Using Postman’s UI, I can hit any internal or external API. We support multiple protocols like HTTP, GraphQL, and gRPC, which are popular in microservices.

About Postman Postman is the world’s leading API platform, used by more than 17 million developers and 500,000 organizations worldwide for building and using APIs.

Postman Launches New Web Client to Simplify API Development - Customers can access Postman from web browsers, improve speed/scope of API development.