# Acquirers: ORC API Reference
source: https://developer.mastercard.com/onboard-risk-check/documentation/api-reference/api-reference-orc/index.md

## Environment Domains {#environment-domains}

* Sandbox
* Production

```Sandbox
https://sandbox.api.mastercard.com/onboard-risk-check/
```

```Production
https://api.mastercard.com/onboard-risk-check/
```

## APIs {#apis}

> To see the details about parameters expected in the request payload, please check [Acquirers: Parameters](https://developer.mastercard.com/onboard-risk-check/documentation/parameters/acquirers-parameters/index.md).
>

API Specification: `https://static.developer.mastercard.com/content/onboard-risk-check/swagger/onboard-risk-check-api.yaml`

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Note: As part of our commitment to evolving market dynamics, we may update our APIs accordingly.