Historical stock data for ISRG (Intuitive Surgical) via x402 micropayment on Base.
What it does
This endpoint provides historical stock price data for ISRG (Intuitive Surgical) through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML, finance, and infrastructure endpoints, all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/stocks/ISRG/history` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment on Base. The maximum amount required per call is 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals). No API keys, rate limits, or upfront commitments are required — each request is independently paid for.
Documentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the historical stock data includes (e.g., OHLCV, date ranges, intervals). Prospective users should expect to experiment with the endpoint to discover its input parameters and output format.
Capabilities
Use cases
- —Retrieving historical price data for Intuitive Surgical (ISRG) stock
- —Building trading or backtesting models that need ISRG price history
- —Agents autonomously purchasing financial data without API key registration
- —Integrating stock history into dashboards or analytics pipelines
Fit
Best for
- —AI agents that need on-demand stock history without account setup
- —Developers wanting pay-per-call stock data with no subscription
- —x402-compatible workflows on the Base network
Not for
- —Users needing real-time streaming stock quotes
- —Bulk historical data downloads across many tickers (only ISRG path documented)
- —Users who cannot transact in USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/ISRG/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no meaningful documentation — the docs/pricing/README pages are all empty beyond a wallet connect prompt. The actual data format and supported parameters are unknown.
Warnings
- —No documentation available — /docs, /pricing, and /README pages are empty
- —No OpenAPI or JSON schema describing request parameters or response format
- —Unknown what historical data fields are returned (dates, OHLCV, intervals, etc.)
- —Only the ISRG ticker path is documented; unclear if other tickers are supported at similar paths
- —The broader platform lists many endpoint categories but specifics for stock endpoints are not documented
Citations
- —The endpoint returns a 402 x402 challenge requiring 20000 base units of USDC on Base (asset 0x8335...)https://lowpaymentfee.com/api/v1/stocks/ISRG/history
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categorieshttps://lowpaymentfee.com