Historical stock data for DUK (Duke Energy) via x402 micropayment on Base, $0.02/request.
What it does
This endpoint provides historical stock price data for DUK (Duke Energy Corporation) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs covering finance, AI/ML, data analytics, and infrastructure utilities. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.
The endpoint accepts POST requests and returns JSON. No API keys or account registration are required — payment is handled inline via the X-PAYMENT header using the x402 protocol. The platform advertises no rate limits and instant access. The specific stock ticker in this endpoint is DUK, though the provider's site lists a general finance/prices endpoint as well, suggesting this may be one of many ticker-specific routes.
Documentation is extremely sparse. The provider's /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no description of request parameters, and no example responses. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is unclear what request body fields are expected or what shape the historical data response takes.
Capabilities
Use cases
- —Retrieving historical stock price data for Duke Energy (DUK) for backtesting or analysis
- —Integrating pay-per-call stock data into autonomous agent workflows without API key management
- —Building financial dashboards that pull historical equity data on demand
Fit
Best for
- —Agents needing on-demand historical stock data without subscription commitments
- —Developers who want to pay per request with crypto (USDC on Base)
- —Lightweight integrations that don't require API key provisioning
Not for
- —High-frequency trading requiring sub-second latency and guaranteed SLAs
- —Users who need comprehensive documentation or OpenAPI specs before integrating
- —Bulk historical data downloads covering many tickers at once
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/DUK/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, documentation is essentially nonexistent — no request/response schema, no parameter descriptions, no examples. The listing is largely inferred from the URL path and the homepage's generic descriptions.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content
- —No OpenAPI schema or request/response examples provided
- —Request body parameters and response format are completely unknown
- —Only the DUK ticker is represented at this endpoint; coverage of other tickers is unconfirmed
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/stocks/DUK/history
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Basehttps://lowpaymentfee.com