Historical AUD/JPY forex data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical forex data for the AUD/JPY currency pair, accessible through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform offering a variety of pay-per-request APIs spanning data analytics, AI/ML, finance, crypto, and utility services. Each request costs $0.02 (20,000 base units of USDC on the Base network, with 6 decimals). No API keys, rate limits, or subscriptions are required — payment is handled inline via the x402 `X-PAYMENT` header.
The endpoint accepts POST requests and returns JSON. The specific schema of the request body (e.g., date range, granularity) and the response payload (e.g., OHLC candles, closing prices) are not documented in the crawled material, so the exact fields must be discovered by experimentation or by consulting the provider. The x402 challenge is live and well-formed, confirming the endpoint is operational.
The broader lowpaymentfee.com platform lists roughly 16 endpoints across finance, AI, infrastructure, and data categories, all priced uniformly at $0.02 per call. Documentation pages (/docs, /pricing, /api) returned only a "Connect wallet" prompt with no additional technical detail, so the depth of available documentation is minimal.
Capabilities
Use cases
- —Retrieving historical AUD/JPY exchange rate data for backtesting trading strategies
- —Feeding forex history into financial models or dashboards
- —Programmatic access to currency pair data without API key management
- —Agent-driven forex data retrieval with inline micropayments
Fit
Best for
- —Developers needing quick, keyless access to AUD/JPY historical data
- —AI agents that can settle x402 payments on Base
- —Low-volume or sporadic forex data consumers who prefer pay-per-use
Not for
- —High-frequency trading requiring sub-second latency or streaming feeds
- —Users who need comprehensive multi-pair forex coverage from a single well-documented API
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDJPY/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and the documentation pages are empty stubs. The actual request body format and response structure are unknown, making this effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no technical content.
- —Request body schema and response schema are completely unknown; no examples provided by the provider.
- —The specific data returned (OHLC, close prices, tick data, date ranges supported) cannot be confirmed from available material.
Citations
- —Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/forex/AUDJPY/history
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/forex/AUDJPY/history
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Platform lists ~16 endpoints across data, AI, finance, and infrastructure categorieshttps://lowpaymentfee.com