Historical stock price data for WMT via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical stock price data for Walmart (WMT) through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML inference, finance, crypto, and utility endpoints — all gated behind x402 micropayments settled in USDC on the Base network.
The specific endpoint `/api/v1/stocks/WMT/history` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys are required; payment is handled entirely via the X-PAYMENT header. The provider advertises no rate limits and instant access.
Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive 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, granularity). The endpoint is confirmed live via a valid 402 challenge response, but the actual data format and query parameters must be discovered by calling the endpoint.
Capabilities
Use cases
- —Retrieving historical stock price data for Walmart (WMT) for backtesting or analysis
- —Agent-driven financial research workflows that need pay-per-call stock data without API key management
- —Building dashboards or alerts that incorporate WMT price history
Fit
Best for
- —AI agents needing on-demand stock history without subscription commitments
- —Developers who want to pay per request with crypto (USDC on Base)
- —Low-volume or sporadic access to WMT historical prices
Not for
- —High-frequency trading requiring sub-second latency and guaranteed SLAs
- —Users who need comprehensive multi-ticker coverage from a single documented API
- —Anyone requiring detailed API documentation, schemas, or support before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/stocks/WMT/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, documentation is essentially nonexistent — no OpenAPI spec, no request/response schema, no examples, and no description of what data fields or query parameters are supported. The listing is effectively a stub with confirmed liveness.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content
- —No OpenAPI or request/response schema provided; input parameters and output format are unknown
- —Stock data source, freshness, and coverage details are not disclosed
- —The broader platform lists many endpoint categories but it is unclear how mature or reliable any of them are
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/stocks/WMT/history
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/stocks/WMT/history
- —Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only 'Connect wallet' with no substantive documentationhttps://lowpaymentfee.com/docs