{"id":"711009df-1c77-4ba0-bd20-76da5a93622f","shortId":"fHAhGa","kind":"x402","title":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/trades/177` suggests a trades-related data endpoint, though the exact response payload is not documented. The provider operates a broader platform offering Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utility APIs, all priced at $0.02 per request.\n\nPayment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge indicates 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 granted purely through per-request payment via the X-PAYMENT header. The endpoint accepts POST requests and returns application/json.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no example request/response bodies, and no description of what data the `/api/v1/trades/177` endpoint actually returns. The endpoint is confirmed live (402 challenge captured successfully).","tags":[],"capabilities":["x402-payment","per-request-billing","base-network","usdc-settlement","json-response","no-api-key","post-method"],"categories":["finance","data"],"synonyms":["trades API","premium data endpoint","pay-per-call API","x402 trades","lowpaymentfee","crypto trades data","Base USDC API"],"warnings":["No documentation available — all doc pages return only 'Connect wallet' with no content","No request or response schema provided for /api/v1/trades/177","Unknown what data the trades endpoint actually returns","No OpenAPI spec or AI plugin manifest found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/177","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/177","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via 402 challenge and pricing is clear ($0.02 USDC on Base), but there is no documentation, no schema, no example payloads, and no description of what the /trades/177 endpoint actually returns. Effectively a stub 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'/request':16,34 '0.02':15,33,90,116 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':103 '20000':111 '402':201 '6':120 'Base USDC API' 'accept':147 'access':7,25,44,130 'actual':194 'advertis':129 'ai':78 'analyt':77 'api':6,24,43,86,123,160 'application/json':152 'base':9,27,98,112 'base-network' 'bodi':184 'broader':73 'call':4,22 'captur':203 'challeng':106,202 'confirm':199 'connect':169 'content':175 'contract':102 'crawl':158 'crypto trades data' 'data':59,76,190 'decim':121 'descript':187 'doc':159 'document':68,153 'endpoint':38,60,146,193,197 'equal':115 'exact':63 'exampl':182 'extrem':155 'financ':81 'given':117 'grant':132 'header':144 'indic':107 'infrastructur':84 'json-response' 'key':124 'learn':80 'limit':127 'live':200 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':79 'maxamountrequir':109 'network':10,28,99 'no-api-key' 'offer':75 'openapi':179 'oper':71 'page':164 'path':52 'pay':2,20 'pay-per-cal':1,19 'pay-per-call API' 'payload':65 'payment':48,93,138,143 'per':3,21,91,136 'per-request':135 'per-request-billing' 'platform':74 'post':148 'post-method' 'premium':5,23,42 'premium data endpoint' 'price':88,161 'prompt':171 'protocol':13,31,49 'provid':41,70 'pure':133 'rate':126 'readm':163 'relat':58 'request':92,137,149 'request/response':183 'respons':64 'return':151,166,195 'schema':180 'settl':95 'spars':156 'specif':51 'success':204 'suggest':54 'though':61 'trade':57 'trades API' 'trades-rel':56 'unit':113 'usdc':18,36,101,118 'usdc-settlement' 'use':100 'util':85 'via':11,29,45,139 'wallet':170 'web3':82 'x':142 'x-payment':141 'x402':12,30,47,105 'x402 trades' 'x402-payment'","prices":[{"id":"857a38cd-fc15-4043-9b12-b9a0fa03c55f","listingId":"711009df-1c77-4ba0-bd20-76da5a93622f","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/177","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:39.590Z"}],"sources":[{"listingId":"711009df-1c77-4ba0-bd20-76da5a93622f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/177","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:39.590Z","lastSeenAt":"2026-04-26T07:03:05.531Z"}],"details":{"listingId":"711009df-1c77-4ba0-bd20-76da5a93622f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/177 \\\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 advertising USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/trades/177"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/177"}],"useCases":["Accessing trade-related data without subscription or API key management","Agent-driven programmatic data retrieval with per-call micropayments","Integrating pay-as-you-go financial data into automated workflows"],"bestFor":["Developers wanting zero-commitment API access with crypto micropayments","AI agents that need on-demand data without pre-registration","Users already holding USDC on Base network"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","High-volume consumers who would benefit from bulk pricing","Users without Base network USDC wallets"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:46.19Z"},"updatedAt":"2026-04-26T07:03:05.531Z"}}