Manage gRPC APIs using Postman

Postman can make requests using gRPC, a schema-driven Remote Procedure Call (RPC) framework often used to enable inter-service communication. Using a gRPC request, you can view supported services and methods (with a service definition), invoke the method of your interest, send a message payload, view the response from the server, and save example responses without entering commands in the terminal or writing any code.

Because it's RPC-based, gRPC facilitates client-server communication over a function call and provides easier abstraction than HTTP, support across multiple languages, and high performance.

gRPC uses protobuf (protocol buffers) as the Interface Definition Language (IDL) to define the API interface (service definition). This definition serves as a contract between the client and the server that specifies the supported services and methods.

Postman's gRPC client interface enables you to use and test your gRPC requests. You can also manage your service definitions and save gRPC example request-response pairs for testing and demonstration purposes.

Postman also enables you to use scripts to write API tests, debug your gRPC requests, and dynamically read or update the values of variables. For more information, see Test and debug values in gRPC requests using JavaScript in Postman. You can also use a mock server to simulate the behavior of a real API by returning sample data for gRPC requests to the API endpoints.