Historical USD/ZAR forex data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical exchange rate data for the USD/ZAR (US Dollar to South African Rand) currency pair. It is part of the lowpaymentfee.com platform, which offers a suite of data, AI, finance, and utility APIs all accessible via the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers attach a USDC payment on Base (0.02 USDC per request, based on the maxAmountRequired of 20000 base units with 6 decimals) in the X-PAYMENT header. No API keys, accounts, or rate limits are required — access is purely pay-per-call. The payment is settled to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.
Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further detail. The request body schema and response format are not documented anywhere in the crawled material, so the exact parameters (e.g., date range, granularity) and response structure must be discovered experimentally. The endpoint is confirmed live via a 402 challenge response.
Capabilities
Use cases
- —Retrieving historical USD/ZAR exchange rates for financial analysis
- —Backtesting trading strategies involving the South African Rand
- —Building dashboards that display ZAR currency trends over time
- —Feeding forex data into automated agents or bots without API key management
Fit
Best for
- —Developers needing on-demand forex history without signup or API keys
- —AI agents that can settle x402 micropayments on Base
- —Applications requiring USD/ZAR historical data with minimal integration overhead
Not for
- —Real-time streaming forex data (this is a request/response endpoint)
- —Users who cannot transact USDC on the Base network
- —Bulk historical data downloads where per-request pricing would be cost-prohibitive
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/USDZAR/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation of request parameters, response schema, or usage examples. The docs pages are empty stubs. The listing is essentially a stub with only the x402 challenge metadata to work from.
Warnings
- —No request body schema documented — parameters for date range, granularity, etc. are unknown
- —No response schema or example response available
- —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no content
- —The exact data source and update frequency for USD/ZAR rates are not disclosed
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/forex/USDZAR/history
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/forex/USDZAR/history