{"id":"d1a451e0-19f4-4a88-b65c-0267e622e62c","shortId":"MtLFGw","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. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/trades/107` falls under the platform's offerings but its exact functionality is not documented in the crawled material. The path suggests it may relate to trade data (e.g., retrieving or executing a trade record with ID 107), but this is speculative. The x402 challenge confirms the endpoint is live, accepts POST requests, requires payment of up to 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals), and returns application/json.\n\nThe platform advertises no API keys, no rate limits, and instant access. Payment is handled entirely through the x402 protocol's X-PAYMENT header. Documentation pages (/docs, /pricing, /README) all resolve but contain only a \"Connect wallet\" prompt with no substantive technical documentation, so the request/response schema for this specific endpoint is unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","json-response","no-api-key","post-method"],"categories":["finance","data"],"synonyms":["trade data API","x402 API","USDC micropayment API","lowpaymentfee","pay-per-request API","Base network API","crypto trade endpoint"],"warnings":["No documentation available — /docs, /pricing, and /README pages all show only 'Connect wallet' with no content","The exact functionality of /api/v1/trades/107 is undocumented; the 'trades' path is not listed among the platform's advertised API categories","No request or response schema is available for this endpoint","This endpoint path does not appear in the platform's own homepage listing of available APIs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/107","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/107","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 there is no documentation for this specific endpoint's request/response schema. The /docs, /pricing, and /README pages are empty stubs. The exact purpose of /api/v1/trades/107 is unclear — effectively a stub 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'/docs':201 '/pricing':202 '/readme':203 '0.02':10,28,88,165 '000':159 '107':137 '20':158 '6':169 'Base network API' 'USDC micropayment API' 'accept':150 'access':6,24,44,185 'advertis':176 'ai':75 'analyt':74 'api':5,16,23,34,43,71,178 'application/json':173 'base':8,26,96,160 'base-network' 'broad':64 'call':70 'catalog':65 'challeng':144 'confirm':145 'connect':210 'contain':207 'crawl':117 'crypto trade endpoint' 'data':73,127 'decim':170 'document':114,199,217 'e.g':128 'endpoint':38,55,84,100,147,225 'entir':189 'exact':110 'execut':131 'fall':102 'financ':78 'function':111 'gate':3,21 'given':166 'handl':188 'header':198 'host':62 'i.e':164 'id':136 'infrastructur':81 'instant':184 'json-response' 'key':17,35,179 'learn':77 'limit':182 'live':149 'lowpaymentfee' 'lowpaymentfee.com':40,59 'machin':76 'mani':54 'materi':118 'may':123 'network':97 'no-api-key' 'offer':56,107 'one':52 'page':200 'path':120 'pay':9,27,68 'pay-per-cal':67 'pay-per-call' 'pay-per-request API' 'payment':48,154,186,197 'per':11,29,69,89 'platform':60,105,175 'post':151 'post-method' 'premium':4,22,42 'price':86 'prompt':212 'protocol':49,193 'provid':41 'rate':181 'record':134 'relat':124 'request':12,30,90,152 'request/response':220 'requir':18,36,153 'resolv':205 'retriev':129 'return':172 'schema':221 'settl':91 'span':72 'specif':99,224 'specul':141 'substant':215 'suggest':121 'technic':216 'trade':126,133 'trade data API' 'unit':161 'unknown':227 'usdc':14,32,93,163,167 'usdc-settlement' 'util':82 'via':45 'wallet':211 'web3':79 'x':196 'x-payment':195 'x402':2,20,47,143,192 'x402 API' 'x402-gated':1,19 'x402-payment'","prices":[{"id":"7226dcbb-79fc-41d8-a406-c7a029f5be6b","listingId":"d1a451e0-19f4-4a88-b65c-0267e622e62c","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/107","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:24.944Z"}],"sources":[{"listingId":"d1a451e0-19f4-4a88-b65c-0267e622e62c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/107","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:24.944Z","lastSeenAt":"2026-04-26T11:32:39.967Z"}],"details":{"listingId":"d1a451e0-19f4-4a88-b65c-0267e622e62c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/107 \\\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 platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC (USD Coin) on the Base network, equating to $0.02","source_url":"https://lowpaymentfee.com/api/v1/trades/107"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /README) contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving trade-related data on a per-call payment basis without needing an API key","Integrating low-cost pay-per-request endpoints into agent workflows via x402","Accessing premium data feeds settled in USDC on the Base L2 network"],"bestFor":["Agents or developers wanting zero-signup, pay-per-call API access","Use cases requiring USDC micropayments on Base for each request","Scenarios where no rate limits and no API key management are desired"],"notFor":["Users who need detailed API documentation or well-defined request/response schemas before integrating","High-volume use cases where per-request pricing at $0.02 may be expensive compared to subscription models"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:46.923Z"},"updatedAt":"2026-04-26T11:32:39.967Z"}}