Debugging Requests in Postman
The Postman Console
The Postman Console (View > Show Postman Console) logs the full details of every request and response, including raw headers and body content, making it the first place to look when something goes wrong.
Common Debugging Techniques
| Technique | Purpose |
|---|---|
| console.log() in scripts | Prints variable values during script execution |
| Checking the raw response | Confirms what the server actually returned |
| Verifying variable values | Catches typos or unset variables early |
Inspecting Headers and Cookies
The Headers and Cookies tabs in the response viewer show exactly what was sent and received, which is useful for diagnosing authentication or CORS-related issues.
Isolating the Problem
Disabling pre-request and test scripts temporarily can help determine whether an issue is caused by the request itself or by a script modifying it.
Debugging often comes down to understanding what a response is telling you - let's finish by covering common errors and HTTP status codes.
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