Postman

Postman is the complete API lifecycle platform. 2025 features AI Agent Builder (orchestrating multi-step workflows) and Postbot (AI driven testing).

When to Use

• API Development: Documentation, Mock Servers, and Monitors.
• Testing: Automated testing in CI via newman CLI.
• Collaboration: Workspaces and "Forks" of collections.

Core Concepts

Collections

Groups of requests. Can be run as a suite.

Environments

Variables ({{base_url}}) that change between Dev, Staging, and Prod.