{"id":"26d19484-ac34-4662-ab3b-a2bea9105169","shortId":"K35uAV","kind":"x402","title":"CME earnings data via pay-per-request x402 on Base (USDC, $0.02/call).","tagline":"CME earnings data via pay-per-request x402 on Base (USDC, $0.02/call).","description":"This endpoint at lowpaymentfee.com provides CME (Chicago Mercantile Exchange) earnings data through a simple HTTP POST request, paid per-call using the x402 protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The payment is settled on-chain via an exact-scheme x402 challenge.\n\nThe endpoint is part of a broader suite of finance and Web3 APIs offered by lowpaymentfee.com, which also includes price feeds, exchange rates, token quotes, and gas estimates, all at the same $0.02 per-request price point. The platform advertises instant access with no minimums or commitments.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all resolve to a minimal \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no example request/response payloads, and no description of what fields the CME earnings endpoint accepts or returns. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual data format and coverage remain unknown.","tags":[],"capabilities":["cme-earnings-data","finance-api","x402-payment","usdc-base-network","pay-per-request","no-api-key"],"categories":["finance"],"synonyms":["CME earnings","Chicago Mercantile Exchange earnings","financial earnings API","CME financial data","market earnings data","x402 finance endpoint"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages are all empty stubs","No request or response schema provided; input parameters and output format are unknown","CME earnings data scope and freshness are unverified","Financial data endpoint with no stated data source, accuracy guarantees, or SLA"],"endpointUrl":"https://lowpaymentfee.com/api/v1/finance/CME/earnings","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/finance/CME/earnings","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, confirming it accepts payments. However, there is no OpenAPI schema, no documented request/response format, no examples, and all documentation pages are empty stubs. The actual data content and coverage of CME earnings is entirely 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'/call':14,28 '/docs':141 '/pricing':142 '/readme':145 '0.02':13,27,57,120 '402':190 'CME earnings' 'CME financial data' 'Chicago Mercantile Exchange earnings' 'accept':179 'access':130 'actual':195 'advertis':128 'also':105 'api':65,100 'base':11,25,62 'broader':94 'call':49 'chain':80 'challeng':87,192 'chicago':35 'cme':1,15,34,176 'cme-earnings-data' 'commit':135 'confirm':185 'connect':152 'cost':56 'coverag':199 'data':3,17,39,196 'descript':171 'detail':159 'document':136 'earn':2,16,38,177 'endpoint':30,89,178,183 'estim':115 'exact':84 'exact-schem':83 'exampl':166 'exchang':37,109 'extrem':138 'feed':108 'field':174 'financ':97 'finance-api' 'financial earnings API' 'format':197 'gas':114 'http':43 'includ':106 'instant':129 'key':66 'limit':69 'live':186 'lowpaymentfee.com':32,103 'market earnings data' 'mercantil':36 'minim':151 'minimum':133 'network':63 'no-api-key' 'offer':101 'on-chain':78 'openapi':163 'page':146 'paid':46 'part':91 'pay':6,20 'pay-per-request':5,19 'payload':168 'payment':75 'per':7,21,48,122 'per-cal':47 'per-request':121 'platform':127 'point':125 'post':44 'price':107,124 'prompt':154 'proper':189 'protocol':53 'provid':33 'quot':112 'rate':68,110 'remain':200 'request':8,22,45,55,123 'request/response':167 'requir':73 'resolv':148 'return':181,187 'schema':164 'scheme':85 'settl':77 'simpl':42 'spars':139 'subscript':72 'suit':95 'technic':158 'token':111 'unknown':201 'usdc':12,26,59 'usdc-base-network' 'use':50 'via':4,18,81 'wallet':153 'web3':99 'x402':9,23,52,86,191 'x402 finance endpoint' 'x402-payment'","prices":[{"id":"419cd173-40a1-4bd5-86a4-8ac3fe49f1ec","listingId":"26d19484-ac34-4662-ab3b-a2bea9105169","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/finance/CME/earnings","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:57.722Z"}],"sources":[{"listingId":"26d19484-ac34-4662-ab3b-a2bea9105169","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/finance/CME/earnings","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:57.722Z","lastSeenAt":"2026-05-01T17:33:24.260Z"}],"details":{"listingId":"26d19484-ac34-4662-ab3b-a2bea9105169","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/finance/CME/earnings \\\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 x402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/finance/CME/earnings"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/finance/CME/earnings"}],"useCases":["Retrieving CME earnings data for financial analysis","Integrating CME earnings into automated trading or research pipelines","Agent-driven on-demand financial data retrieval without API key management"],"bestFor":["Developers needing quick, keyless access to CME earnings data","AI agents that can pay per-call via x402/USDC on Base","Users who want pay-as-you-go financial data without subscriptions"],"notFor":["Users needing comprehensive CME market data with documented schemas and SLAs","High-volume consumers who need bulk pricing or rate-limited guarantees","Anyone requiring detailed API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.231Z"},"updatedAt":"2026-05-01T17:33:24.260Z"}}