add cross-links

Author: dlepow

articles/api-center/manage-apis-azure-cli.md

@@ -142,3 +142,4 @@ To delete individual API versions and definitions, use [az apic api version dele
 
 * See the [Azure CLI reference for API Center](/cli/azure/apic) for a complete command list, including commands to manage [environments](/cli/azure/apic/environment), [deployments](/cli/azure/apic/api/deployment), [metadata schemas](/cli/azure/apic/metadata-schema), and [API Center services](/cli/azure/apic/service).
 * [Import APIs to your API center from API Management](import-api-management-apis.md)
+* [Use the Visual Studio extension for API Center](use-vscode-extension.md) to build and register APIs from Visual Studio Code.

articles/api-center/register-apis.md

@@ -131,6 +131,8 @@ In this tutorial, you learned how to use the portal to:
 > * Register one or more APIs
 > * Add an API version with an API definition
 
+As you build out your API inventory, take advantage of other tools to register APIs, such as the [Azure API Center extension for Visual Studio Code](use-vscode-extension.md) and the [Azure CLI](manage-apis-azure-cli.md).
+
 ## Next steps
 
 Your API inventory is starting to take shape! Now you can add information about API environments and deployments.