{"id":"265d5214-50c3-44c1-bbc2-1196c9786c9a","shortId":"xhzf4x","kind":"x402","title":"Historical stock data for MCO via x402 micropayment on Base, $0.02 per request.","tagline":"Historical stock data for MCO via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides historical stock data for the ticker MCO, served through the x402 payment protocol on the Base network. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance, crypto, and utility endpoints—all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/stocks/MCO/history` accepts POST requests and returns JSON. Payment is settled in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on the Base L2 network. The x402 challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02. The endpoint was confirmed live, returning a proper 402 challenge.\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 further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for the stocks history endpoint. The exact request body format and response structure are unknown and must be inferred or discovered by the caller.","tags":[],"capabilities":["stock-history","historical-market-data","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","MCO historical data","equity history API","stock market data","micropayment stock API","x402 finance endpoint"],"warnings":["No documentation available—/docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content.","Request body schema and response format are completely undocumented; the example_request_json is speculative.","The ticker 'MCO' is not a widely recognized stock symbol; the nature of the data returned is unclear.","No OpenAPI or machine-readable schema provided."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/MCO/history","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/stocks/MCO/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no examples, and the docs pages are empty. The request body and response structure are entirely unknown, making this effectively a stub 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'/api/v1/stocks/mco/history':88 '/docs':145 '/pricing':147 '/readme':149 '0.02':11,24,71,125 '000':115 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':101 '20':114 '402':134 '6':120 'MCO historical data' 'accept':89 'advertis':110 'ai/ml':61 'analyt':60 'api':53,76 'base':10,23,45,104,116 'base-network' 'beyond':137 'bodi':182 'broader':52 'caller':197 'challeng':109,135 'commit':83 'confirm':129 'connect':155 'content':161 'contract':100 'crypto':64 'data':3,16,32,59 'decim':121 'detail':172 'discov':194 'document':136,173 'endpoint':28,67,87,127,178 'equal':124 'equity history API' 'exact':180 'exampl':169 'extrem':142 'financ':63 'format':183 'histor':1,14,30 'histori':177 'historical-market-data' 'infer':62,192 'json':94 'key':77 'l2':105 'land':139 'limit':80 'live':130 'lowpaymentfee.com':56 'maxamountrequir':112 'mco':5,18,36 'micropay':8,21 'micropayment stock API' 'must':190 'network':46,106 'no-api-key' 'offer':58 'openapi':165 'page':140,150 'part':49 'payment':41,95 'per':12,25,72 'per-request-pricing' 'platform':54 'post':90 'price':69 'prompt':157 'proper':133 'protocol':42 'provid':29 'rate':79 'render':152 'request':13,26,73,91,181 'request/response':168 'requir':84 'respons':185 'return':93,131 'schema':166 'serv':37 'settl':97 'spars':143 'specif':86 'stock':2,15,31,176 'stock market data' 'stock price history' 'stock-history' 'structur':186 'ticker':35 'unit':117 'unknown':188 'usdc':99,123 'usdc-settlement' 'util':66 'via':6,19 'wallet':156 'x402':7,20,40,108 'x402 finance endpoint' 'x402-payment'","prices":[{"id":"5d532d64-c4bc-46d7-8ec5-c113ed846136","listingId":"265d5214-50c3-44c1-bbc2-1196c9786c9a","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/stocks/MCO/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:35:14.451Z"}],"sources":[{"listingId":"265d5214-50c3-44c1-bbc2-1196c9786c9a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/MCO/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:14.451Z","lastSeenAt":"2026-04-29T16:33:54.403Z"}],"details":{"listingId":"265d5214-50c3-44c1-bbc2-1196c9786c9a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/MCO/history \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -d '{\"ticker\": \"MCO\"}'","exampleRequest":{"ticker":"MCO"},"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 in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/MCO/history"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/MCO/history"}],"useCases":["Retrieving historical price data for MCO stock","Building financial dashboards that pull stock history on demand","Agent-driven portfolio analysis requiring per-call payment without API key management"],"bestFor":["Agents or apps needing on-demand stock history without subscription commitments","Developers who want to pay per request in USDC on Base","Low-volume or sporadic access to MCO historical data"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive multi-ticker historical data in a single call","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:51.303Z"},"updatedAt":"2026-04-29T16:33:54.403Z"}}