Real-time AUD/JPY forex exchange rate via x402 micropayment on Base network.
What it does
This endpoint provides the current AUD/JPY (Australian Dollar to Japanese Yen) foreign exchange rate. It is part of a broader suite of pay-per-request APIs hosted at lowpaymentfee.com, covering finance, analytics, AI/ML, crypto, and utility services. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.
The specific URL path `/api/v1/forex/AUDJPY/rate` is not listed on the provider's landing page, but the site does advertise a Finance & Web3 category with exchange rate endpoints (e.g., `/api/v1/finance/rates`). The forex endpoint follows the same pricing and payment pattern. Callers send a POST request with an `X-PAYMENT` header containing a valid x402 payment proof; the endpoint returns JSON with the current rate.
The provider advertises no API keys, no rate limits, and instant access. All endpoints cost $0.02 per call (20,000 base units of USDC, which has 6 decimals). Documentation pages beyond the landing page are gated behind a wallet connection, so detailed request/response schemas are not publicly available.
Capabilities
Use cases
- —Fetching the current AUD/JPY exchange rate for trading bots or portfolio dashboards
- —Embedding live forex data into financial applications without managing API keys
- —Agent-driven currency conversion workflows that pay per call via x402
Fit
Best for
- —Developers needing on-demand AUD/JPY rates without subscription commitments
- —AI agents that can settle micropayments in USDC on Base
- —Low-volume or bursty forex data consumers who prefer pay-per-use
Not for
- —High-frequency trading requiring sub-millisecond latency or bulk historical data
- —Users who need comprehensive multi-pair forex feeds in a single call
- —Anyone unable to settle USDC payments on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDJPY/rate \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and the docs pages are gated behind wallet connection. The specific forex/AUDJPY path is not listed on the landing page, so its exact behavior is inferred from URL structure and the site's general pattern.
Warnings
- —No public documentation for request body or response schema — docs pages require wallet connection
- —The /api/v1/forex/AUDJPY/rate path is not explicitly listed on the provider's landing page; it may be an undocumented or dynamically generated endpoint
- —No examples of actual response data are available; response format is unknown
Citations
- —The endpoint returns HTTP 402 with an x402 challenge accepting USDC on Base network at 20,000 base unitshttps://lowpaymentfee.com/api/v1/forex/AUDJPY/rate
- —The provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/AUDJPY/rate
- —Finance & Web3 category includes exchange rate endpointshttps://lowpaymentfee.com