{"id":"ae6b6add-3ee9-4634-aca5-93631b6740c1","shortId":"fatHTp","kind":"x402","title":"Market quote for MCO token via x402 micropayment on Base, $0.02 per request.","tagline":"Market quote for MCO token via x402 micropayment on Base, $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides a market quote for the MCO token (likely referring to MCO/MODUM or a similar crypto asset). It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/Web3, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint `/api/v1/market/quote/MCO` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, requiring a maximum payment of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.\n\nDocumentation beyond the landing page is extremely sparse; the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what fields the MCO quote returns. The endpoint likely returns standard market-quote data (price, volume, timestamp, etc.), but this is inferred from the path naming convention rather than documented.","tags":[],"capabilities":["market-quote","crypto-pricing","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["finance","crypto"],"synonyms":["MCO token price","MCO market data","crypto quote API","token price feed","MCO price lookup","x402 crypto API","micropayment market data"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or JSON schema describing request parameters or response fields.","The meaning of 'MCO' in this context is not documented; it could refer to multiple tokens.","No example responses are available to verify what data the endpoint actually returns."],"endpointUrl":"https://lowpaymentfee.com/api/v1/market/quote/MCO","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/market/quote/MCO","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge confirms the endpoint is live with clear pricing ($0.02 USDC on Base), but there is no OpenAPI schema, no documented request/response format, and all documentation pages are empty stubs. The actual data returned by the MCO quote endpoint is entirely 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'0.02':11,24,120 '000':115 '20':114 '6':125 'MCO market data' 'MCO price lookup' 'MCO token price' 'accept':95 'access':138 'advertis':129 'ai/ml':68 'analyt':67 'api':60,131,159 'asset':47 'attach':141 'base':10,23,89,116 'base-network' 'beyond':150 'broader':53 'call':59 'challeng':103 'confirm':104 'connect':168 'content':174 'convent':215 'crypto':46 'crypto quote API' 'crypto-pricing' 'data':66,202 'decim':126 'descript':186 'detail':185 'doc':158 'document':149,218 'endpoint':28,75,93,106,195 'etc':206 'exampl':182 'extrem':155 'field':189 'finance/web3':70 'header':145 'infer':69,210 'instant':137 'json':100 'key':132 'land':152 'like':39,196 'limit':135 'live':108 'lowpaymentfee.com':30,63 'market':1,14,33,200 'market-quot':199 'market-quote' 'maximum':111 'mco':4,17,37,191 'mco/modum':42 'micropay':8,21 'micropayment market data' 'name':214 'network':90 'no-api-key' 'offer':61 'openapi':178 'page':153,163 'part':50 'path':213 'pay':57 'pay-per-cal':56 'pay-per-request' 'payment':82,112,144 'per':12,25,58 'platform':78,128 'post':96 'price':160,203 'prompt':170 'protocol':83 'provid':31 'quot':2,15,34,192,201 'rate':134 'rather':216 'readm':162 'refer':40 'render':165 'request':13,26,97,148 'request/response':181 'requir':109 'return':99,193,197 'schema':179 'servic':73 'settl':84 'similar':45 'simpli':140 'sinc':122 'span':65 'spars':156 'specif':92 'standard':198 'substant':173 'suit':54 'timestamp':205 'token':5,18,38 'token price feed' 'unit':117 'usd':121 'usdc':86,119,123 'usdc-settlement' 'use':79,124 'util':72 'via':6,19 'volum':204 'wallet':169 'x402':7,20,81,102,143 'x402 crypto API' 'x402-payment'","prices":[{"id":"0e48abfc-7d7f-4758-ab0f-38ee6b248195","listingId":"ae6b6add-3ee9-4634-aca5-93631b6740c1","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/market/quote/MCO","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:35:47.589Z"}],"sources":[{"listingId":"ae6b6add-3ee9-4634-aca5-93631b6740c1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/market/quote/MCO","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:47.589Z","lastSeenAt":"2026-04-24T10:32:04.336Z"}],"details":{"listingId":"ae6b6add-3ee9-4634-aca5-93631b6740c1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/market/quote/MCO \\\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 HTTP 402 with x402 challenge requiring 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/market/quote/MCO"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/market/quote/MCO"}],"useCases":["Fetching a real-time market quote for the MCO token in an automated trading bot","Integrating MCO price data into a portfolio tracker without managing API keys","Agent-driven price lookups where per-call micropayments replace subscription billing"],"bestFor":["Developers who want keyless, pay-per-call crypto market data","AI agents that need on-demand token price quotes settled via x402","Low-volume or sporadic MCO price lookups where subscriptions are wasteful"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk pricing","Users who need comprehensive historical OHLCV data or charting APIs","Anyone needing quotes for tokens other than MCO from this specific endpoint"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:49.687Z"},"updatedAt":"2026-04-24T10:32:04.336Z"}}