Historical stock data for CSCO (Cisco) via x402 micropayment on Base, $0.02/request.
What it does
This endpoint provides historical stock price data for Cisco Systems (ticker: CSCO) 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. Payment is handled via the x402 protocol on the Base network using USDC, with each request costing $0.02.
The endpoint accepts POST requests and returns JSON. It is gated by an x402 payment challenge — callers must include an X-PAYMENT header with a valid USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). No API keys or rate limits are advertised; access is purely pay-per-call. The payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 on the Base L2 network.
Documentation is extremely sparse. The crawled docs, pricing, and API pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what parameters the POST body accepts or what fields the historical data response contains. The endpoint is confirmed live (402 challenge captured), but the lack of documentation makes it difficult to determine exact input parameters or response structure.
Capabilities
Use cases
- —Retrieving historical price data for Cisco (CSCO) stock for backtesting or analysis
- —Building automated trading or portfolio analytics pipelines that pay per query
- —Agent-driven financial research requiring on-demand stock history without API key management
Fit
Best for
- —Developers needing quick, keyless access to CSCO historical stock data
- —AI agents that can settle x402 micropayments on Base
- —Pay-as-you-go stock data consumers who want no subscriptions or commitments
Not for
- —Users needing bulk historical data downloads across many tickers (no batch endpoint documented)
- —Anyone without a Base-compatible USDC wallet or x402 client
- —Use cases requiring real-time streaming stock data
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/CSCO/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages returned only a wallet-connect prompt. The actual request parameters and response format are entirely unknown.
Warnings
- —No documentation available — docs, pricing, API, and README pages all return only a 'Connect wallet' prompt with no content.
- —No OpenAPI or schema describing request parameters or response fields.
- —Response format and available query parameters (date range, interval, etc.) are unknown — must be discovered experimentally.
- —This specific endpoint is for CSCO only; it is unclear if other tickers are available at similar paths.
Citations
- —Endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/CSCO/history
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/CSCO/history