AUD/JPY forex rate via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides AUD/JPY (Australian Dollar to Japanese Yen) foreign exchange rate data, accessible via the x402 payment protocol on the Base network. Each request costs $0.02, paid in USDC (USD Coin) with no API keys, rate limits, or subscriptions required.
The endpoint is part of a broader suite of APIs offered at lowpaymentfee.com, which spans finance, data analytics, AI/ML, and utility categories — all priced at $0.02 per call. The forex endpoint specifically lives under the finance vertical alongside price feeds, exchange rates, and crypto quotes. Payment is settled on-chain on Base using USDC (contract 0x8335…2913) to the provider's wallet.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The endpoint is confirmed live (returns a proper 402 x402 challenge on POST), but the actual response format and accepted request parameters are unknown. Users should expect a JSON response (mimeType is application/json) but will need to experiment to determine the exact shape of the data returned.
Capabilities
Use cases
- —Fetching the current AUD/JPY exchange rate for trading bots or dashboards
- —Incorporating live forex data into financial applications without API key management
- —Programmatic access to currency pair pricing with per-request micropayments
Fit
Best for
- —Agents or bots needing on-demand forex rates without subscriptions
- —Developers who want keyless, pay-per-use currency data
- —x402-native applications settling payments on Base
Not for
- —High-frequency trading requiring sub-millisecond latency (on-chain payment adds overhead)
- —Users needing historical forex time-series data (no evidence this is supported)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDJPY \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 x402 challenge, and pricing is clear ($0.02 in USDC on Base). However, there is no OpenAPI spec, no documentation beyond a landing page, no request/response schema, and no examples. This is effectively a stub listing with verified liveness.
Warnings
- —No API documentation available — docs, pricing, and README pages all return only a wallet-connect prompt
- —No request parameters or response schema documented; actual data format is unknown
- —No OpenAPI or machine-readable spec provided
- —Provider site offers many diverse API categories (AI, analytics, finance, utils) all at the same price with no visible documentation, which may indicate an early-stage or placeholder service
Citations
- —Endpoint returns a 402 x402 challenge with USDC on Base, maxAmountRequired 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/forex/AUDJPY
- —All APIs priced at $0.02 per request with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/AUDJPY