# API Reference
source: https://developer.mastercard.com/enhanced-currency-conversion-calculator/documentation/api-reference/index.md

### API Host {#api-host}

* Sandbox
* Production

```sandbox
https://sandbox.api.mastercard.com/enhanced/settlement/currencyrate
```

```Production
https://api.mastercard.com/enhanced/settlement/currencyrate
```

The APIs support JSON requests and responses.

The expandable sections in API Reference allows you to try the Sandbox APIs directly from your browser. The API Reference application provides simulated, static responses.  


API Specification: `https://static.developer.mastercard.com/content/enhanced-currency-conversion-calculator/swagger/swaggerui.yaml`