{"id":"58f117f1-fd4b-4dc7-be83-7a8b7d2cb792","shortId":"2rHuYU","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 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, payable in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/wire/24` is labeled \"Premium API Access\" but its exact functionality is not documented beyond that title. The x402 challenge confirms it accepts POST requests, settles in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, and charges a maximum of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nThe platform advertises instant access with no authentication beyond the x402 payment header. Documentation pages exist but appear gated behind a wallet connection, so detailed request/response schemas are not publicly available. Without knowing what `/api/v1/wire/24` specifically returns, agents should treat this as a generic premium endpoint whose actual payload is undocumented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-method"],"categories":["infrastructure","api-gateway"],"synonyms":["x402 API","pay-per-call API","USDC micropayment endpoint","Base network API","lowpaymentfee","wire endpoint","crypto-paid API"],"warnings":["The exact functionality of /api/v1/wire/24 ('Premium API Access') is undocumented","Documentation pages require wallet connection and provide no public content","No request body schema or response schema available","Cannot verify what data or service is actually returned after payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/24","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/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this specific endpoint does, no request/response schema, and docs pages are gated behind wallet connection. The listing is effectively a stub with confirmed 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'/request':16,34 '0.02':15,33,79,144 '000':140 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':156 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':131 '20':139 '300':159 '6':148 'Base network API' 'USDC micropayment endpoint' 'accept':124 'access':7,25,44,108,166 'actual':209 'address':155 'advertis':164 'agent':199 'ai':66 'analyt':65 'api':6,24,43,91,107 'appear':179 'authent':169 'avail':192 'base':9,27,87,133,141 'base-network' 'behind':181 'beyond':116,170 'call':4,22 'categori':62 'challeng':121 'charg':135 'commit':98 'confirm':122 'connect':184 'contract':130 'crypto-paid API' 'data':64 'decim':149 'detail':186 'document':115,175 'endpoint':38,55,75,102,207 'exact':111 'exist':177 'financ':69 'function':112 'gate':180 'generic':205 'given':145 'header':174 'i.e':143 'includ':63 'infrastructur':72 'instant':165 'key':92 'know':194 'label':105 'learn':68 'limit':95 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':67 'mani':54 'maximum':137 'network':10,28,88 'no-api-key' 'offer':56 'one':52 'page':176 'pay':2,20 'pay-per-cal':1,19 'pay-per-call API' 'pay-per-request' 'payabl':82 'payload':210 'payment':48,151,173 'per':3,21,80 'platform':59,163 'post':125 'post-method' 'premium':5,23,42,106,206 'price':77 'protocol':13,31,49 'provid':41 'public':191 'rate':94 'request':81,126 'request/response':187 'requir':99 'return':198 'schema':188 'second':160 'sent':153 'settl':127 'span':61 'specif':101,197 'timeout':161 'titl':118 'treat':201 'undocu':212 'unit':142 'usdc':18,36,84,129,146 'usdc-settlement' 'util':73 'via':11,29,45 'wallet':183 'web3':70 'whose':208 'wire endpoint' 'without':193 'x402':12,30,47,120,172 'x402 API' 'x402-payment'","prices":[{"id":"481d1f1d-ba1f-4559-a18c-14cdb456c704","listingId":"58f117f1-fd4b-4dc7-be83-7a8b7d2cb792","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/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:59.817Z"}],"sources":[{"listingId":"58f117f1-fd4b-4dc7-be83-7a8b7d2cb792","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/24","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:59.817Z","lastSeenAt":"2026-04-22T10:32:31.069Z"}],"details":{"listingId":"58f117f1-fd4b-4dc7-be83-7a8b7d2cb792","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/24 \\\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":"Platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge confirms USDC payment of 20000 base units (=$0.02) on Base to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/wire/24"}],"useCases":["Accessing premium data or services without traditional API key registration","Making one-off paid API calls settled instantly on Base L2","Integrating pay-per-use endpoints into autonomous agent workflows"],"bestFor":["Agents needing keyless, instant API access via crypto micropayments","Developers experimenting with x402 protocol integrations","Use cases requiring no rate limits and no subscription commitments"],"notFor":["Users who need detailed documentation or guaranteed SLAs before calling","Applications requiring non-crypto payment methods","Anyone needing to understand the exact response schema before paying"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.586Z"},"updatedAt":"2026-04-22T10:32:31.069Z"}}