{"id":"f1671f8e-7d12-4130-ae93-d9204ecf9201","shortId":"EkNdJp","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-request 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.\n\nThe specific endpoint `/api/v1/wire/152` is listed as \"Premium API Access\" and accepts POST requests. The x402 challenge confirms it is live, requiring a maximum of 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals → $0.02) per call. Payment is made via the x402 `exact` scheme to the payTo address. No API keys or rate limits are advertised; access is gated purely by per-request micropayment.\n\nHowever, the actual functionality behind this particular `/api/v1/wire/152` endpoint is unclear. The site's landing page lists many named endpoints (metrics, sentiment analysis, summarization, geocoding, etc.) but does not specifically describe what `wire/152` returns. The docs, pricing, and README pages all rendered only a \"Connect wallet\" prompt with no additional documentation. Without a schema for the request body or a sample response, the concrete capability of this endpoint cannot be confirmed from available materials.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","post-endpoint","micropayment-gated"],"categories":["api-marketplace","payments"],"synonyms":["lowpaymentfee","x402 api","micropayment api","pay-per-call api","USDC api access","base network api","wire 152"],"warnings":["The actual functionality of /api/v1/wire/152 is unknown — no documentation or schema is available.","All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' prompt with no useful content.","No OpenAPI spec, no request body schema, and no example responses are available.","The site lists many endpoints but wire/152 does not appear in the public catalog — its purpose is unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/152","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/152","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 request/response schema, and no indication of what this specific endpoint actually does beyond the generic label \"Premium API Access\". The docs and other pages returned only wallet-connect prompts with no 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'/request':13,28 '0.02':12,27,70,117 '000':106 '0x8335':111 '20':105 '2913':112 '6':115 'USDC api access' 'accept':91 'access':7,22,38,89,140 'actual':151 'addit':198 'address':131 'advertis':139 'ai/ml':59 'analysi':171 'analyt':58 'api':6,21,37,55,88,133 'avail':221 'base':9,24,78,107,114 'base network api' 'behind':153 'bodi':206 'broad':48 'call':4,19,119 'cannot':217 'capabl':213 'catalog':49 'challeng':96 'concret':212 'confirm':97,219 'connect':193 'data':57,63 'decim':116 'describ':179 'doc':184 'document':199 'endpoint':32,82,157,168,216 'etc':174 'exact':126 'financ':61 'function':152 'gate':142 'geocod':173 'host':46 'howev':149 'infer':60 'infrastructur':65 'key':134 'land':163 'limit':137 'list':85,165 'live':100 'lowpaymentfee' 'lowpaymentfee.com':34 'made':122 'mani':166 'materi':222 'maximum':103 'metric':169 'micropay':148 'micropayment api' 'micropayment-gated' 'name':167 'network':79 'page':164,188 'particular':155 'pay':2,17,52 'pay-per-cal':1,16 'pay-per-call api' 'pay-per-request':51 'payment':42,120 'payto':130 'per':3,18,53,71,118,146 'per-request':145 'post':92 'post-endpoint' 'premium':5,20,36,87 'price':68,185 'prompt':195 'protocol':43 'provid':35 'pure':143 'rate':136 'readm':187 'render':190 'request':54,72,93,147,205 'requir':101 'respons':210 'return':182 'sampl':209 'schema':202 'scheme':127 'sentiment':170 'settl':73 'site':45,161 'span':56 'specif':81,178 'summar':172 'unclear':159 'unit':108 'usdc':15,30,75,110 'usdc-base' 'util':66 'via':10,25,39,123 'wallet':194 'web3':62 'wire 152' 'wire/152':181 'without':200 'x402':11,26,41,95,125 'x402 api' 'x402-payment'","prices":[{"id":"4753a4fc-b72f-48a9-ad4b-48fe873eb39d","listingId":"f1671f8e-7d12-4130-ae93-d9204ecf9201","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/152","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:28:51.322Z"}],"sources":[{"listingId":"f1671f8e-7d12-4130-ae93-d9204ecf9201","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/152","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:28:51.322Z","lastSeenAt":"2026-04-22T02:31:40.617Z"}],"details":{"listingId":"f1671f8e-7d12-4130-ae93-d9204ecf9201","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/152 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/wire/152"},{"claim":"All listed APIs 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 address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/wire/152"}],"useCases":["Programmatic access to a premium API endpoint with no API key or subscription required","Agent-driven workflows that need on-demand, pay-as-you-go API calls settled in USDC on Base","Testing x402 micropayment integrations against a live endpoint"],"bestFor":["Developers or agents wanting zero-commitment, per-request API access","x402-compatible wallets and agent frameworks on Base","Use cases where avoiding API key management is valuable"],"notFor":["Users who need detailed documentation or guaranteed SLAs before calling","High-volume batch processing where per-request pricing may add up","Anyone unable to pay in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.997Z"},"updatedAt":"2026-04-22T02:31:40.617Z"}}