{"id":"ec46df1b-b00e-4fdc-adb9-d5c92d5fca7b","shortId":"DwSGw6","kind":"x402","title":"x402-gated premium API access on Base network, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base network, pay $0.02 per request in USDC.","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/124` appears to be part of a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities—all priced at $0.02 per request paid in USDC (USD Coin) on Base.\n\nThe endpoint accepts POST requests and returns application/json responses. Payment is settled on-chain using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). The x402 challenge specifies a maxAmountRequired of 20000 base units, which equals $0.02 given USDC's 6 decimals. No API keys or rate limits are advertised—access is purely pay-per-call via the x402 header.\n\nThe specific functionality of `/api/v1/trades/124` is unclear from available documentation. The path suggests it may return trade data for a specific trade ID (124), possibly related to the Finance & Web3 category listed on the site. However, no detailed schema or documentation for this particular endpoint was found in the crawl. The platform advertises no minimums, no commitments, and instant access.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["finance","data"],"synonyms":["trade data API","x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","crypto trade endpoint"],"warnings":["No documentation available for /api/v1/trades/124 specifically—purpose inferred from URL path only","No request or response schema provided","Docs, API, pricing, and README pages all returned only 'Connect wallet' with no useful content","The endpoint path suggests a single trade resource (ID 124) which may be a demo or placeholder"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/124","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/124","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for what /api/v1/trades/124 actually returns, no request/response schema, and the crawled docs pages were empty. The specific functionality of this endpoint is 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'0.02':11,26,78,121 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':106 '124':169 '20000':116 '6':125 'Base network API' 'USDC micropayment API' 'accept':90 'access':6,21,38,135,205 'advertis':134,198 'ai':67 'analyt':66 'api':5,20,37,62,128 'appear':52 'application/json':95 'avail':154 'base':8,23,46,87,108,117 'base-network' 'broader':58 'call':141 'categori':63,176 'chain':102 'challeng':111 'coin':85 'commit':202 'contract':105 'crawl':195 'crypto trade endpoint' 'data':65,163 'decim':126 'detail':183 'document':155,186 'endpoint':32,89,190 'equal':120 'financ':70,174 'found':192 'function':148 'gate':3,18 'given':122 'header':145 'howev':181 'id':168 'includ':64 'infrastructur':73 'instant':204 'json-response' 'key':129 'learn':69 'limit':132 'list':177 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'maxamountrequir':114 'may':160 'minimum':200 'multipl':61 'network':9,24,47 'offer':60 'on-chain':100 'paid':81 'part':55 'particular':189 'path':157 'pay':10,25,139 'pay-per-cal':138 'pay-per-call API' 'pay-per-request' 'payment':42,97 'per':12,27,79,140 'platform':59,197 'possibl':170 'post':91 'post-method' 'premium':4,19,36 'price':76 'protocol':43 'provid':35 'pure':137 'rate':131 'relat':171 'request':13,28,80,92 'resourc':50 'respons':96 'return':94,161 'schema':184 'settl':99 'site':180 'specif':49,147,166 'specifi':112 'suggest':158 'trade':162,167 'trade data API' 'unclear':152 'unit':118 'usd':84 'usdc':15,30,83,104,123 'usdc-settlement' 'use':103 'util':74 'via':39,142 'web3':71,175 'x402':2,17,41,110,144 'x402 API' 'x402-gated':1,16 'x402-payment'","prices":[{"id":"9e766562-e83b-4665-908d-9d1a10197ff5","listingId":"ec46df1b-b00e-4fdc-adb9-d5c92d5fca7b","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/124","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:29.749Z"}],"sources":[{"listingId":"ec46df1b-b00e-4fdc-adb9-d5c92d5fca7b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/124","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:29.749Z","lastSeenAt":"2026-04-26T10:03:23.790Z"}],"details":{"listingId":"ec46df1b-b00e-4fdc-adb9-d5c92d5fca7b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/124 \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/trades/124"},{"claim":"Platform 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 on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/trades/124"}],"useCases":["Fetching trade data on-demand without API key registration","Agent-driven programmatic access to financial trade information","Micropayment-gated data retrieval for automated workflows"],"bestFor":["Agents needing keyless, instant API access via crypto micropayments","Developers wanting pay-per-use trade data without subscriptions","x402-compatible clients on the Base network"],"notFor":["Users who need free or subscription-based access","High-volume batch processing where per-call fees add up","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:46.698Z"},"updatedAt":"2026-04-26T10:03:23.790Z"}}