{"id":"3ee44991-e4cb-431c-951a-80c84b3e9f33","shortId":"v2GCJA","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 `/api/v1/wire/14` is one of many pay-per-call APIs offered by lowpaymentfee.com, labeled \"Premium API Access.\" The site 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, settled in USDC on the Base network via the x402 protocol.\n\nThe specific endpoint `/api/v1/wire/14` does not have detailed documentation beyond the generic \"Premium API Access\" label. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0x8335…) on Base, which equals $0.02 given USDC's 6 decimals. No API keys or rate limits are advertised; access is gated purely by per-request micropayment. The site's docs, pricing, and README pages all resolve but contain no substantive content beyond a \"Connect wallet\" prompt, so the actual request/response schema for this particular endpoint is unknown.\n\nBecause the endpoint path (`/wire/14`) doesn't map to any of the named APIs listed on the homepage (analytics, AI, finance, utils), it is unclear what functionality this specific route provides. Agents should treat this as an opaque premium endpoint until the provider publishes more documentation.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","http-post","micropayment"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 micropayment API","USDC pay-per-call","Base network API","premium API access"],"warnings":["The endpoint path /api/v1/wire/14 does not match any documented API on the provider's homepage — its actual functionality is unknown.","All documentation pages (docs, pricing, README, api) return only a 'Connect wallet' prompt with no substantive content.","No request or response schema is available; callers cannot know what to send or what to expect back.","The provider site lists many endpoints but none appear to have detailed documentation."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/14","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/wire/14","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 USDC on Base), but the endpoint's actual functionality is completely undocumented. No request/response schema, no docs content, and the path '/wire/14' doesn't correspond to any named API on the site. Effectively a stub 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'/request':13,28 '/wire/14':207 '0.02':12,27,92,149 '000':139 '0x8335':144 '20':138 '6':153 'Base network API' 'USDC pay-per-call' 'accept':129 'access':7,22,50,120,163 'actual':194 'advertis':53,162 'agent':234 'ai':62,222 'analysi':66 'analyt':61,221 'api':6,21,43,49,119,156,216 'base':9,24,100,140,146 'beyond':115,187 'broad':55 'call':4,19,42 'catalog':56 'challeng':124 'classif':68 'confirm':125 'connect':189 'contain':183 'content':186 'convers':85 'data':60 'decim':154 'detail':113 'doc':175 'document':114,248 'doesn':208 'embed':69 'endpoint':32,58,88,108,200,205,242 'equal':148 'estim':79 'exchang':74 'feed':73 'financ':70,223 'function':229 'gas':78 'gate':165 'generat':86 'generic':117 'geocod':83 'given':150 'homepag':220 'http-post' 'infrastructur':81 'key':157 'label':47,121 'learn':64 'limit':160 'list':217 'live':128 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':46 'machin':63 'mani':38 'map':210 'micropay':171 'micropayment' 'name':215 'network':101 'offer':44 'one':36 'opaqu':240 'page':179 'particular':199 'path':206 'pay':2,17,40 'pay-per-cal':1,16,39 'pay-per-request' 'payment':134 'per':3,18,41,93,169 'per-request':168 'post':130 'premium':5,20,48,118,241 'premium API access' 'price':72,90,176 'prompt':191 'protocol':105 'provid':233,245 'publish':246 'pure':166 'quot':77 'rate':75,159 'readm':178 'request':94,131,170 'request/response':195 'requir':133 'resolv':181 'rout':232 'schema':196 'sentiment':65 'settl':95 'site':52,173 'span':59 'specif':107,231 'substant':185 'summar':67 'token':76 'treat':236 'unclear':227 'unit':141 'unknown':202 'usdc':15,30,97,143,151 'usdc-base' 'util':82,224 'valid':84 'via':10,25,102 'wallet':190 'web3':71 'x402':11,26,104,123 'x402 micropayment API' 'x402-payment'","prices":[{"id":"48047673-8a56-44b8-a440-f38bf2be6afe","listingId":"3ee44991-e4cb-431c-951a-80c84b3e9f33","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/wire/14","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:51.917Z"}],"sources":[{"listingId":"3ee44991-e4cb-431c-951a-80c84b3e9f33","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/14","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:51.917Z","lastSeenAt":"2026-04-22T13:31:59.894Z"}],"details":{"listingId":"3ee44991-e4cb-431c-951a-80c84b3e9f33","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/14 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The site lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories, all priced at $0.02/request.","source_url":"https://lowpaymentfee.com"},{"claim":"Pricing is $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.","source_url":"https://lowpaymentfee.com/api/v1/wire/14"}],"useCases":["Paying per-call for API access without API keys or subscriptions","Integrating micropayment-gated endpoints into autonomous agent workflows","Accessing premium data or services via x402 on the Base L2 network"],"bestFor":["Agents that need keyless, pay-as-you-go API access","Developers experimenting with x402 micropayment protocols","Use cases requiring low-cost per-request billing on Base"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before purchasing","High-volume consumers who need bulk pricing or subscription discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.98Z"},"updatedAt":"2026-04-22T13:31:59.894Z"}}