Pay-per-call stock quote for NVDA via x402 on Base, settled in USDC at $0.02/request.
What it does
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.
The 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.
Because 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.
Capabilities
Use cases
- —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
Fit
Best for
- —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
Not for
- —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
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/NVDA \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
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 unknown.
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
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/NVDA
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/stocks/NVDA
- —Platform advertises $0.02/request, no API keys, no rate limits, instant accesshttps://lowpaymentfee.com
- —The landing page lists endpoints across data/analytics, AI/ML, finance/web3, and infrastructure categories but does not list any /stocks/ endpointshttps://lowpaymentfee.com