{"id":"3d60c424-4093-414b-9429-0c77bb6c08a1","shortId":"w3y7xB","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 site hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network. No API keys, rate limits, or upfront commitments are required; callers simply attach an x402 payment header to each request.\n\nThe specific endpoint `/api/v1/wire/108` is listed as \"Premium API Access\" with a max amount of 20,000 base units of USDC (0.02 USDC = $0.02) per call. The x402 challenge confirms it accepts POST requests and returns `application/json`. However, the crawled site does not document what this particular wire/108 endpoint actually does — it does not appear in the publicly listed API catalog on the homepage, and the docs, pricing, and README pages all resolve to a minimal \"Connect wallet\" stub with no further documentation.\n\nWithout documentation for this specific endpoint's input parameters or response schema, callers will need to experiment or contact the provider. The site's general pattern suggests it may be one of many utility or data endpoints behind a uniform pricing model, but the exact functionality of wire/108 is unknown from available materials.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","infrastructure"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC micropayment api","base network api","premium api access"],"warnings":["The endpoint /api/v1/wire/108 does not appear in the site's public API catalog — its actual functionality is unknown.","All documentation pages (docs, pricing, README, api) resolve to a minimal 'Connect wallet' stub with no useful content.","No input parameters or response schema are documented for this endpoint.","The provider site appears to be a generic x402 API storefront; the quality and reliability of individual endpoints is unverified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/108","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/108","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and confirms pricing and network, but the specific endpoint (wire/108) has no public documentation, no input/output schema, and no examples. The docs, pricing, and README pages are all empty stubs. This is effectively a stub 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'/request':13,28 '0.02':12,27,70,121,123 '000':116 '20':115 'USDC micropayment api' 'accept':131 'access':7,22,38,109 'actual':149 'ai/ml':59 'amount':113 'analyt':58 'api':6,21,37,55,81,108,159 'appear':154 'application/json':136 'attach':92 'avail':234 'base':9,24,78,117 'base network api' 'behind':220 'broad':48 'call':4,19,54,125 'caller':90,195 'catalog':49,160 'challeng':128 'commit':87 'confirm':129 'connect':176 'contact':201 'crawl':139 'data':57,63,218 'doc':166 'document':143,182,184 'endpoint':32,102,148,188,219 'exact':227 'experi':199 'financ':61 'function':228 'general':207 'header':96 'homepag':163 'host':46 'howev':137 'infer':60 'infrastructur':65 'input':190 'json-response' 'key':82 'limit':84 'list':105,158 'lowpaymentfee' 'lowpaymentfee.com':34 'mani':215 'materi':235 'max':112 'may':211 'minim':175 'model':224 'need':197 'network':79 'no-api-key' 'one':213 'page':170 'paramet':191 'particular':146 'pattern':208 'pay':2,17,52 'pay-per-cal':1,16,51 'pay-per-call api' 'pay-per-request' 'payment':42,95 'per':3,18,53,71,124 'post':132 'post-method' 'premium':5,20,36,107 'premium api access' 'price':68,167,223 'protocol':43 'provid':35,203 'public':157 'rate':83 'readm':169 'request':72,99,133 'requir':89 'resolv':172 'respons':193 'return':135 'schema':194 'settl':73 'simpli':91 'site':45,140,205 'span':56 'specif':101,187 'stub':178 'suggest':209 'uniform':222 'unit':118 'unknown':232 'upfront':86 'usdc':15,30,75,120,122 'usdc-base-network' 'util':66,216 'via':10,25,39 'wallet':177 'web3':62 'wire/108':147,230 'without':183 'x402':11,26,41,94,127 'x402 api' 'x402-payment'","prices":[{"id":"3d2132bb-45fe-485b-b8d2-44e2869dd08a","listingId":"3d60c424-4093-414b-9429-0c77bb6c08a1","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/108","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:40.468Z"}],"sources":[{"listingId":"3d60c424-4093-414b-9429-0c77bb6c08a1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/108","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:40.468Z","lastSeenAt":"2026-04-22T10:32:30.175Z"}],"details":{"listingId":"3d60c424-4093-414b-9429-0c77bb6c08a1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/108 \\\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 x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base, equaling $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/wire/108"},{"claim":"The site 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 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is the canonical USDC contract on Base.","source_url":"https://lowpaymentfee.com/api/v1/wire/108"},{"claim":"Docs, pricing, README, and API pages all show only a 'Connect wallet' stub.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Agent-driven API consumption with per-call crypto micropayments","Accessing utility or data endpoints without API key provisioning","Programmatic pay-as-you-go access to backend services on Base"],"bestFor":["Developers or agents wanting zero-signup, pay-per-call API access","x402-compatible clients on the Base network","Low-volume or exploratory API usage without rate limits"],"notFor":["Users needing detailed documentation or guaranteed SLAs before calling","High-volume batch workloads where per-call pricing is inefficient","Users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:31.581Z"},"updatedAt":"2026-04-22T10:32:30.175Z"}}