Historical EUR/USD forex data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical forex data for the EUR/USD currency pair. It is part of the lowpaymentfee.com platform, which offers a variety of pay-per-call APIs spanning data analytics, AI/ML, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network at $0.02 per request with no API keys, rate limits, or subscriptions required.
The specific endpoint at `/api/v1/forex/EURUSD/history` accepts POST requests and returns JSON. The x402 challenge confirms it is live, advertising a max amount of 20,000 base units of USDC (0x8335…on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme to the provider's wallet address.
Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint name and path strongly suggest it returns historical OHLC or time-series price data for EUR/USD, but the exact request parameters and response format are unknown.
Capabilities
Use cases
- —Retrieving historical EUR/USD exchange rate data for backtesting trading strategies
- —Feeding forex history into analytics dashboards or financial models
- —Programmatic access to EUR/USD price history without API key management
- —Agent-driven forex data retrieval with automatic micropayment settlement
Fit
Best for
- —Developers needing quick, keyless access to EUR/USD historical data
- —AI agents that can settle x402 payments on Base
- —Low-volume or sporadic forex data consumers who prefer pay-per-call pricing
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users who need comprehensive multi-pair forex coverage from a single endpoint
- —Anyone unable to settle USDC payments on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/EURUSD/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a landing page listing, no request/response schema, and no examples. The actual request parameters and response format are entirely unknown, making this effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — request parameters and response format are unknown
- —All documentation pages (docs, API, pricing, README) return only a 'Connect wallet' prompt with no content
- —The endpoint path suggests forex history but the exact data format (OHLC, tick, etc.) and supported date ranges are unverified
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/forex/EURUSD/history
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/forex/EURUSD/history