{"id":"bb3deb7f-4efb-4411-9543-15bd08540bda","shortId":"dXY2sT","kind":"x402","title":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints on the platform, which offers a suite of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities—all priced at $0.02 per request settled in USDC on the Base network.\n\nThe specific resource `/api/v1/generate/resource/195` accepts POST requests and returns application/json responses. The x402 challenge confirms it is live, requiring a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the `exact` scheme with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through per-request micropayment.\n\nThe platform's documentation pages are largely empty (showing only \"Connect wallet\"), so the exact input/output schema for this particular resource is unknown. The endpoint name suggests a generation utility, but the specific functionality behind resource ID 195 is not documented in the crawled material. The broader site lists generation, geocoding, validation, and conversion under its Infrastructure category, but no detailed specs are available.","tags":[],"capabilities":["x402-payment","per-request-micropayment","usdc-base-network","json-response","post-method","no-api-key","no-rate-limit"],"categories":["infrastructure","utility"],"synonyms":["premium api","pay-per-call api","x402 endpoint","micropayment api","base network api","usdc api","generation api","lowpaymentfee"],"warnings":["No documentation available—all doc pages return only 'Connect wallet'","Exact input schema and response format for resource/195 are unknown","The specific functionality behind 'Premium API Access' resource 195 is not described anywhere in crawled content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/195","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/195","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing, but there is no documentation, no input/output schema, and no examples available. The specific functionality of resource/195 is 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'/request':16,34 '0.02':15,33,79,124 '000':113 '0x8335':118 '195':196 '20':112 '2913':119 '300':139 '6':128 'accept':93 'access':7,25,44,150 'advertis':149 'ai':68 'analyt':67 'api':6,24,43,64,143 'application/json':98 'avail':222 'base':9,27,87,114,121 'base network api' 'behind':193 'broader':205 'call':4,22 'categori':216 'challeng':102 'confirm':103 'connect':169 'convers':212 'crawl':202 'data':66 'decim':129 'detail':219 'document':162,199 'empti':166 'endpoint':38,55,183 'equal':123 'exact':135,173 'financ':71 'function':192 'generat':187,208 'generation api' 'geocod':209 'given':125 'grant':152 'id':195 'infrastructur':74,215 'input/output':174 'json-response' 'key':144 'larg':165 'learn':70 'limit':147 'list':207 'live':106 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':69 'made':132 'mani':54 'materi':203 'maximum':109 'micropay':158 'micropayment api' 'name':184 'network':10,28,88 'no-api-key' 'no-rate-limit' 'offer':60 'one':52 'page':163 'particular':178 'pay':2,20 'pay-per-cal':1,19 'pay-per-call api' 'payment':48,110,130 'per':3,21,80,156 'per-request':155 'per-request-micropayment' 'platform':58,160 'post':94 'post-method' 'premium':5,23,42 'premium api' 'price':77 'protocol':13,31,49 'provid':41 'pure':153 'rate':146 'request':81,95,157 'requir':107 'resourc':91,179,194 'respons':99 'return':97 'schema':175 'scheme':136 'second':140 'settl':82 'show':167 'site':206 'span':65 'spec':220 'specif':90,191 'suggest':185 'suit':62 'timeout':141 'unit':115 'unknown':181 'usdc':18,36,84,117,126 'usdc api' 'usdc-base-network' 'util':75,188 'valid':210 'via':11,29,45,133 'wallet':170 'web3':72 'x402':12,30,47,101 'x402 endpoint' 'x402-payment'","prices":[{"id":"a351d035-721c-477c-9fb8-aa51b7e9eda4","listingId":"bb3deb7f-4efb-4411-9543-15bd08540bda","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/195","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:45.114Z"}],"sources":[{"listingId":"bb3deb7f-4efb-4411-9543-15bd08540bda","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/195","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:45.114Z","lastSeenAt":"2026-04-28T20:04:13.893Z"}],"details":{"listingId":"bb3deb7f-4efb-4411-9543-15bd08540bda","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/195 \\\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 402 with x402 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/195"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/195"}],"useCases":["Accessing utility/generation endpoints without API key management","Making one-off API calls with instant crypto micropayments","Integrating pay-per-use infrastructure services into agent workflows"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents that can settle x402 payments autonomously on Base","Projects needing low-friction access to utility endpoints without subscriptions"],"notFor":["Users who need detailed documentation or OpenAPI specs before integrating","High-volume use cases where per-request payment overhead is impractical","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.891Z"},"updatedAt":"2026-04-28T20:04:13.893Z"}}