Download Postman 12.23.1

When testing an API before shipping it, most developers download Postman first — and for good reason. What started as a Chrome extension is now a standalone desktop client for Windows, macOS, and Linux built by Postdot Technologies, letting you fire off GET, POST, and PUT requests without writing a line of cURL.

Backend developers debugging a broken endpoint and QA engineers running regression checks before a release both keep it open all day. Version 12.23.1 folds in the AI Agent Builder, which turns a REST API into an agent-ready tool without extra coding, alongside the usual round of bug fixes.

Key Features of Postman

• Sends REST, GraphQL, and WebSocket requests from the same tabbed interface, so switching protocols doesn’t mean switching apps.
• Groups related requests into Collections, with Environments that swap base URLs and API keys between dev, staging, and production in one click.
• Runs JavaScript-based test scripts after each request and chains them into automated Collection Runs for regression testing.
• Spins up mock servers that simulate an API’s responses before the backend team has written a single endpoint.
• Schedules Monitors that hit an API on a recurring basis and alert the team when uptime or response time drops.
• Generates interactive API documentation directly from a collection, so client teams don’t need a separate wiki page.
• Includes a Postman CLI for running the same test suites inside a CI/CD pipeline as part of a build step.
• Manages OAuth tokens, API keys, and other credentials through encrypted environment variables instead of pasting them into requests.

How to Install Postman

1. Download the Postman installer above.
2. Run the (x64).exe file; Postman installs without asking for admin rights on most systems.
3. Sign in with a Postman account, or skip sign-in to use it fully offline.
4. Create your first request by picking a method (GET, POST, etc.) and entering an endpoint URL.
5. Save the request to a collection so it’s easy to find next time.

Enjoy using Postman!