{"id":"0df6eab6-b8de-4550-81f5-b4ed6c4da6f8","shortId":"HH7Myt","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-call with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-call with USDC.","description":"This endpoint at `/api/v1/trades/96` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific `/api/v1/trades/96` resource is labeled \"Premium API Access\" but its exact functionality is not documented beyond that label — it does not appear in the site's publicly listed API catalog, which focuses on analytics, AI, finance, and utility endpoints.\n\nThe endpoint is live and returns a valid x402 challenge over the Base network, accepting payment in USDC (contract `0x8335…2913`) with a maximum amount of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's uniform $0.02/request pricing. Payment is made via the x402 exact scheme with no API keys or rate limits required — callers simply attach an `X-PAYMENT` header with a valid payment proof. The response MIME type is `application/json`.\n\nBecause this specific endpoint (`/trades/96`) is not listed among the site's documented APIs and no OpenAPI schema, request/response examples, or detailed documentation are available, its actual data payload and expected POST body remain unknown. The platform's docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. Prospective users should treat this as a minimally documented endpoint until more information surfaces.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","no-api-key"],"categories":["finance","data"],"synonyms":["lowpaymentfee","x402 api","pay per call api","usdc api","base network api","micropayment api","trades endpoint"],"warnings":["Endpoint /api/v1/trades/96 is not listed among the site's publicly documented APIs — its purpose and data payload are unknown.","No OpenAPI spec, request schema, or response examples are available.","All documentation pages (docs, pricing, README, api) render only a 'Connect wallet' prompt with no usable content.","The exact nature of 'Premium API Access' is undocumented; the label is generic."],"endpointUrl":"https://lowpaymentfee.com/api/v1/trades/96","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/96","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 this specific resource (/api/v1/trades/96) is not listed in the site's public catalog, has no documentation, no OpenAPI schema, no request/response examples, and the docs pages are empty. Effectively a stub with confirmed 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'/request':149 '/trades/96':190 '0.02':139,148 '000':128 '0x8335':120 '20':127 '2913':121 '6':134 'accept':115 'access':69 'actual':212 'ai':96 'ai/ml':55 'among':194 'amount':125 'analyt':54,95 'api':5,19,51,68,90,161,199 'appear':83 'application/json':185 'attach':169 'avail':210 'base':8,22,113,129 'base network api' 'base-network' 'beyond':77 'bodi':218 'call':12,26 'caller':167 'catalog':91 'challeng':110 'collect':42 'connect':233 'consist':142 'content':239 'contract':119 'data':53,213 'decim':135 'detail':207 'doc':224 'document':76,198,208,248 'endpoint':6,20,30,100,102,189,249 'exact':72,157 'exampl':205 'expect':216 'financ':97 'finance/web3':57 'focus':93 'function':73 'gate':3,17 'header':174 'infer':56 'inform':252 'infrastructur':59 'json-response' 'key':162 'label':66,79 'limit':165 'list':89,193 'live':104 'lowpaymentfee' 'lowpaymentfee.com':37 'made':153 'maximum':124 'micropayment api' 'mime':182 'minim':247 'network':114 'no-api-key' 'offer':40 'openapi':202 'page':228 'part':34 'pay':10,24,48 'pay per call api' 'pay-per-cal':9,23 'pay-per-request':47 'payload':214 'payment':116,151,173,178 'per':11,25,49,140 'platform':38,145,222 'post':217 'premium':4,18,67 'price':150,225 'prompt':235 'proof':179 'prospect':240 'protocol':46 'public':88 'rate':164 'readm':227 'remain':219 'render':230 'request':50,141 'request/response':204 'requir':166 'resourc':64 'respons':181 'return':106 'schema':203 'scheme':158 'simpli':168 'sinc':131 'site':86,196 'span':52 'specif':62,188 'surfac':253 'trades endpoint' 'translat':137 'treat':243 'type':183 'uniform':147 'unit':130 'unknown':220 'usdc':14,28,118,132 'usdc api' 'usdc-settlement' 'use':133 'user':241 'util':60,99 'valid':108,177 'via':154 'wallet':234 'x':172 'x-payment':171 'x402':2,16,45,109,156 'x402 api' 'x402-gated':1,15 'x402-payment' 'x402-protocol':44","prices":[{"id":"5ebb21f3-eca0-47c7-8146-c722eba931e7","listingId":"0df6eab6-b8de-4550-81f5-b4ed6c4da6f8","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/96","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:58:10.676Z"}],"sources":[{"listingId":"0df6eab6-b8de-4550-81f5-b4ed6c4da6f8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/trades/96","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:58:10.676Z","lastSeenAt":"2026-04-26T01:02:58.513Z"}],"details":{"listingId":"0df6eab6-b8de-4550-81f5-b4ed6c4da6f8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/trades/96 \\\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 402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/trades/96"},{"claim":"The platform advertises uniform $0.02/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/96"},{"claim":"The /api/v1/trades/96 endpoint is not listed among the site's publicly documented API catalog","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing trade-related data on a per-request payment basis without subscriptions","Integrating pay-per-call endpoints into autonomous agent workflows via x402","Programmatic access to premium data without API key management"],"bestFor":["Agents or developers wanting zero-commitment, pay-per-request API access","x402-compatible wallets and agent frameworks on Base","Use cases requiring no rate limits and instant access"],"notFor":["Users needing well-documented endpoints with clear request/response schemas","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone unable to transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:44.758Z"},"updatedAt":"2026-04-26T01:02:58.513Z"}}