{"id":"89019d9b-f0a1-4f82-97fe-f47ea8d41b7d","shortId":"6aAHDy","kind":"x402","title":"Pay-per-call stock quote for NVDA via x402 on Base, settled in USDC at $0.02/request.","tagline":"Pay-per-call stock quote for NVDA via x402 on Base, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides stock data for NVIDIA (NVDA) through an x402-gated API call. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme. The advertised maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02 per request.\n\nThe provider operates a broader platform offering dozens of pay-per-call endpoints across categories including data analytics, AI/ML inference, finance/crypto market data, and utility services — all at the same $0.02 price point. The platform advertises no API keys, no rate limits, and instant access. However, documentation is extremely thin: the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further technical detail.\n\nBecause there is no OpenAPI schema, no sample request/response documentation, and no description of what fields the NVDA stock endpoint actually returns, the exact shape of the response must be discovered by making a paid call. The endpoint is confirmed live (returns a valid x402 402 challenge), but the lack of documentation means agents must operate with significant uncertainty about the response format.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stock-quote","per-call-pricing","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["NVDA stock price","NVIDIA stock data","stock quote API","equity data endpoint","x402 stock API","pay-per-call stock data","Base USDC stock API"],"warnings":["No OpenAPI or schema documentation available; response format is unknown","All documentation pages (/docs, /pricing, /README) render only 'Connect wallet' with no content","The specific endpoint is /stocks/NVDA but the provider's landing page does not list any /stocks/ endpoints — only analytics, AI, finance, crypto, and utils categories are shown","No sample responses or field descriptions available; agents must discover the schema by paying for a call"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/NVDA","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/NVDA","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 with a valid x402 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no meaningful documentation — the docs, pricing, and README pages are all blank beyond a wallet-connect prompt. The actual response format for the stocks/NVDA endpoint is 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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/NVDA","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:45.970Z"}],"sources":[{"listingId":"89019d9b-f0a1-4f82-97fe-f47ea8d41b7d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/NVDA","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:45.970Z","lastSeenAt":"2026-04-29T07:04:58.958Z"}],"details":{"listingId":"89019d9b-f0a1-4f82-97fe-f47ea8d41b7d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/NVDA \\\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 x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/NVDA"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/NVDA"},{"claim":"Platform advertises $0.02/request, no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The landing page lists endpoints across data/analytics, AI/ML, finance/web3, and infrastructure categories but does not list any /stocks/ endpoints","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching real-time or recent NVDA stock data without API key registration","Agent-driven portfolio monitoring that pays per request in USDC on Base","Integrating stock quotes into crypto-native workflows with on-chain settlement"],"bestFor":["Agents or bots that need keyless, on-demand stock data with crypto payment","Developers prototyping x402 payment flows against a live endpoint","Low-volume stock data consumers who prefer pay-per-use over subscriptions"],"notFor":["High-frequency trading requiring sub-millisecond latency and guaranteed SLAs","Users who need comprehensive documentation or OpenAPI specs before integration","Consumers who need historical bulk stock data downloads"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:40.848Z"},"updatedAt":"2026-04-29T07:04:58.958Z"}}