Real-time NVDA stock price via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint returns the current stock price for NVIDIA (NVDA) through a pay-per-call x402 micropayment model. It is hosted on lowpaymentfee.com, a platform offering a variety of data, AI, finance, and utility APIs all priced at $0.02 per request, settled in USDC on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is independently paid for on-chain. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 on Base mainnet using the USDC contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.
The platform also offers endpoints for analytics, AI inference (sentiment, summarization, classification, embeddings), finance (price feeds, exchange rates, crypto quotes, gas estimates), and utilities (geocoding, validation, conversion, generation), all at the same $0.02 price point. Documentation pages exist but appear to require a wallet connection and contain no further technical detail in the crawl.
Capabilities
Use cases
- —Fetching the latest NVIDIA stock price in an automated trading bot
- —Displaying real-time NVDA price data in a dashboard without managing API keys
- —Agent-driven portfolio monitoring that pays per query with USDC on Base
- —Embedding live stock prices into AI agent workflows via x402
Fit
Best for
- —Developers wanting keyless, pay-per-call stock price data
- —AI agents that can settle micropayments on Base
- —Low-volume or bursty use cases where subscriptions are wasteful
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need historical OHLCV candle data or full market depth
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/NVDA/price \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed_x402_payment>"Endpoint
Quality
The endpoint is live (402 challenge captured) with clear pricing ($0.02 USDC on Base), but there is no OpenAPI schema, no documented request/response format, no example payloads, and the docs pages are empty beyond a wallet-connect prompt. The actual response shape for the stock price is unknown.
Warnings
- —No OpenAPI or schema documentation available — request body and response format are unknown
- —Documentation pages (/docs, /pricing, /api, /README) all render only a 'Connect wallet' prompt with no technical content
- —The specific stock endpoint (/api/v1/stocks/NVDA/price) is not listed on the homepage's API catalog, which may indicate it is undocumented or experimental
- —No information on data source, update frequency, or market hours behavior
Citations
- —Endpoint returns HTTP 402 with x402 challenge advertising USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/stocks/NVDA/price
- —maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/stocks/NVDA/price
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stocks/NVDA/price