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Postman

API engineering for your agents

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Postman is a unified platform for designing, testing, documenting, distributing, and monitoring APIs, bringing these activities into one environment rather than separate tools. It also provides tooling for AI agents and coding assistants, including a Postman CLI that can be installed into agents to run collections, tests, and API workflows from within an editor.

Core capabilities include an API client with multi-protocol support, authentication, variables, and environments; Spec Hub for API design; mock servers; API documentation with AI-generated content; workspaces for internal, partner, and public collaboration; collection-based testing with CI integrations; API monitoring; and security and governance features such as Postman Vault, secret scanning, audit logs, and custom governance functions. Integrations cover Git providers, CI/CD, monitoring and incident tools, vaults, and collaboration platforms. AI features include the Postman MCP server, an MCP catalog, and agent skills for API discovery, testing, mocking, monitoring, and performance testing.

Postman is aimed at developers, API teams, and organizations managing API programs at scale. It is available as a free plan, with additional editions for teams and enterprises; the platform is offered through desktop and web, with a CLI for agents and CI environments.

12 alternatives to Postman

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