Postman Interceptor is a browser extension that acts as a companion to the Postman desktop app. Interceptor enables you to capture network requests and cookies directly from a web browser.
After you install the Interceptor extension, you can start an Interceptor session, which is a time-bound period of traffic capture. You can pause, restart, and stop an Interceptor session, then later start another one. Each session is logged in the History tab and displays the total session time, a traffic overview, and all traffic captured. You can also send requests and responses to a collection and save cookies to the Postman cookie jar.
You can also use Postman Interceptor to automatically sync cookies from a web browser to the Postman cookie jar. Learn more about syncing cookies.
Use the links below to download and install the latest version of the Interceptor extension for your web browser. Interceptor is available for the following browsers:
To open the Interceptor extension, select the Interceptor icon in your browser's toolbar.
If you're on Linux (all Postman versions), macOS (Postman v10.16 or earlier), or Windows (Postman v10.17 or earlier), you need to install Interceptor Bridge before you can capture requests and cookies. If you're on macOS (Postman v10.17.4 or later) or Windows (Postman v10.18 or later), you can skip this step. To check which version of Postman you're using, select the settings icon in the header and select Settings > About.
To install Interceptor Bridge, select Capture requests in the Postman footer. Then select the Via Interceptor tab and select Install Interceptor Bridge.
You can't use Interceptor with the Postman web app. Make sure you've installed the Postman desktop app.
Start an Interceptor session to capture traffic and cookies from your web browser. After you stop the session, captured traffic will automatically open in Postman. All communication between Interceptor and Postman is automatically encrypted.
You can't have more than one proxy or Interceptor session running at the same time.
Open the Interceptor extension by selecting the Interceptor icon in your browser's toolbar.
Make sure the message Ready to capture appears at the bottom of the Interceptor window.
If the message Interceptor disconnected appears, make sure you've installed the Postman desktop app and that the Postman desktop app is open. If you're using Linux (all Postman versions), macOS (Postman v10.16 or earlier), or Windows (Postman v10.17 or earlier), make sure you've installed Interceptor Bridge.
(Optional) On the Capture Requests tab, use the dropdown menus to limit the requests and responses that are captured while the session is active. Postman will capture requests that match the selected criteria and will ignore requests that don't match. You can change the filters at any time during the session:
On the Capture Requests tab, select Start Capture.
Interceptor starts capturing requests and cookies as you use your web browser. The Interceptor extension shows recent requests and the duration of the session.
When you're done capturing traffic, select Stop Capture to end the session.
You can also use the Interceptor extension to automatically sync cookies from your browser to the Postman cookie jar, without starting an Interceptor session. Open the Interceptor extension from your browser's toolbar and select the Sync Cookies tab. Enter the domains you want to sync cookies for and select Sync Cookies. For more information, see Syncing cookies.
When you stop a session, Postman automatically opens the results in Postman. You can also select View in Postman to open the session results in Postman.
To view the Interceptor session again later, select History in the sidebar, then select the Interceptor session. You can also select View Past Sessions on the Interceptor session tab.
The Overview tab shows summary graphs of traffic captured in the Interceptor session. Use the dropdown menu to group requests by method, domain, or content type. The header also displays the session start time, session size, duration, and source.
You can work with the Interceptor session results in the following ways:
You can save requests captured during an Interceptor session to a collection.
Last modified: 2023/10/16
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