Introduction Why WPProbe? A Local Way to Build the Database Technical Background How WPProbe Works (and What It Can’t Do) Vulnerability Info (Wordfence Matching) References & Ideas Final Words Introduction WPProbe is a tool I built to solve a simple problem: detecting installed WordPress plugins in a reliable and quiet way. In this post, I explain how the tool came to life, its strengths, its limits, and why this REST-based idea is still not widely used, even though it works well.