{"id":"21a7d6d6-0f18-4c7e-9ac3-7df3c926a53f","shortId":"YubDwM","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per 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/183` is not explicitly listed on the provider's landing page among their documented API categories, so its exact functionality is unclear. The provider's site advertises a broad suite of pay-per-call APIs spanning Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The endpoint requires no API keys, advertises no rate limits, and provides instant access — the only gate is the x402 micropayment. The response MIME type is application/json.\n\nBecause the `/api/v1/wire/183` path does not appear in the provider's public API listing and no OpenAPI schema, documentation, or example responses are available for this specific route, the actual data or service it returns is unknown. The docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. Prospective callers should be aware that this is an opaque endpoint with no documented input/output schema beyond the x402 challenge metadata.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-call","json-response","no-api-key","post-method"],"categories":["api","payment"],"synonyms":["lowpaymentfee","x402 api","micropayment api","pay per call api","base usdc api","wire api","premium api"],"warnings":["The path /api/v1/wire/183 is not listed among the provider's publicly documented APIs — its purpose is unclear.","No OpenAPI spec, request schema, or response examples are available for this endpoint.","All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no useful content.","The provider site lists many API categories but none map to this specific wire/183 route."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/183","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/183","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, but the specific /api/v1/wire/183 path is not documented anywhere on the provider's site. No OpenAPI schema, no input/output examples, and all documentation pages render only a wallet-connect prompt. The actual service behind this endpoint is 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'0.02':12,28,100,137 '000':132 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':125 '20':131 '6':140 'accept':112 'access':7,23,40,155 'actual':198 'addit':221 'advertis':76,148 'ai':89 'among':61 'amount':129 'analyt':88 'api':6,22,39,64,85,146,181 'appear':175 'application/json':168 'avail':192 'awar':227 'base':9,25,120,133 'base usdc api' 'base-network' 'beyond':239 'broad':78 'call':4,20,84 'caller':224 'categori':65 'challeng':105,242 'confirm':106 'connect':216 'content':222 'contract':124 'data':87,199 'decim':141 'doc':207 'document':63,187,236 'endpoint':34,108,143,233 'equal':136 'exact':68 'exampl':189 'explicit':53 'financ':92 'function':69 'gate':158 'infrastructur':95 'input/output':237 'instant':154 'json-response' 'key':147 'land':59 'learn':91 'limit':151 'list':54,182 'live':110 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':90 'maximum':128 'metadata':243 'micropay':162 'micropayment api' 'mime':165 'network':121 'no-api-key' 'opaqu':232 'openapi':185 'page':60,211 'path':49,172 'pay':2,18,82 'pay per call api' 'pay-per-cal':1,17,81 'pay-per-call' 'payment':44,115 'per':3,13,19,29,83,101 'post':113 'post-method' 'premium':5,21,38 'premium api' 'price':98,208 'prompt':218 'prospect':223 'protocol':45 'provid':37,57,73,153,178 'public':180 'rate':150 'readm':210 'render':213 'request':14,30,102,114 'requir':144 'resourc':48 'respons':164,190 'return':203 'rout':196 'schema':186,238 'servic':201 'settl':117 'site':75 'span':86 'specif':47,195 'suit':79 'type':166 'unclear':71 'unit':134 'unknown':205 'usdc':16,32,123,138 'usdc-micropayment' 'use':122,139 'util':96 'via':10,26,41 'wallet':217 'web3':93 'wire api' 'x402':11,27,43,104,161,241 'x402 api' 'x402-payment'","prices":[{"id":"dbfd16ba-9526-4eec-b929-33a86a050316","listingId":"21a7d6d6-0f18-4c7e-9ac3-7df3c926a53f","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/183","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:53.700Z"}],"sources":[{"listingId":"21a7d6d6-0f18-4c7e-9ac3-7df3c926a53f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/183","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:53.700Z","lastSeenAt":"2026-04-22T05:31:50.285Z"}],"details":{"listingId":"21a7d6d6-0f18-4c7e-9ac3-7df3c926a53f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/183 \\\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":"The x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/wire/183"},{"claim":"The provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/183"},{"claim":"The provider lists API categories including Data & Analytics, AI & ML, Finance & Web3, and Infrastructure","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic pay-per-call access to an undocumented premium API endpoint","Agent-driven micropayment workflows on Base using USDC","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 micropayment protocol","Agents that need keyless, pay-as-you-go API access on Base","Low-cost per-request API consumption without subscriptions"],"notFor":["Users who need documented input/output schemas before calling","Production workloads requiring SLA guarantees or support","Anyone needing free or non-crypto payment options"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.88Z"},"updatedAt":"2026-04-22T05:31:50.285Z"}}