{"id":"c94fb6ff-626f-4e8f-9a7e-e4578dfccae6","shortId":"QkhAKw","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 provides \"Premium API Access\" via the x402 payment protocol. The specific resource `/api/v1/accounts/97` is one of many endpoints offered by the platform, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3. The maxAmountRequired of 20000 base units corresponds to $0.02 (USDC uses 6 decimals). The platform advertises a broad suite of sibling endpoints covering metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation.\n\nHowever, the specific functionality of the `/api/v1/accounts/97` endpoint is unclear — the description simply says \"Premium API Access\" with no further documentation on what data or service it returns. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available from the crawl. Agents should treat this endpoint with caution until more documentation surfaces.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","no-api-key","post-method","json-response"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 premium API","pay-per-call API","USDC API access","Base network API"],"warnings":["The specific functionality of /api/v1/accounts/97 is undocumented — 'Premium API Access' is the only description available.","No OpenAPI schema, request format, or response examples are provided.","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no substantive content.","The platform lists many sibling endpoints but none have detailed docs in the crawl."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/97","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/accounts/97","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of the /accounts/97 endpoint is undocumented. The docs pages are empty beyond a wallet-connect 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'/request':13,28 '0.02':12,27,76,128 '0x1a2b':118 '0x8335':112 '20000':123 '2913':113 '6':131 '85f3':119 'Base network API' 'USDC API access' 'accept':103 'access':7,22,38,176 'address':117 'advertis':135 'agent':222 'ai':63 'analysi':146 'analyt':62 'api':6,21,37,88,175,191 'avail':218 'base':9,24,84,115,124 'broad':137 'call':4,19 'categori':59 'caution':228 'challeng':97 'classif':149 'commit':93 'confirm':98 'connect':199 'content':205 'contract':111 'convers':157 'correspond':126 'cover':142 'crawl':221 'data':61,183 'decim':132 'descript':171 'detail':216 'doc':189 'document':180,217,231 'embed':150 'endpoint':32,52,72,100,141,167,226 'exampl':213 'exchang':153 'feed':152 'financ':66 'function':163 'generat':159 'geocod':155 'howev':160 'includ':60 'infrastructur':69 'json-response' 'key':89 'learn':65 'limit':91 'live':102 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':64 'mani':51 'maxamountrequir':121 'metric':143 'network':85 'no-api-key' 'offer':53 'one':49 'openapi':209 'page':194 'paid':79 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,108 'per':3,18,77 'platform':56,134 'post':104 'post-method' 'premium':5,20,36,174 'price':74,151,190 'prompt':201 'protocol':43 'provid':35 'rate':90,154 'readm':193 'render':196 'report':144 'request':78,105 'request/response':212 'requir':94 'resourc':46 'return':187 'say':173 'schema':210 'sentiment':145 'servic':185 'settl':107 'sibl':140 'simpli':172 'span':58 'specif':45,162 'substant':204 'suit':138 'summar':148 'surfac':232 'text':147 'treat':224 'unclear':169 'unit':125 'usdc':15,30,81,110,129 'usdc-base' 'use':130 'util':70 'valid':156 'via':10,25,39 'wallet':200 'web3':67 'x402':11,26,41,96 'x402 premium API' 'x402-payment'","prices":[{"id":"a38500ee-3c23-4237-b7b4-55df040f7b01","listingId":"c94fb6ff-626f-4e8f-9a7e-e4578dfccae6","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/accounts/97","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:21.917Z"}],"sources":[{"listingId":"c94fb6ff-626f-4e8f-9a7e-e4578dfccae6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/97","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:21.917Z","lastSeenAt":"2026-04-23T07:30:56.537Z"}],"details":{"listingId":"c94fb6ff-626f-4e8f-9a7e-e4578dfccae6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/97 \\\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":"Endpoint returns 402 with x402 challenge confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/accounts/97"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02 per request","source_url":"https://lowpaymentfee.com/api/v1/accounts/97"},{"claim":"Payment settles in USDC on Base network to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/accounts/97"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data with per-request USDC micropayments","Agent-driven API consumption without pre-registration or API keys","Programmatic pay-as-you-go access to various data and utility endpoints"],"bestFor":["Agents needing keyless, pay-per-call API access on Base","Developers wanting to test x402 payment flows with low-cost endpoints","Use cases requiring no rate limits or subscription commitments"],"notFor":["Users needing detailed documentation or guaranteed SLAs before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone requiring clarity on what the /accounts/97 endpoint specifically returns"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.279Z"},"updatedAt":"2026-04-23T07:30:56.537Z"}}