You can use POSTMAN to get JWT token and then invoke the secured API method by passing the JWT token. The custom authorizer will verify the token to allow the access to the API call.
Azure
How to create Custom Authorizer in AWS API Gateway
In this article we will create a lambda function which will act as custom authorizer for invoking AWS API Gateway calls.
How to import and deploy an API using AWS API Gateway
You can easily import an sample API in AWS API Gateway and deploy it after testing the published methods.
Create an Azure Service Principal
Follow the steps to create a Service Principal in Azure. This Service Principal can be used to authenticate and get access to resources.
How to access AWS API Gateway Endpoints secured by Custom Authorizer from Microsoft Azure and test using POSTMAN
Follow the steps provided in this article to access AWS API Gateway Endpoints secured by Custom Authorizer from Microsoft Azure and test using POSTMAN
What happens when VSTS PAT (personal access token) used for Build Agent expires?
Will the Build agent still work? What will happen if I restart build agent after PAT expires?
How to get access to the secrets saved in Azure Key Vault using REST API with POSTMAN
Azure provides Service Principal to access Key Vault and its secret values using REST APIs wiht POSTMAN
How can native application get access to the secrets saved in Azure Key Vault
Access the secrets like password or database connection string stored in Azure Key Vault using native client written in C#.
Reset Remote Desktop Services or its administrator password in a Windows VM by using the VMAccess extension and PowerShell (azurerm or az module)
Reset Remote Desktop Services or its administrator password in a Windows VM by using the VMAccess extension and PowerShell (azurerm or az module)
Azure table storage service REST API operations using POSTMAN
The REST API operations provided by azure table storage service can be used within POSTMAN to Query, Insert, Update and Delete entities in table.