{"id":"3c5a8498-b624-441c-affd-a18e55e45503","shortId":"JbVyhs","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 path `/api/v1/wire/7` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe endpoint accepts HTTP POST requests and is gated by an x402 payment challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). There are no API keys, no rate limits, and no subscription commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the resource.\n\nThe provider's landing page lists 16 endpoints across four categories (analytics/metrics, AI inference, finance/crypto, and utility services), all at the same $0.02 price point. However, the specific functionality behind `/api/v1/wire/7` is not documented beyond the generic label \"Premium API Access.\" No OpenAPI schema, request/response examples, or detailed documentation were found in the crawl. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-request","no-api-key","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["The specific functionality of /api/v1/wire/7 is not documented — 'Premium API Access' is a generic label with no details on what data or service is returned.","All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no substantive content.","No OpenAPI schema, request body schema, or response schema is available.","The provider lists 16 endpoints on the landing page but /api/v1/wire/7 does not appear among them, making its purpose unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/7","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/7","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 402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/wire/7 is entirely undescribed beyond a generic label. The docs pages are empty 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'/request':13,28 '0.02':12,27,76,114,172 '000':110 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':103 '16':156 '20':109 '6':118 'Base network API' 'USDC micropayment API' 'accept':81 'access':7,22,38,147,190 'across':158 'ai':65,162 'amount':107 'analyt':64 'analytics/metrics':161 'api':6,21,37,123,189,206 'attach':134 'base':9,24,98,111 'behind':179 'beyond':184 'broad':60 'call':4,19 'caller':132 'catalog':61 'categori':160 'challeng':92 'commit':131 'connect':215 'content':221 'contract':102 'crawl':203 'crypto-paid API' 'data':63 'decim':119 'detail':197 'doc':205 'document':183,198 'endpoint':32,52,80,157 'exampl':195 'financ':68 'finance/crypto':164 'found':200 'four':159 'function':178 'gate':87 'generic':186 'given':115 'header':139 'host':58 'howev':175 'http':82 'http-post' 'i.e':113 'infer':163 'infrastructur':71 'key':124 'label':187 'land':153 'learn':67 'limit':127 'list':155 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':66 'mani':51 'maximum':106 'network':99 'no-api-key' 'offer':53 'one':49 'openapi':192 'page':154,210 'path':46 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,91,93,138,144 'per':3,18,77 'point':174 'post':83 'premium':5,20,36,188 'premium API access' 'price':74,173,207 'prompt':217 'proof':145 'protocol':43 'provid':35,56,151 'rate':126 'readm':209 'request':78,84 'request/response':194 'resourc':149 'return':212 'schema':193 'servic':167 'settl':95 'simpli':133 'span':62 'specif':45,177 'subscript':130 'substant':220 'unit':112 'usdc':15,30,101,116 'usdc-base-network' 'use':100 'util':72,166 'valid':142 'via':10,25,39 'wallet':216 'web3':69 'x':137 'x-payment':136 'x402':11,26,41,90,143 'x402 API' 'x402-payment'","prices":[{"id":"e9897f8b-3b40-4d14-9130-f4b3f711e0c8","listingId":"3c5a8498-b624-441c-affd-a18e55e45503","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/7","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:08.905Z"}],"sources":[{"listingId":"3c5a8498-b624-441c-affd-a18e55e45503","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/7","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:08.905Z","lastSeenAt":"2026-04-22T09:01:53.186Z"}],"details":{"listingId":"3c5a8498-b624-441c-affd-a18e55e45503","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/7 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/7"},{"claim":"All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wire/7"}],"useCases":["Accessing premium API functionality with per-request USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Integrating x402-compatible endpoints into automated pipelines without subscription overhead"],"bestFor":["Developers or agents already set up with x402 payment flows on Base","Use cases requiring low-cost, no-commitment API calls","Crypto-native applications that prefer on-chain settlement over traditional billing"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","Applications requiring high-throughput batch processing where per-call fees add up","Anyone without a Base-compatible USDC wallet or x402 client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.157Z"},"updatedAt":"2026-04-22T09:01:53.186Z"}}