The Postman CLI is the command-line companion that is developed, supported, and signed by Postman. It enables you to run collections, lint API schemas, run security and governance checks, and log in and out.Postman is the platform where teams build those APIs together. With built-in support for the Model Context Protocol (MCP), Postman helps you design, test, and manage APIs that power both human workflows and intelligent agents. Most APIs aren't built for AI.What is Postman? Postman is the world's leading API platform, transforming API development from a fragmented, multi-tool challenge into a unified, collaborative process that spans design, testing, documentation, and monitoring.