{"id":"6e2460ca-f1b7-47d4-938b-483203db268f","shortId":"WqPpxP","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.","tagline":"x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.","description":"This endpoint is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The specific resource at `/api/v1/generate/resource/88` is listed as \"Premium API Access\" but its exact functionality is not documented beyond that label.\n\nPayment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC, which at 6 decimals equals $0.02 USD — consistent with the site's advertised flat pricing of $0.02 per request. The endpoint accepts POST requests and returns `application/json`. No API keys are required; access is granted purely through the x402 payment header. The site advertises no rate limits and instant access.\n\nDocumentation is extremely sparse. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what data or functionality this particular resource provides. The endpoint is confirmed live (returns a proper 402 challenge), but without knowing what `resource/88` actually does, callers will need to experiment or contact the provider for details.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-api","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["lowpaymentfee","x402 api","pay per call api","micropayment api","USDC api","base network api","premium api access"],"warnings":["The exact functionality of /api/v1/generate/resource/88 is unknown — 'Premium API Access' is the only description provided.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.","No OpenAPI schema, no request body schema, and no response examples are available.","The platform lists many endpoints but none appear to have public documentation beyond a title and price."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/88","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/88","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality of 'resource/88' is completely undocumented. This is effectively a stub 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'/request':17,34 '0.02':16,33,121,132 '000':111 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':102 '20':110 '402':216 '6':118 'USDC api' 'accept':137 'access':77,148,165 'actual':223 'addit':186 'advertis':128,159 'ai/ml':59 'amount':105 'analyt':58 'api':5,22,55,76,144,173 'application/json':142 'base':8,25,97,112 'base network api' 'beyond':85 'call':12,29,108 'caller':225 'challeng':217 'collect':46 'confirm':211 'connect':181 'consist':123 'contact':231 'content':187 'contract':101 'data':57,63,201 'decim':119 'descript':198 'detail':235 'doc':171 'document':84,166 'endpoint':6,23,36,136,209 'equal':120 'exact':80 'exampl':195 'experi':229 'extrem':168 'financ':61 'flat':129 'function':81,203 'gate':3,20 'grant':150 'handl':90 'header':156 'infer':60 'infrastructur':65 'instant':164 'json-api' 'key':145 'know':220 'label':87 'limit':162 'list':73 'live':212 'lowpaymentfee' 'lowpaymentfee.com':41 'maximum':104 'micropayment api' 'need':227 'network':98 'no-api-key' 'offer':44 'openapi':191 'page':176 'part':38 'particular':205 'pay':10,27,52 'pay per call api' 'pay-per-cal':9,26 'pay-per-request':51 'payment':88,155 'per':11,28,53,107,133 'platform':42 'post':138 'post-method' 'premium':4,21,75 'premium api access' 'price':130,172 'prompt':183 'proper':215 'protocol':50,94 'provid':207,233 'pure':151 'rate':161 'readm':175 'render':178 'request':54,134,139 'request/response':194 'requir':106,147 'resourc':69,206 'resource/88':222 'return':141,213 'schema':192 'site':126,158 'span':56 'spars':169 'specif':68 'unit':113 'usd':122 'usdc':14,31,100,115 'usdc-base' 'use':99 'util':66 'via':91 'wallet':182 'web3':62 'without':219 'x402':2,19,49,93,154 'x402 api' 'x402-gated':1,18 'x402-payment' 'x402-protocol':48","prices":[{"id":"6d2c0193-78a3-4f05-8cf4-a34ffe6ccac9","listingId":"6e2460ca-f1b7-47d4-938b-483203db268f","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/88","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:42.907Z"}],"sources":[{"listingId":"6e2460ca-f1b7-47d4-938b-483203db268f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/88","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:42.907Z","lastSeenAt":"2026-04-22T19:30:52.636Z"}],"details":{"listingId":"6e2460ca-f1b7-47d4-938b-483203db268f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/88 \\\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 challenge with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/88"},{"claim":"The site advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/88"},{"claim":"Documentation, pricing, API, and README pages show only a 'Connect wallet' prompt.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a premium API resource with per-call USDC micropayments","Agent-driven workflows that need keyless, pay-as-you-go API access on Base","Testing x402 protocol integrations with a low-cost live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless pay-per-request API access","Low-cost micropayment API consumption on Base L2"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Use cases requiring free or subscription-based access models","Anyone needing to know exactly what the endpoint returns before paying"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:40.979Z"},"updatedAt":"2026-04-22T19:30:52.636Z"}}