{"id":"b876e24e-4289-4268-a0b1-f8d2703f9fab","shortId":"HApEaK","kind":"x402","title":"Pay-per-call stock market quote for AVGO via x402 on Base, settled in USDC.","tagline":"Pay-per-call stock market quote for AVGO via x402 on Base, settled in USDC.","description":"This endpoint provides a real-time market quote for Broadcom (AVGO) stock via the x402 payment protocol. It is part of a broader suite of pay-per-request APIs hosted at lowpaymentfee.com, covering data analytics, AI/ML inference, finance, crypto, and utility services. Each call costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.\n\nThe specific endpoint `/api/v1/market/quote/AVGO` accepts HTTP POST requests and returns JSON. Payment is handled inline via the x402 protocol: the server responds with a 402 challenge containing the USDC asset address on Base (`0x8335…2913`), and the caller attaches an `X-PAYMENT` header with a signed payment to the provider's address. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02.\n\nDocumentation on the site is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no example request/response payloads, and no description of the response format beyond the MIME type `application/json`. The endpoint is confirmed live (402 challenge captured), but the actual data source and response structure are unknown.","tags":[],"capabilities":["stock-quote","market-data","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key"],"categories":["finance","market-data"],"synonyms":["AVGO stock quote","Broadcom quote API","stock price API","equity market data","x402 finance API","pay-per-request stock data","USDC stock API"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All doc/pricing/README pages render only 'Connect wallet' with no usable content","The endpoint path suggests a stock quote for AVGO but the data source and freshness are unverified","The broader site lists many API categories but it is unclear which endpoints are fully functional"],"endpointUrl":"https://lowpaymentfee.com/api/v1/market/quote/AVGO","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/AVGO","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and all documentation pages are empty beyond a wallet-connect prompt. The actual data source and response structure must be entirely inferred from the URL 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'0.02':80,167 '000':158 '0x8335':130 '20':157 '2913':131 '402':121,219 '6':163 'AVGO stock quote' 'Broadcom quote API' 'USDC stock API' 'accept':101 'actual':224 'address':127,149 'ai/ml':70 'amount':152 'analyt':69 'api':63,88,178 'application/json':213 'asset':126 'attach':135 'avgo':9,25,44 'base':13,29,85,129,159 'base-network' 'beyond':209 'broadcom':43 'broader':56 'call':4,20,78,155 'caller':134 'captur':221 'challeng':122,220 'confirm':217 'connect':186 'contain':123 'content':192 'cost':79 'cover':67 'crypto':73 'data':68,225 'decim':164 'descript':204 'doc':176 'document':168 'endpoint':34,99,215 'equal':166 'equity market data' 'exampl':199 'extrem':173 'financ':72 'format':208 'handl':110 'header':140 'host':64 'http':102 'infer':71 'inlin':111 'json':107 'key':89 'limit':92 'live':218 'lowpaymentfee.com':66 'market':6,22,40 'market-data' 'maximum':151 'mime':211 'network':86 'no-api-key' 'openapi':196 'page':181 'part':53 'pay':2,18,60 'pay-per-cal':1,17 'pay-per-call' 'pay-per-request':59 'pay-per-request stock data' 'payload':201 'payment':49,108,139,144 'per':3,19,61,154 'post':103 'price':177 'prompt':188 'protocol':50,115 'provid':35,147 'quot':7,23,41 'rate':91 'readm':180 'real':38 'real-tim':37 'render':183 'request':62,104 'request/response':200 'requir':96,153 'respond':118 'respons':207,228 'return':106 'schema':197 'server':117 'servic':76 'settl':14,30 'sign':143 'site':171 'sourc':226 'spars':174 'specif':98 'stock':5,21,45 'stock price API' 'stock-quote' 'structur':229 'subscript':95 'suit':57 'time':39 'type':212 'unit':160 'unknown':231 'usdc':16,32,82,125,162 'usdc-settlement' 'util':75 'via':10,26,46,112 'wallet':187 'x':138 'x-payment':137 'x402':11,27,48,114 'x402 finance API' 'x402-payment'","prices":[{"id":"6662182f-6cef-47d7-be29-b39fdafb8cac","listingId":"b876e24e-4289-4268-a0b1-f8d2703f9fab","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/AVGO","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:14.912Z"}],"sources":[{"listingId":"b876e24e-4289-4268-a0b1-f8d2703f9fab","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/market/quote/AVGO","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:14.912Z","lastSeenAt":"2026-04-22T07:00:32.942Z"}],"details":{"listingId":"b876e24e-4289-4268-a0b1-f8d2703f9fab","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/market/quote/AVGO\n# Returns 402 with x402 challenge. Attach X-PAYMENT header with signed USDC payment ($0.02) on Base to receive the quote.","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 of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/market/quote/AVGO"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/market/quote/AVGO"},{"claim":"All APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching a real-time or near-real-time market quote for Broadcom (AVGO) stock","Integrating stock price data into an AI agent workflow without managing API keys","Programmatic trading or portfolio monitoring that needs on-demand equity quotes"],"bestFor":["Agents or bots that need keyless, pay-per-call stock quotes","Developers prototyping crypto-native finance applications on Base","Low-volume consumers who want no subscription commitment for market data"],"notFor":["High-frequency trading requiring sub-millisecond latency and guaranteed SLAs","Users who need bulk historical price data or full order-book depth","Anyone unable to settle payments in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:45.48Z"},"updatedAt":"2026-04-22T07:00:32.942Z"}}