Stock market quote for ISRG via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides a stock market quote for ISRG (Intuitive Surgical, Inc.) through the lowpaymentfee.com platform, which offers a variety of pay-per-call APIs settled via the x402 protocol on the Base network. Each request costs $0.02 in USDC (20,000 base units with 6 decimals), paid directly on-chain with no API keys, rate limits, or subscriptions required.
The endpoint is accessed via HTTP POST and returns JSON. It is part of a broader suite of finance and market data endpoints offered by the same provider, alongside AI/ML, analytics, infrastructure, and crypto APIs—all priced uniformly at $0.02 per call. The x402 challenge was confirmed live, advertising payment to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.
Documentation beyond the landing page is sparse—the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no further technical detail. No OpenAPI schema, example responses, or field-level documentation was found. The exact fields returned in the quote response are unknown and must be discovered by making a paid request.
Capabilities
Use cases
- —Fetching a real-time or recent stock quote for ISRG (Intuitive Surgical) without needing an API key or subscription
- —Integrating on-chain micropayment-gated market data into an autonomous trading agent
- —Building a portfolio dashboard that pays per data request rather than committing to a monthly plan
Fit
Best for
- —Agents or apps that need occasional stock quotes without subscription overhead
- —Developers experimenting with x402 pay-per-call patterns for financial data
- —On-chain workflows that want USDC-settled market data on Base
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk data
- —Users who need comprehensive historical OHLCV data or full market depth
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/market/quote/ISRG \
-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 OpenAPI schema, no example request/response, and no documentation beyond a landing page listing. The actual response format is entirely unknown.
Warnings
- —No documentation available—/docs, /pricing, /api, and /README all return only a wallet-connect prompt with no technical content.
- —Response schema is unknown; no example responses or field definitions were found.
- —The specific data source and freshness of the ISRG quote are undocumented.
- —Provider offers many diverse endpoints (AI, analytics, finance, infra) all at the same price, which may indicate a generic wrapper rather than a specialized data provider.
Citations
- —Endpoint returns HTTP 402 with x402 challenge advertising USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/market/quote/ISRG
- —Price is $0.02 per request (20000 base units USDC, 6 decimals)https://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/market/quote/ISRG
- —No API keys, no rate limits, instant access advertisedhttps://lowpaymentfee.com