# API Reference
source: https://developer.mastercard.com/identity-insights-for-transactions/documentation/api-reference/index.md

## Environment Domains {#environment-domains}

**Note:** Refer [Announcement section](https://developer.mastercard.com/identity-insights-for-transactions/documentation/announcements/index.md) to select domain
* Sandbox/MTF
* Production

```Sandbox/MTF
https://sandbox.idv.mastercard.com/identity/transactions
https://sandbox.idv.mastercard.eu/identity/transactions
https://sandbox.idv.mastercard.asia/identity/transactions
```

```Production
https://idv.mastercard.com/identity/transactions
https://idv.mastercard.eu/identity/transactions
https://idv.mastercard.asia/identity/transactions
```

## APIs {#apis}


API Specification: `https://static.developer.mastercard.com/content/identity-insights-for-transactions/swagger/IIT-swagger-public.yaml`