input/output schemas","High-volume use cases where $0.02/request adds up without volume discounts","Anyone needing guaranteed SLAs or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.731Z"},"updatedAt":"2026-04-23T04:00:38.808Z"}}