{"id":"80e55489-a8f3-4cae-92d7-cb270c869d15","shortId":"vJDBqS","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific resource `/api/v1/trades/113` appears to be part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated behind x402 micropayments on the Base network.\n\nThe endpoint is live and returns a valid x402 challenge. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which at 6 decimals equals $0.02 per request. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof. The timeout for payment settlement is 300 seconds.\n\nHowever, the specific functionality of `/api/v1/trades/113` is unclear. The path suggests a trade-related resource (possibly retrieving or executing a specific trade record), but no documentation, request schema, or response schema is available for this particular endpoint. The broader site lists categories like \"Finance & Web3\" with price feeds, exchange rates, token quotes, and gas estimates, so this trades endpoint likely falls within that domain. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content, leaving the actual behavior undocumented.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","no-api-key","trades-data","json-response"],"categories":["finance","web3"],"synonyms":["trade data API","x402 trades endpoint","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","crypto trades"],"warnings":["No documentation available — docs, pricing, and API pages all render only 'Connect wallet'","The specific functionality of /api/v1/trades/113 is unknown; no input or output schema provided","No OpenAPI spec, no examples, and no description beyond the generic 'Premium API Access' label","The broader platform lists many endpoints but none match the /trades/ path pattern, raising questions about what this endpoint does"],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/113","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/113","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, no request/response schema, and no explanation of what /api/v1/trades/113 actually returns. The docs pages are empty (just 'Connect wallet'). The listing is effectively a stub with confirmed liveness and 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'0.02':10,24,116 '000':108 '0x8335':98 '20':107 '2913':99 '300':151 '6':113 'Base network API' 'USDC pay-per-call' 'access':6,20,36,130 'actual':237 'advertis':121 'ai/ml':66 'amount':105 'analyt':65 'api':5,19,35,61,123,222 'appear':46 'attach':133 'avail':186 'base':8,22,80,101,109 'base-network' 'behavior':238 'behind':75 'broader':52,192 'call':60 'caller':131 'categori':195 'challeng':91 'connect':228 'content':234 'contract':97 'crypto trades' 'data':64,69 'decim':114 'doc':219 'document':179 'domain':217 'dozen':55 'endpoint':30,62,83,190,212 'equal':115 'estim':208 'exchang':202 'execut':172 'fall':214 'feed':201 'financ':197 'finance/web3':68 'function':156 'gas':207 'gate':3,17,74 'header':138 'howev':153 'infer':67 'instant':129 'json-response' 'key':124 'leav':235 'like':196,213 'limit':127 'list':194 'live':85 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':104 'micropay':77 'micropayment API' 'network':81 'no-api-key' 'offer':54 'page':223 'part':49 'particular':189 'path':162 'pay':9,23,58 'pay-per-cal':57 'pay-per-request' 'payment':40,92,137,143,148 'per':11,25,59,117 'platform':53,120 'possibl':169 'premium':4,18,34 'price':200,220 'prompt':230 'proof':144 'protocol':41 'provid':33 'quot':205 'rate':126,203 'record':176 'relat':167 'render':225 'request':12,26,118,180 'resourc':44,168 'respons':183 'retriev':170 'return':87 'schema':181,184 'second':152 'servic':72 'settl':94 'settlement':149 'simpli':132 'site':193 'span':63 'specif':43,155,174 'suggest':163 'timeout':146 'token':204 'trade':166,175,211 'trade data API' 'trade-rel':165 'trades-data' 'unclear':160 'undocu':239 'unit':110 'usdc':14,28,96 'usdc-micropayment' 'util':71 'valid':89,141 'via':37 'wallet':229 'web3':198 'within':215 'x':136 'x-payment':135 'x402':2,16,39,76,90,142 'x402 trades endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"d2b35ef2-7834-496d-bef8-cb8a43a07e54","listingId":"80e55489-a8f3-4cae-92d7-cb270c869d15","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/113","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:31.574Z"}],"sources":[{"listingId":"80e55489-a8f3-4cae-92d7-cb270c869d15","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/113","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:31.574Z","lastSeenAt":"2026-04-23T00:32:17.116Z"}],"details":{"listingId":"80e55489-a8f3-4cae-92d7-cb270c869d15","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/113 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/113"},{"claim":"The platform advertises $0.02 per request 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/113"},{"claim":"Docs, pricing, and API pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving trade-related data via a single micropayment without needing an API key","Integrating pay-per-call financial data into autonomous agent workflows","Programmatic access to trade records settled on Base L2 in USDC"],"bestFor":["Agents or bots that need keyless, pay-as-you-go API access","Developers experimenting with x402 micropayment-gated endpoints","Low-volume consumers who want no subscription or commitment"],"notFor":["High-volume production workloads where per-request pricing adds up quickly","Users who need detailed documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:46.536Z"},"updatedAt":"2026-04-23T00:32:17.116Z"}}