{"id":"06621a83-a10a-4196-98cf-3a7c7d7703aa","shortId":"zLnmUY","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol on the Base network. The specific resource `/api/v1/trades/95` appears to be part of a broader platform offering dozens of pay-per-call endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request settled in USDC on Base.\n\nThe x402 challenge confirms the endpoint is live and accepts exact-scheme payments of up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals), which equals $0.02. Payment is made via the X-PAYMENT header with no API keys, rate limits, or upfront commitments. The timeout for payment settlement is 300 seconds.\n\nHowever, the specific functionality behind `/api/v1/trades/95` is unclear. The path suggests a trade-related resource (possibly retrieving or executing a trade record with ID 95), but no documentation, request schema, or response schema is available beyond the generic \"Premium API Access\" label. The broader site lists categories like finance/prices, crypto/quotes, and crypto/gas, so this endpoint may relate to financial or trading data. Without concrete documentation, the exact input parameters and response format remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","trades-api","json-response"],"categories":["finance","data"],"synonyms":["trade data API","x402 trades endpoint","USDC micropayment API","Base network API","pay-per-call trade data","lowpaymentfee trades","crypto trade endpoint"],"warnings":["No documentation available — docs, pricing, and README pages all render only a 'Connect wallet' prompt with no technical content","The specific functionality of /api/v1/trades/95 is unknown; the path suggests a single trade record but no schema or description exists","No OpenAPI spec, no input/output schema beyond the generic outputSchema stub in the x402 challenge","The broader platform lists many endpoint categories but none match the /trades/ path, raising questions about what this endpoint actually returns"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/95","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/trades/95","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and the specific purpose of /api/v1/trades/95 is ambiguous. The crawled docs/pricing/README pages all returned only 'Connect wallet' with no useful 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'0.02':10,28,87,126 '000':113 '0x8335':118 '20':112 '2913':119 '300':151 '6':122 '95':178 'Base network API' 'USDC micropayment API' 'accept':104 'access':6,24,44,194 'ai/ml':77 'analyt':76 'api':5,16,23,34,43,138,193 'appear':58 'avail':188 'base':8,26,52,94,114,121 'base-network' 'behind':157 'beyond':189 'broader':64,197 'call':72 'categori':200 'challeng':97 'commit':144 'concret':217 'confirm':98 'crypto trade endpoint' 'crypto/gas':205 'crypto/quotes':203 'data':75,80,215 'decim':123 'document':181,218 'dozen':67 'endpoint':38,73,100,208 'equal':125 'exact':106,220 'exact-schem':105 'execut':172 'finance/prices':202 'finance/web3':79 'financi':212 'format':225 'function':156 'gate':3,21 'generic':191 'header':135 'howev':153 'id':177 'infer':78 'infrastructur':82 'input':221 'json-response' 'key':17,35,139 'label':195 'like':201 'limit':141 'list':199 'live':102 'lowpaymentfee trades' 'lowpaymentfee.com':40 'made':129 'may':209 'network':53 'no-api-key' 'offer':66 'paramet':222 'part':61 'path':162 'pay':9,27,70 'pay-per-cal':69 'pay-per-call trade data' 'pay-per-request' 'payment':48,108,127,134,148 'per':11,29,71,88 'platform':65 'possibl':169 'premium':4,22,42,192 'price':85 'protocol':49 'provid':41 'rate':140 'record':175 'relat':167,210 'remain':226 'request':12,30,89,182 'requir':18,36 'resourc':56,168 'respons':185,224 'retriev':170 'schema':183,186 'scheme':107 'second':152 'settl':90 'settlement':149 'site':198 'span':74 'specif':55,155 'suggest':163 'timeout':146 'trade':166,174,214 'trade data API' 'trade-rel':165 'trades-api' 'unclear':160 'unit':115 'unknown':227 'upfront':143 'usdc':14,32,92,117 'usdc-settlement' 'util':83 'via':45,130 'without':216 'x':133 'x-payment':132 'x402':2,20,47,96 'x402 trades endpoint' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"28dfa2d3-c0dc-4b65-9d40-32f542fc9d58","listingId":"06621a83-a10a-4196-98cf-3a7c7d7703aa","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/trades/95","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:58:19.509Z"}],"sources":[{"listingId":"06621a83-a10a-4196-98cf-3a7c7d7703aa","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/95","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:58:19.509Z","lastSeenAt":"2026-04-25T22:32:43.189Z"}],"details":{"listingId":"06621a83-a10a-4196-98cf-3a7c7d7703aa","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/95 \\\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 endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/trades/95"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/trades/95"}],"useCases":["Fetching trade-related data on a per-request payment basis without needing API keys","Integrating low-cost financial data into agent workflows via x402 micropayments","Programmatic access to trade records settled in USDC on Base"],"bestFor":["Agents needing keyless, pay-per-call access to trade or financial data","Developers testing x402 payment protocol integrations","Low-volume consumers who want no subscription commitments"],"notFor":["Users needing well-documented, schema-specified trade APIs with guaranteed response formats","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:44.424Z"},"updatedAt":"2026-04-25T22:32:43.189Z"}}