Exchangerate.host
Real-time current and historical foreign exchange & crypto rates data solution.
{
"success": true,
"terms": "https://exchangerate.host/terms",
"privacy": "https://exchangerate.host/privacy",
"timestamp": 1430068515,
"source": "USD",
"quotes": {
"USDAUD": 1.278384,
"USDCHF": 0.953975,
"USDEUR": 0.919677,
"USDGBP": 0.658443,
"USDPLN": 3.713873
}
}
Response example. If you want to see more check the documentation.