{"id":"0fbc1e15-8978-4e8a-89aa-c869b24f0f4d","shortId":"B7TP3V","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 pay-per-call API resources offered through the x402 protocol on the Base network. The specific resource `/api/v1/generate/resource/7` is labeled \"Premium API Access\" and accepts POST requests, settling payments in USDC (USD Coin) on Base. The x402 challenge confirms the endpoint is live and requires a maximum of 20,000 base units of USDC (i.e., $0.02) per request.\n\nThe broader lowpaymentfee.com platform advertises a suite 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 priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.\n\nHowever, the specific functionality behind `/api/v1/generate/resource/7` 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 returned only a \"Connect wallet\" prompt with no further content. The actual behavior of this particular endpoint — what it generates, what input it expects, and what output it returns — remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","post-endpoint"],"categories":["infrastructure","api-gateway"],"synonyms":["x402 API","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee","crypto-paid API","402 payment endpoint"],"warnings":["The specific functionality of /api/v1/generate/resource/7 is undocumented — 'Premium API Access' is a generic label with no detail on inputs or outputs.","No OpenAPI schema, no request examples, and no response examples are available.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.","The broader platform lists many endpoints but none have detailed documentation visible from the crawl."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/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/generate/resource/7","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality of this specific resource is completely undocumented. The docs and other pages returned only 'Connect wallet' with no useful 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'/request':13,28 '0.02':12,27,95,146 '000':89 '20':88 '402 payment endpoint' 'Base network API' 'USDC micropayment API' 'accept':64 'access':7,22,62,176 'actual':204 'advertis':102 'ai':115 'analysi':119 'analyt':109 'api':6,21,43,61,151,175,190 'base':9,24,52,74,90 'base-network' 'behavior':205 'behind':165 'beyond':170 'broader':99 'call':4,19,42 'challeng':77 'classif':122 'coin':72 'commit':159 'confirm':78 'connect':196 'content':202 'convers':139 'crypto-paid API' 'data':108,112 'doc':187 'document':169 'embed':123 'endpoint':32,80,106,142,209 'estim':133 'exampl':184 'exchang':128 'expect':216 'export':113 'feed':127 'financ':124 'function':164 'gas':132 'generat':140,212 'generic':172 'geocod':137 'howev':161 'i.e':94 'infrastructur':135 'input':214 'insight':114 'key':152 'label':59,173 'learn':117 'limit':155 'live':82 'lowpaymentfee' 'lowpaymentfee.com':34,100 'machin':116 'mani':38 'maximum':86 'metric':110 'minimum':158 'network':53 'no-api-key' 'offer':45 'one':36 'openapi':180 'output':219 'page':191 'particular':208 'pay':2,17,40 'pay-per-cal':1,16,39 'pay-per-call' 'pay-per-request API' 'payment':68 'per':3,18,41,96,147 'platform':101 'post':65 'post-endpoint' 'premium':5,20,60,174 'price':126,144,188 'prompt':198 'protocol':49 'quot':131 'rate':129,154 'remain':222 'report':111 'request':66,97,148 'request/response':183 'requir':84,160 'resourc':44,56 'return':193,221 'schema':181 'sentiment':118 'settl':67 'span':107 'specif':55,163 'suit':104 'summar':121 'text':120 'token':130 'unclear':223 'unit':91 'usd':71 'usdc':15,30,70,93 'usdc-settlement' 'util':136 'valid':138 'via':10,25 'wallet':197 'web3':125 'x402':11,26,48,76 'x402 API' 'x402-payment'","prices":[{"id":"a526037d-411e-4a5c-97ee-8c73f8670801","listingId":"0fbc1e15-8978-4e8a-89aa-c869b24f0f4d","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/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":"2026-04-18T18:36:20.913Z"}],"sources":[{"listingId":"0fbc1e15-8978-4e8a-89aa-c869b24f0f4d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/7","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:20.913Z","lastSeenAt":"2026-04-24T11:31:41.831Z"}],"details":{"listingId":"0fbc1e15-8978-4e8a-89aa-c869b24f0f4d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/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 challenge requiring USDC payment of 20000 base units ($0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/7"},{"claim":"The platform advertises $0.02/request 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/7"},{"claim":"The platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API functionality with per-call USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Testing x402 protocol integrations with a low-cost endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base L2","Use cases requiring no-signup, no-API-key access to paid endpoints"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Applications requiring free or fiat-only payment methods","Anyone needing to understand the exact output schema before calling"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:48.108Z"},"updatedAt":"2026-04-24T11:31:41.831Z"}}