thanks for bringing this up. I was running a test on one of my cheap geo sites, scaling white hat guest posts. The goal was to see if you could push link velocity faster than the usual 'slow drip' advice without getting flagged. I used Semrush's Backlink Audit tool to monitor it week by week. Started at 5 new links per month, ramped up to 20 over three months. Around week 10, the tool threw a 'Unnatural Link Velocity' warning in the Risk Assessment section. No manual action from Google yet, but the alert itself spooked me enough to pause everything. The TL;DR here is that even good tools will flag you if you move too fast, regardless of link quality. My takeaway is that the tools themselves are now part of the algo radar. So if your monitoring tool warns you, Google probably already sees it. This is the way.