Historical EUR/GBP forex data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint provides historical exchange rate data for the EUR/GBP currency pair. It is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs spanning finance, analytics, AI/ML, and utilities. The endpoint is accessed via HTTP POST and is gated by the x402 payment protocol, settling in USDC on the Base network.
Pricing is $0.02 per request (20,000 base units of USDC with 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is paid individually via the X-PAYMENT header. The payment is sent to a specified wallet address and must be completed within a 300-second timeout window.
Documentation on the site is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The endpoint name and path strongly suggest it returns historical forex price data for EUR/GBP, but the exact request parameters (date range, granularity, etc.) and response format are unknown.
Capabilities
Use cases
- —Retrieving historical EUR/GBP exchange rates for backtesting trading strategies
- —Feeding forex history into financial models or dashboards
- —Programmatic access to currency pair data without API key management
- —Agent-driven forex data retrieval with automatic micropayment settlement
Fit
Best for
- —Developers needing on-demand forex history without subscriptions
- —AI agents that can settle x402 payments autonomously on Base
- —Low-volume or sporadic forex data consumers who prefer pay-per-use
Not for
- —High-frequency trading requiring sub-second latency and bulk data
- —Users who need comprehensive multi-pair forex coverage from a single documented API
- —Anyone requiring detailed API documentation and guaranteed SLAs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/forex/EURGBP/history \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'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 spec, no request/response schema, no examples, and the docs pages are empty. 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) returned only a 'Connect wallet' prompt with no content
- —The endpoint path suggests forex history but exact capabilities (date ranges, granularity, data fields) cannot be confirmed
Citations
- —The endpoint returns HTTP 402 with an x402 challenge advertising USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/forex/EURGBP/history
- —Pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) which equals $0.02https://lowpaymentfee.com/api/v1/forex/EURGBP/history
- —The platform offers APIs across finance, analytics, AI/ML, and infrastructure categorieshttps://lowpaymentfee.com