{"id":"f91889e4-c011-48e6-a00a-aadc36a028bb","shortId":"vyVzBb","kind":"x402","title":"Pay-per-call trade data endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call trade data endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at `/api/v1/trades/30` is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3, and infrastructure utilities. All endpoints are gated via the x402 payment protocol, requiring no API keys or rate limits — callers simply attach a USDC payment on the Base network to each request.\n\nThe specific `/api/v1/trades/30` endpoint is listed under \"Premium API Access.\" Based on the x402 challenge, it accepts POST requests and charges a maximum of 20,000 base units of USDC (0x8335…on Base), which equals $0.02 per call (USDC uses 6 decimals). The endpoint returns `application/json` responses. However, the exact schema of the request body and response payload is not documented in the crawled material — the docs, pricing, and API pages all resolve to a minimal \"Connect wallet\" prompt with no further technical detail.\n\nThe broader platform advertises endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02/request price point. Without documentation on what `/api/v1/trades/30` specifically returns (e.g., trade history, order book data, or aggregated trade metrics), its exact functionality remains unclear. The endpoint is confirmed live via a valid 402 challenge.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key","trade-data"],"categories":["finance","data"],"synonyms":["trade data API","x402 trades endpoint","USDC micropayment API","lowpaymentfee trades","pay-per-call trade data","Base network API","crypto trade endpoint"],"warnings":["No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content.","The exact purpose and response schema of /api/v1/trades/30 is unknown; 'Premium API Access' is the only description provided.","No OpenAPI spec, no example requests or responses found.","The broader platform lists many endpoints but none have documented schemas or usage guides."],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/30","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/30","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation on what the endpoint actually returns, no request/response schema, and the docs/pricing/API pages are all empty beyond a wallet-connect prompt. The specific purpose of '/api/v1/trades/30' is not explained anywhere in the crawled 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'/request':17,34,213 '0.02':16,33,129,212 '000':119 '0x8335':124 '20':118 '402':246 '6':134 'Base network API' 'USDC micropayment API' 'accept':110 'access':103 'advertis':181 'aggreg':230 'ai/ml':58 'analysi':190 'analyt':57 'api':54,76,102,163 'application/json':139 'attach':83 'base':9,26,89,104,120,126 'base-network' 'bodi':148 'book':227 'broader':179 'call':4,21,131 'caller':81 'challeng':108,247 'charg':114 'classif':193 'confirm':241 'connect':170 'convers':205 'crawl':157 'crypto trade endpoint' 'data':6,23,56,186,228 'decim':135 'detail':177 'doc':160 'document':154,217 'e.g':223 'embed':194 'endpoint':7,24,36,66,97,137,182,239 'equal':128 'estim':202 'exact':143,234 'exchang':197 'export':187 'feed':196 'financ':60 'function':235 'gas':201 'gate':68 'generat':207 'geocod':203 'histori':225 'howev':141 'infer':59 'infrastructur':63 'insight':188 'json-response' 'key':77 'limit':80 'list':99 'live':242 'lowpaymentfee trades' 'lowpaymentfee.com':43 'materi':158 'maximum':116 'metric':184,232 'minim':169 'network':90 'no-api-key' 'offer':46 'order':226 'page':164 'part':40 'pay':2,19,51 'pay-per-cal':1,18 'pay-per-call trade data' 'pay-per-request':50 'payload':151 'payment':72,86 'per':3,20,52,130 'platform':44,180 'point':215 'post':111 'premium':101 'price':161,195,214 'prompt':172 'protocol':73 'quot':200 'rate':79,198 'remain':236 'report':185 'request':53,93,112,147 'requir':74 'resolv':166 'respons':140,150 'return':138,222 'schema':144 'sentiment':189 'settl':12,29 'simpli':82 'span':55 'specif':95,221 'suit':48 'summar':192 'technic':176 'text':191 'token':199 'trade':5,22,224,231 'trade data API' 'trade-data' 'unclear':237 'unit':121 'usdc':14,31,85,123,132 'usdc-settlement' 'use':133 'util':64 'valid':204,245 'via':10,27,69,243 'wallet':171 'web3':61 'without':216 'x402':11,28,71,107 'x402 trades endpoint' 'x402-payment'","prices":[{"id":"da633400-0452-4816-bf8a-ea714a740ac8","listingId":"f91889e4-c011-48e6-a00a-aadc36a028bb","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/30","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:47.962Z"}],"sources":[{"listingId":"f91889e4-c011-48e6-a00a-aadc36a028bb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/30","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:47.962Z","lastSeenAt":"2026-04-26T05:32:45.914Z"}],"details":{"listingId":"f91889e4-c011-48e6-a00a-aadc36a028bb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/30 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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/30"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/30"}],"useCases":["Fetching trade-related data on demand without subscription commitments","Integrating pay-per-call trade information into automated trading agents","Accessing financial trade data from an agent workflow using x402 micropayments"],"bestFor":["Agents needing on-demand trade data with no API key management","Developers prototyping x402 payment flows on Base","Low-volume consumers who want per-request pricing without subscriptions"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data","Users who need detailed API documentation and schema guarantees before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:45.844Z"},"updatedAt":"2026-04-26T05:32:45.914Z"}}