When an API endpoint returns an unexpected status or payload, Postman lets you inspect the request and response together. The Windows app provides a workspace for building API requests, organizing them into collections, and testing how endpoints behave.
Postman builds API requests in a workspace
Create a request by entering an endpoint and choosing an HTTP method, then add query parameters, headers, authentication details, or a request body. After sending it, inspect the response status, headers, and body in the same workspace. JSON responses can be viewed in a formatted layout, which makes fields easier to scan while debugging.
Save calls to collections so related endpoints stay together—for example, requests for different operations in one service. Collections keep requests available for later testing and can also serve as a record of how an API is called.
Collections and environments organize repeatable tests
A collection can hold requests for a workflow or API, and Postman's collection runner can execute those requests as a group. This makes it easier to repeat a sequence of calls after an API change instead of sending each request individually.
- Set environment variables for values such as a base URL or access token.
- Select a different environment to use corresponding values with the same requests.
- Add JavaScript tests to requests to check response data and outcomes.
Postman supports sharing and API discovery
Postman workspaces let collaborators share collections and related API work. Collections can also provide the basis for API documentation, while mock servers return example responses before a live endpoint is ready. These tools connect request design, testing, and API handoff within Postman's workspace model.
Pros
- Build requests with configurable methods, headers, parameters, and bodies
- Organize related calls into collections and run them together
- Use environment variables and JavaScript tests in API workflows
- Create mock servers and API documentation from collections
Cons
- Shared workspaces and cloud-synced collaboration require Postman accounts
System requirements: Windows 10, Windows 11
Can Postman run a group of API requests?
Yes. Save requests in a collection and use the collection runner to execute them together.
Can Postman test API responses automatically?
Yes. Add JavaScript tests to requests to check response data and outcomes.
What are Postman environments used for?
They store variable values, such as a base URL or token, that requests can use for different setups.