Postman Agent for Windows

Postman Agent — Local bridge for API calls

Postman Agent is a free Windows utility that extends the capabilities of the Postman web app by working around Cross-Origin Resource Sharing (CORS) restrictions enforced by browsers. It enables the browser-based Postman to issue API requests directly from your machine, preventing the typical CORS errors that occur during testing.

How it operates

The agent runs on your Windows workstation and acts as a local proxy for requests initiated from the browser. Because requests are routed through this local component, browser-imposed CORS checks no longer block legitimate development traffic, making it easier to send and receive API calls while using Postman in a browser environment.

Benefits for development and automation

• Speeds up troubleshooting and debugging by eliminating CORS-related interruptions.
• Makes it simpler to integrate automated request flows and scripts during development.
• Provides a straightforward interface that’s approachable for developers at any experience level.
• Reduces friction in the request/response cycle so teams can move faster through iterations.

Who will find it useful

Postman Agent is especially helpful for developers, QA engineers, and automation specialists who need reliable, repeatable API testing without dealing with browser security constraints. It supports both simple exploratory testing and more complex automation scenarios.

Suggested alternative

• SHAREit (Free)

If you prefer a different tool or encounter compatibility issues with the Agent, SHAREit (free) is listed here as an alternative.