{"id":"bdf09a20-ad49-492d-96e4-d8ad0ba28649","shortId":"xbgJ3q","kind":"x402","title":"Real-time stock price data for APD (Air Products) via x402 micropayment on Base.","tagline":"Real-time stock price data for APD (Air Products) via x402 micropayment on Base.","description":"This endpoint returns the current stock price for APD (Air Products and Chemicals, Inc.) through a pay-per-request x402 protocol on the Base network. It is part of a broader suite of APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe endpoint accepts POST requests and settles payment in USDC on Base (contract 0x8335…2913). The x402 challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02 per call. Callers must include an X-PAYMENT header containing a valid x402 payment proof. The response MIME type is application/json.\n\nThe specific endpoint path `/api/v1/stocks/APD/price` suggests a pattern where the ticker symbol is embedded in the URL, and the provider likely offers similar endpoints for other stock tickers under the `/api/v1/stocks/` path. However, only the APD endpoint was probed and confirmed live. Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further technical detail.","tags":[],"capabilities":["stock-price-lookup","x402-micropayment","usdc-settlement","base-network","pay-per-request","no-api-key","real-time-data"],"categories":["finance","data"],"synonyms":["stock price API","APD stock price","Air Products stock","equity price feed","stock market data","micropayment API","x402 stock data","USDC pay-per-call"],"warnings":["No API documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content","No request or response schema documented; the actual response format for stock price data is unknown","Only the APD ticker endpoint was probed; availability of other tickers is unconfirmed","No OpenAPI or machine-readable schema provided"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/APD/price","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/APD/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and the site's docs/pricing/API pages are all empty beyond a wallet-connect prompt. The listing is largely inferred from the URL pattern and challenge 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'/api/v1/stocks/apd/price':157 '0.02':83,130 '000':120 '0x8335':110 '20':119 '2913':111 '6':125 'APD stock price' 'Air Products stock' 'USDC pay-per-call' 'accept':99 'advertis':115 'ai/ml':73 'air':9,24,40 'analyt':72 'apd':8,23,39,188 'api':65,88,206 'application/json':152 'base':15,30,55,108,121 'base-network' 'broader':62 'call':132 'caller':133 'challeng':114 'chemic':43 'commit':95 'confirm':193 'connect':212 'contain':141 'contract':109 'crypto':76 'current':35 'data':6,21,71 'decim':126 'detail':219 'doc':203 'document':195 'embed':166 'endpoint':32,98,155,176,189 'equal':129 'equity price feed' 'extrem':200 'financ':75 'header':140 'howev':185 'inc':44 'includ':135 'infer':74 'key':89 'like':173 'limit':92 'live':194 'lowpaymentfee.com':68 'maxamountrequir':117 'micropay':13,28 'micropayment API' 'mime':149 'must':134 'network':56 'no-api-key' 'offer':66,174 'page':207 'part':59 'path':156,184 'pattern':160 'pay':48 'pay-per-request':47 'payment':104,139,145 'per':49,84,131 'post':100 'price':5,20,37,81,204 'probe':191 'product':10,25,41 'prompt':214 'proof':146 'protocol':52 'provid':172 'rate':91 'real':2,17 'real-tim':1,16 'real-time-data' 'render':209 'request':50,85,101 'requir':96 'respons':148 'return':33 'servic':79 'settl':103 'similar':175 'site':198 'span':70 'spars':201 'specif':154 'stock':4,19,36,179 'stock market data' 'stock price API' 'stock-price-lookup' 'suggest':158 'suit':63 'symbol':164 'technic':218 'ticker':163,180 'time':3,18 'type':150 'unit':122 'url':169 'usdc':106,128 'usdc-settlement' 'util':78 'valid':143 'via':11,26 'wallet':213 'x':138 'x-payment':137 'x402':12,27,51,113,144 'x402 stock data' 'x402-micropayment'","prices":[{"id":"ff623977-ba98-45ca-93e1-38fcd909e217","listingId":"bdf09a20-ad49-492d-96e4-d8ad0ba28649","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/APD/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:35:33.107Z"}],"sources":[{"listingId":"bdf09a20-ad49-492d-96e4-d8ad0ba28649","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/APD/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:33.107Z","lastSeenAt":"2026-04-29T16:08:25.943Z"}],"details":{"listingId":"bdf09a20-ad49-492d-96e4-d8ad0ba28649","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/APD/price \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","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 advertising USDC payment on Base at maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/stocks/APD/price"},{"claim":"The site advertises $0.02/request pricing with no API keys, no rate limits, and 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/APD/price"}],"useCases":["Fetching the current stock price of APD (Air Products) in an automated trading or portfolio monitoring agent","Integrating real-time equity price data into a financial dashboard without managing API keys","Agent-driven stock price lookups settled via USDC micropayments on Base"],"bestFor":["AI agents needing on-demand stock price data with no subscription","Developers who want key-free, pay-per-use stock price access","Crypto-native applications that can settle in USDC on Base"],"notFor":["Bulk historical stock data downloads (no evidence of batch or historical endpoints)","Users who cannot settle payments in USDC on the Base network","High-frequency trading requiring sub-millisecond latency (no latency guarantees documented)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:50.375Z"},"updatedAt":"2026-04-29T16:08:25.943Z"}}