CHF/JPY forex rate via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint provides CHF/JPY (Swiss Franc to Japanese Yen) foreign exchange rate data, accessible through the x402 payment protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com covering finance, analytics, AI/ML, crypto, and utility services. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The endpoint accepts HTTP POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header using the x402 "exact" scheme, settling in USDC (contract 0x8335…2913) on Base. The max amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. The payment recipient address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, and the timeout window is 300 seconds.
Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns 402 challenge), but the exact shape of the forex data response (bid/ask, mid-rate, timestamp, etc.) is unknown and must be inferred from the endpoint path alone.
Capabilities
Use cases
- —Fetching real-time or recent CHF/JPY exchange rates for trading bots or dashboards
- —Integrating forex data into agent workflows that can pay per-call via x402
- —Building currency conversion features without managing API key subscriptions
Fit
Best for
- —Agents or apps needing on-demand CHF/JPY rates with no signup
- —x402-compatible clients that can pay in USDC on Base
- —Low-volume or sporadic forex data needs where per-request pricing is preferable
Not for
- —High-frequency trading requiring sub-millisecond latency and guaranteed SLAs
- —Users who need comprehensive multi-pair forex feeds in a single call
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/CHFJPY \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"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 OpenAPI spec, no request/response schema, no examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual data returned is entirely unknown.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema definition found; request body and response format are unknown.
- —No example requests or responses available; the exact forex data fields are unverified.
- —The provider hosts many diverse API categories (AI, analytics, finance, utils) all at $0.02 — quality and reliability of each is unverifiable.
Citations
- —Endpoint returns 402 with x402 challenge, confirming it is live and accepts USDC on Basehttps://lowpaymentfee.com/api/v1/forex/CHFJPY
- —Price is $0.02 per request (20000 base units USDC, 6 decimals)https://lowpaymentfee.com
- —No API keys, no rate limits, instant access advertisedhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/CHFJPY