The problem this solves

To verify whether a web server is sending the right requests, we typically reach for a packet-capture tool to see what the other side returned, or what extra requests the site is making. Since I only do this once in a while, I always forget the setup steps, so I figured I would write a note to refresh my memory.

Installation steps

Download and install

Free download link for Fiddler Classic

Tool > Options

Switch to the Https tab > Actions to install the certificate > OK

After configuring, close and restart Fiddler

You can drag and drop to monitor traffic generated by a specific application id

If you know the source of the API, you can also locate it with Ctrl + F5

Search results

Notes

HTTPS does not let you capture the request body. For local testing, switch to HTTP. This version seems to have a few bugs - only "all processes" mode actually captures data.