{"id":"6f09d74d-10d2-46fe-8891-82d03677b529","shortId":"NDN4NY","kind":"x402","title":"Pay-per-call stock data for ticker MMM via x402 on Base, settled in USDC.","tagline":"Pay-per-call stock data for ticker MMM via x402 on Base, settled in USDC.","description":"This endpoint at lowpaymentfee.com provides stock data for the ticker MMM (3M Company) through an x402 payment-gated API. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The endpoint accepts POST requests and returns JSON.\n\nThe provider, lowpaymentfee.com, hosts a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced uniformly at $0.02 per request. This specific endpoint sits under the finance category and serves stock-level data for the MMM ticker symbol. The x402 challenge is live and well-formed, advertising payment to a USDC contract on Base (asset 0x8335…2913) with a max amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).\n\nDocumentation is extremely sparse. The crawled docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of what fields the stock data response contains. Buyers should expect to experiment or contact the provider for schema details.","tags":[],"capabilities":["stock-data","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["stock quote API","MMM stock data","3M stock price","equity data endpoint","x402 stock API","pay-per-call finance API","USDC stock data"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content","No example responses or field definitions for the /stocks/MMM endpoint","The broader site lists many endpoints but none appear to have public documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/MMM","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/MMM","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no documented request/response schema, no example payloads, and all doc pages render only a wallet-connect prompt. The listing is effectively a stub with a working payment 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'000':156 '0x8335':148 '20':155 '2913':149 '3M stock price' '3m':44 '6':164 'MMM stock data' 'USDC stock data' 'accept':75 'advertis':139 'ai/ml':97 'amount':153 'analyt':96 'api':52,64,93,175 'asset':147 'base':13,29,61,146,157 'base-network' 'broad':86 'buyer':209 'call':4,20,92 'catalog':87 'categori':118 'challeng':132 'compani':45 'connect':181 'contact':215 'contain':208 'contract':144 'cost':55 'crawl':171 'crypto':100 'data':6,22,39,95,124,206 'decim':165 'descript':200 'detail':188,220 'doc':172 'document':166 'endpoint':34,74,113 'equity data endpoint' 'exampl':195 'expect':211 'experi':213 'extrem':168 'field':203 'financ':99,117 'form':138 'gate':51 'given':161 'host':84 'i.e':159 'infer':98 'json':80 'json-response' 'key':65 'level':123 'limit':68 'live':134 'lowpaymentfee.com':36,83 'max':152 'mmm':9,25,43,127 'network':62 'no-api-key' 'openapi':192 'page':176 'pay':2,18,90 'pay-per-cal':1,17,89 'pay-per-call' 'pay-per-call finance API' 'payload':197 'payment':50,140 'payment-g':49 'per':3,19,91,109 'post':76 'price':105,173 'prompt':183 'provid':37,82,217 'rate':67 'render':178 'request':54,77,110 'request/response':196 'requir':72 'respons':207 'return':79 'schema':219 'serv':120 'servic':103 'settl':14,30 'sit':114 'span':94 'spars':169 'spec':193 'specif':112 'stock':5,21,38,122,205 'stock quote API' 'stock-data' 'stock-level':121 'subscript':71 'symbol':129 'technic':187 'ticker':8,24,42,128 'uniform':106 'unit':158 'usdc':16,32,58,143,162 'usdc-settlement' 'util':102 'via':10,26 'wallet':182 'well':137 'well-form':136 'x402':11,27,48,131 'x402 stock API' 'x402-payment'","prices":[{"id":"762706f9-2e57-40e8-8897-4cdd2ee61e17","listingId":"6f09d74d-10d2-46fe-8891-82d03677b529","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/MMM","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:33:04.869Z"}],"sources":[{"listingId":"6f09d74d-10d2-46fe-8891-82d03677b529","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/MMM","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:04.869Z","lastSeenAt":"2026-04-23T20:01:24.929Z"}],"details":{"listingId":"6f09d74d-10d2-46fe-8891-82d03677b529","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/MMM \\\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":"Endpoint returns HTTP 402 with x402 challenge advertising USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/MMM"},{"claim":"Max amount required is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/stocks/MMM"},{"claim":"Site advertises $0.02/request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/MMM"}],"useCases":["Fetching current or recent stock data for 3M (MMM) in an automated trading or analytics pipeline","Integrating low-cost, keyless stock lookups into an AI agent workflow","Prototyping financial dashboards without committing to a subscription data provider"],"bestFor":["Agents or bots that need on-demand stock data without managing API keys","Developers who want crypto-native, per-call billing for financial data","Low-volume or sporadic stock data consumers who don't want subscriptions"],"notFor":["High-frequency trading requiring sub-millisecond latency and guaranteed SLAs","Users who need comprehensive historical OHLCV data with documented schemas","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:04:01.98Z"},"updatedAt":"2026-04-23T20:01:24.929Z"}}