Real-time NVDA stock quote via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint provides a real-time market quote for NVDA (NVIDIA) stock, accessible via the x402 payment protocol. It is part of a broader suite of paid API endpoints hosted at lowpaymentfee.com, covering data analytics, AI/ML inference, finance, crypto, and utility services. Each request costs $0.02, paid in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The endpoint accepts HTTP POST requests and returns JSON. The x402 challenge was successfully captured, confirming the endpoint is live. The payment is settled on-chain: the maxAmountRequired is 20000 base units of USDC (6 decimals), which equals $0.02. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using the USDC contract on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no additional content. There is no OpenAPI schema, no example request/response payloads, and no description of the response format. The endpoint's actual data source for stock quotes is unknown. Users should expect a JSON response containing NVDA market data, but the exact fields and structure must be discovered empirically.
Capabilities
Use cases
- —Fetching real-time NVDA stock quotes for trading bots or dashboards
- —Integrating pay-per-call stock data into AI agents without API key management
- —Building lightweight financial applications that pay per request on Base
Fit
Best for
- —Agents or apps needing on-demand NVDA quotes without subscription overhead
- —Developers wanting keyless, pay-per-use stock data via crypto micropayments
- —Prototyping financial tools with minimal setup
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need historical OHLCV data or multi-ticker batch queries
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/market/quote/NVDA \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example request/response, and no information about the data source or response format. The listing is effectively a stub beyond the payment metadata.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README pages all return only a wallet-connect prompt with no content.
- —No OpenAPI or output schema provided; response format for the stock quote is unknown.
- —Data source for NVDA market quotes is not disclosed; accuracy and freshness cannot be verified.
- —The broader site lists many endpoints across diverse categories (AI, analytics, finance, utilities) all at $0.02 — the actual functionality behind each is unverified.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/market/quote/NVDA
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/market/quote/NVDA