ExchangeRate-API

API Details

⚡ Quick Start

Copy this JavaScript snippet to start using the API immediately.

const res = await fetch("https://www.exchangerate-api.com/docs", {
  headers: { "Authorization": "Bearer YOUR_API_KEY" }
});
const data = await res.json();
console.log(data);

🚀 Access This API

View endpoints, request formats, rate limits, and full response schemas in the official docs.

🔐 Authentication Guide

Register on the provider site to get a free key, then pass it in your request:

Authorization: Bearer YOUR_KEY
// or as query param:
?api_key=YOUR_KEY

⚙️ Compatibility

💡 Developer Tips

• →Store keys in .env — never expose them in client-side code.
• →Direct browser fetch calls work — no proxy needed.
• →Handle rate limits with retry logic and exponential backoff.
• →Cache responses locally to minimize calls and stay on free tier.

📂 Finance Category

Explore all free APIs in the Finance category.