Migrating from Open Exchange Rates to AllRatesToday: A Developer's Guide

If you've decided to move off Open Exchange Rates — for real-time rates, any-base-currency flexibility, official SDKs, or free historical data — the migration itself is usually a one-afternoon job. The JSON shapes are similar enough that most of the work is mechanical.

This guide walks you through every endpoint, shows the URL and response-shape differences, and ends with the SDK drop-in for each supported language.

Before you start

1. 
   Get your AllRatesToday API key at and start your migration today. Free tier, no credit card, 60-second rates.
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