Real-time stock price data for ISRG (Intuitive Surgical) via x402 micropayment on Base.
What it does
This endpoint returns the current stock price for ISRG (Intuitive Surgical) through a pay-per-request x402 protocol. It is hosted on lowpaymentfee.com, a platform offering a broad catalog of x402-gated APIs spanning finance, AI/ML, data analytics, and utility services. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The specific endpoint at `/api/v1/stocks/ISRG/price` accepts POST requests and returns JSON. Payment is handled inline via the x402 `X-PAYMENT` header using the "exact" scheme, settling in USDC (contract `0x8335…2913`) on Base. The x402 challenge confirms the endpoint is live and advertises a max amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals).
The provider's landing page lists many other endpoints across finance, crypto, AI, and infrastructure categories, all at the same $0.02 per-call price point. Documentation pages beyond the landing page were largely empty (showing only a "Connect wallet" prompt), so details about request/response schemas, supported parameters, or error handling are not available from the crawl. The endpoint appears to be part of a broader stock-price API family (the ticker "ISRG" is embedded in the URL path), but it is unclear whether other tickers are supported at similar paths.
Capabilities
Use cases
- —Fetching the current stock price of ISRG (Intuitive Surgical) programmatically
- —Building trading bots or dashboards that need real-time equity prices without API key management
- —Agent-driven financial research workflows that pay per query on Base
Fit
Best for
- —Developers needing quick, keyless access to ISRG stock price data
- —AI agents that can settle x402 micropayments on Base
- —Low-volume or sporadic stock price lookups where subscriptions are overkill
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk ticker coverage
- —Users who need historical OHLCV or detailed fundamentals data (not evidenced here)
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/ISRG/price \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge is live and confirms pricing and payment details, but documentation pages are empty stubs. No request/response schema, no example payloads, and no details on what fields the stock price response contains. The endpoint's purpose is inferable from the URL path and provider landing page, but specifics are missing.
Warnings
- —Documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no actual content
- —No response schema or example response is available — the shape of the returned stock price data is unknown
- —It is unclear whether other stock tickers beyond ISRG are supported at similar URL paths
- —No OpenAPI spec or ai-plugin manifest was found
Citations
- —The endpoint returns HTTP 402 with an x402 challenge advertising $0.02 (20000 base units USDC) on Basehttps://lowpaymentfee.com/api/v1/stocks/ISRG/price
- —The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Basehttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/ISRG/price