{"id":"340e0043-143d-4039-85d0-c45de9e2259d","shortId":"TyLu59","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 path `/api/v1/wire/86` is not explicitly listed on the provider's landing page among their named API categories, so its exact functionality is unclear. However, the provider operates a broad suite of pay-per-call APIs 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).\n\nThe endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with an \"exact\" scheme. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the provider's advertised flat pricing of $0.02/request across all endpoints. No API keys are required; access is granted immediately upon payment. The provider advertises no rate limits and no minimum commitments.\n\nDocumentation is extremely sparse. The /docs, /api, /pricing, 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 description of what `/api/v1/wire/86` specifically returns. The POST method is indicated in the outputSchema. Without knowing the expected request body or response format, agents will need to experiment or contact the provider for integration details.","tags":[],"capabilities":["x402-payment","pay-per-call","usdc-settlement","base-network","http-post","no-api-key","premium-api"],"categories":["general","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 API","pay per request API","USDC API","Base network API","micropayment API"],"warnings":["The specific endpoint /api/v1/wire/86 is not listed among the provider's named APIs — its function is unknown.","All documentation pages (/docs, /api, /pricing, /README) contain no substantive content.","No OpenAPI schema, request body format, or response examples are available.","The provider's API suite is broad but none of the individual endpoints appear to have public documentation."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/86","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/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but the specific resource /api/v1/wire/86 is undocumented. No OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet connect prompt. The exact purpose of this endpoint is 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'/api/v1/wire/86':48,223 '/docs':193 '/pricing':195 '/readme':197 '/request':13,28,163 '0.02':12,27,150,162 '000':142 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':131 '20':141 '6':147 'Base network API' 'USDC API' 'access':7,22,38,172 'across':164 'advertis':158,180 'agent':243 'ai':86 'among':59 'amount':138 'analysi':90 'analyt':85 'api':6,21,37,62,82,168 'base':9,24,126,143 'base-network' 'bodi':239 'broad':75 'call':4,19,81 'categori':63 'challeng':120 'classif':92 'commit':187 'connect':203 'consist':153 'contact':249 'content':209 'contract':130 'convers':109 'data':84 'decim':148 'descript':220 'detail':254 'document':188 'embed':93 'endpoint':32,112,166 'equal':149 'estim':103 'exact':66,134 'exampl':217 'exchang':98 'expect':237 'experi':247 'explicit':51 'extrem':190 'feed':97 'financ':94 'flat':159 'format':242 'function':67 'gas':102 'generat':110 'geocod':107 'grant':174 'howev':70 'http-post' 'immedi':175 'indic':230 'infrastructur':105 'integr':253 'key':169 'know':235 'land':57 'learn':88 'limit':183 'list':52 'live':114 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':87 'maximum':137 'method':228 'micropayment API' 'minimum':186 'name':61 'need':245 'network':127 'no-api-key' 'openapi':213 'oper':73 'outputschema':233 'page':58,198 'path':47 'pay':2,17,79 'pay per request API' 'pay-per-cal':1,16,78 'pay-per-call' 'payment':42,121,177 'per':3,18,80,151 'post':227 'premium':5,20,36 'premium-api' 'price':96,160 'prompt':205 'protocol':43 'provid':35,55,72,156,179,251 'quot':101 'rate':99,182 'render':200 'request':152,238 'request/response':216 'requir':139,171 'resourc':46 'respons':241 'return':116,225 'schema':214 'scheme':135 'sentiment':89 'settl':123 'span':83 'spars':191 'specif':45,224 'substant':208 'suit':76 'summar':91 'token':100 'unclear':69 'unit':144 'upon':176 'usdc':15,30,129 'usdc-settlement' 'use':128 'util':106 'valid':108,118 'via':10,25,39 'wallet':204 'web3':95 'without':234 'x402':11,26,41,119 'x402 API' 'x402-payment'","prices":[{"id":"107db2f8-a2c8-4633-a2c6-b3bde26eb56a","listingId":"340e0043-143d-4039-85d0-c45de9e2259d","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/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:11.362Z"}],"sources":[{"listingId":"340e0043-143d-4039-85d0-c45de9e2259d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/86","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:11.362Z","lastSeenAt":"2026-04-22T07:01:44.947Z"}],"details":{"listingId":"340e0043-143d-4039-85d0-c45de9e2259d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/86 \\\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 endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/86"},{"claim":"The provider 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 is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/86"},{"claim":"The provider lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Agents needing on-demand API access without pre-registration or API keys","Programmatic pay-per-call access settled in USDC on Base L2","Exploring a multi-category API platform (data, AI, finance, utilities) with uniform pricing"],"bestFor":["Developers or agents who want keyless, instant API access via crypto micropayments","Use cases where $0.02/call flat pricing simplifies cost estimation","x402-compatible agent wallets on the Base network"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume use cases where per-call pricing may be less economical than subscription plans","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:29.985Z"},"updatedAt":"2026-04-22T07:01:44.947Z"}}