If you’ve ever been unexpectedly banned from a subreddit with a message mentioning “Bot Bouncer,” you’re not alone. Bot Bouncer is a powerful, free moderation tool that thousands of subreddits use to automatically detect and block bots, spam farms, karma farmers, and disruptive accounts. It’s the modern replacement for the old BotDefense system and runs on Reddit’s Devvit platform.

While it’s excellent at catching real spammers, it sometimes flags genuine human users — especially newer accounts, people with similar-sounding bios, or those who post quickly. In this post, I break down all the specific checks Bot Bouncer performs (based on public code analysis) and give clear, practical advice on how to stay safe and avoid false positives.

The 27 Detection Checks – Grouped by Type

Bot Bouncer scans your profile, history, and behavior using a combination of regexes, fuzzy matching, history analysis, and social-link checks. Here’s every major one, what it looks for, and how to prevent triggering it accidentally.

Please feel free to share this information but credit would be much appreciated 🙂

Important disclaimer: This article is for educational purposes only. Bot Bouncer helps protect communities from spam — do not use this information to evade legitimate moderation or break Reddit’s rules. If you’ve been flagged unfairly, the proper way to resolve it is to appeal calmly through modmail to r/BotBouncer with proof you’re a real user.