# Card Payments
source: https://developer.mastercard.com/commercial-connect-api/documentation/api-reference/card-payments-api/index.md

## Environment Domains {#environment-domains}

* Sandbox
* Production

```Sandbox
https://sandbox.apiedge.mastercard.com/commercial
```

```Production
https://apiedge.mastercard.com/commercial
```

## Swagger UI {#swagger-ui}


API Specification: `https://static.developer.mastercard.com/content/commercial-connect-api/swagger/commercial-connect-payment-api.yaml`

## Next Steps {#next-steps}

Now that you have a good understanding of all the services endpoints, proceed to the [Testing](https://developer.mastercard.com/commercial-connect-api/documentation/integration-and-testing/index.md) section to learn how to integrate and make sure you are ready to begin testing.