Postman: From API Client to “Everything App”
The March 2026 updates for Postman signify a radical shift from its origins as a focused API testing client toward an all-encompassing platform. Key additions such as AI Agent Builders, managed MCP Servers, and integrated terminals aim to transform Postman into a centralized hub for AI-powered API development. However, these changes raise significant concerns regarding feature bloat, performance degradation, and UI complexity. The transition toward a cloud-first model suggests a strategy of vendor lock-in, potentially stifling innovation by moving core business logic into a proprietary ecosystem. To maintain architectural independence and control, developers are encouraged to weigh the risks of dependency on third-party infrastructure against the simplicity of lightweight, open-source alternatives for API verification.