{"id":"f8e9c7b5-86bf-44ea-add8-ecb0a062040b","shortId":"R7jdVV","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/156` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform 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 20,000 base units (USDC has 6 decimals) equals $0.02 per call, consistent with the site's advertised pricing. The response MIME type is application/json.\n\nHowever, the specific functionality behind `/api/v1/wire/156` is not documented — it does not appear in the provider's listed API catalog, which covers analytics, AI, finance, and utility endpoints. No OpenAPI schema, request/response examples, or detailed documentation were found. The docs, pricing, API, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. Without knowing what this particular endpoint does, callers should treat it as an opaque premium endpoint whose behavior must be discovered experimentally.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["x402 api","pay per call api","usdc api","base network api","micropayment api","lowpaymentfee","wire api"],"warnings":["The specific endpoint /api/v1/wire/156 is not listed in the provider's public API catalog — its functionality is unknown.","No OpenAPI schema, request examples, or response examples are available.","All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no substantive content.","The purpose and expected input/output of this endpoint must be discovered experimentally."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/156","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/156","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 specific endpoint /api/v1/wire/156 has no documentation, no schema, no examples, and its purpose is unknown. Docs pages returned only wallet-connect prompts with no 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'/request':13,28 '0.02':12,27,80,136 '000':128 '0x1a2b':122 '0x8335':116 '20':127 '2913':117 '6':133 '85f3':123 'accept':107 'access':7,22,38 'address':121 'advertis':144 'ai':64,175 'analyt':63,174 'api':6,21,37,92,170,193 'appear':164 'application/json':151 'base':9,24,88,119,129 'base network api' 'behavior':225 'behind':156 'call':4,19,138 'caller':215 'catalog':171 'categori':60 'challeng':101 'commit':97 'confirm':102 'connect':201 'consist':139 'content':207 'contract':115 'cover':173 'data':62 'decim':134 'detail':186 'discov':228 'doc':191 'document':160,187 'endpoint':32,53,73,104,179,213,223 'equal':135 'exampl':184 'experiment':229 'financ':67,176 'found':189 'function':155 'howev':152 'includ':61 'infrastructur':70 'json-response' 'key':93 'know':209 'learn':66 'limit':95 'list':169 'live':106 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':65 'mani':52 'maxamountrequir':125 'micropayment api' 'mime':148 'must':226 'network':89 'no-api-key' 'offer':54 'one':50 'opaqu':221 'openapi':181 'page':196 'paid':83 'particular':212 'path':47 'pay':2,17 'pay per call api' 'pay-per-cal':1,16 'pay-per-request' 'payment':42,112 'per':3,18,81,137 'platform':76 'post':108 'post-method' 'premium':5,20,36,222 'price':78,145,192 'prompt':203 'protocol':43 'provid':35,57,167 'rate':94 'readm':195 'request':82,109 'request/response':183 'requir':98 'resourc':46 'respons':147 'return':198 'schema':182 'settl':111 'site':142 'span':59 'specif':45,154 'substant':206 'treat':217 'type':149 'unit':130 'usdc':15,30,85,114,131 'usdc api' 'usdc-base' 'util':71,178 'via':10,25,39 'wallet':202 'web3':68 'whose':224 'wire api' 'without':208 'x402':11,26,41,100 'x402 api' 'x402-payment'","prices":[{"id":"2291e17c-1318-4984-8339-9d9f9896431d","listingId":"f8e9c7b5-86bf-44ea-add8-ecb0a062040b","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/156","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:49.565Z"}],"sources":[{"listingId":"f8e9c7b5-86bf-44ea-add8-ecb0a062040b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/156","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:49.565Z","lastSeenAt":"2026-04-22T05:31:50.136Z"}],"details":{"listingId":"f8e9c7b5-86bf-44ea-add8-ecb0a062040b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/156 \\\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":"All endpoints priced at $0.02/request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"Payment settled in USDC on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units (=$0.02 USDC) for POST method","source_url":"https://lowpaymentfee.com/api/v1/wire/156"}],"useCases":["Programmatic access to a premium API endpoint with per-request USDC micropayments","Agent-driven workflows that need keyless, on-demand API calls settled on Base","Exploring x402 payment protocol integrations with low-cost endpoints"],"bestFor":["Developers experimenting with x402 pay-per-call protocols","Agents needing keyless API access with crypto micropayments","Low-cost per-request usage without subscriptions or rate limits"],"notFor":["Users who need detailed documentation or known endpoint behavior before calling","High-volume use cases where $0.02/request adds up without bulk discounts","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.998Z"},"updatedAt":"2026-04-22T05:31:50.136Z"}}