EUR/JPY forex exchange rate via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint provides the current EUR/JPY foreign exchange rate, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals) and requires no API keys, subscriptions, or rate limits — just an x402-compatible payment header.
The endpoint is part of a broader suite of APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/crypto market data, and utility services, all priced uniformly at $0.02 per call. Payment settles in USDC on the Base L2 network using the "exact" x402 scheme. The endpoint accepts POST requests and returns JSON.
Documentation on the site is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but the exact shape of the response body and any required request parameters are unknown.
Capabilities
Use cases
- —Fetching the current EUR/JPY exchange rate for trading bots or portfolio dashboards
- —Integrating real-time forex data into financial applications without API key management
- —Agent-driven currency conversion workflows that pay per call via x402
Fit
Best for
- —Developers needing on-demand EUR/JPY rates without subscription commitments
- —AI agents or automated systems that can settle micropayments 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 coverage from a single documented API
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/EURJPY/rate \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no usage examples, and the docs pages are empty. The response format and any required request body fields are entirely unknown.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown
- —All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content
- —The specific forex data source and update frequency are not disclosed
- —This endpoint is part of a site offering many diverse APIs; quality and reliability of the forex data cannot be verified from available material
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base network, maxAmountRequired 20000https://lowpaymentfee.com/api/v1/forex/EURJPY/rate
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/forex/EURJPY/rate