FastForex
FastForex is a currency exchange rate API providing current and historical mid-market rates across 150+ world currencies plus common commodities (gold, silver), aimed at applications needing straightforward rate data without the tick-level bid/ask granularity that dedicated trading-focused forex APIs (like 1Forge) provide. A single GET request returns either the latest rates for a base currency against all others, or a direct conversion between two specific currencies with the amount already calculated.
The API supports historical rate lookups for a specific past date (useful for financial reporting or reconciling a transaction against the rate at the time it occurred) and time-series data over a date range for building rate-history charts. Response times are optimized to be fast (as the name suggests) since the primary use case is real-time display in checkout flows, invoicing tools, and price converters rather than algorithmic trading.
For Nigerian e-commerce platforms displaying prices in multiple currencies, invoicing tools converting NGN amounts for international clients, or expense-tracking apps needing historical exchange rates for reconciliation, FastForex's simple request/response model and generous free tier make it a lower-friction choice than a full trading-grade forex API when bid/ask spread precision isn't required.