# API Reference
source: https://developer.mastercard.com/agent-suite-for-merchants/documentation/api-reference/index.md

👉 Replace the sample base URLs and the Swagger embed on this page with the real environments and OpenAPI specification for your service. Point the Swagger file setting at the published spec path for your API, for example `static/swagger/your-service.yaml`, and remove any environments or example operations that do not exist for your API.

## Environment Domains {#environment-domains}

* Sandbox
* Production

```Sandbox
https://sandbox.api.mastercard.com/{your-service}
```

```Production
https://api.mastercard.com/{your-service}
```

## Swagger UI {#swagger-ui}


API Specification: `https://static.developer.mastercard.com/content/agent-suite-for-merchants/swagger/petstore.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/agent-suite-for-merchants/documentation/testing/index.md) section to learn about testing the service.