Automated moderation that just works.
Reddit’s built-in AutoModerator is too complex. It requires writing YAML rules with regex. Most subreddits don’t use it properly (or at all) because it is hard to configure and maintain.
In addition, most communities don’t need complex rule engines. They just need a simple answer:
Does this new post fit our subreddit?
Before the LLM era, this question was difficult to answer programmatically, hence the need for complex regex configurations and manual intervention. But nowadays we have powerful models that understand context and rules and can directly evaluate it.
AI AutoModerator
This app is built with the Keep It Simple, Stupid (KISS) principle in mind:
- Install
- Go to the control panel (top right of your subreddit)
- Add your Gemini API key and save it (the default selected model has a generous free tier, so you will not hit limits easily)
- Done. Each new post is checked against your rules, subreddit description, and content, and is automatically evaluated with the question: “Does this post fit our subreddit?”
Traditional AutoModerator
Write rules → Test → Debug → Rewrite → Maintain → Hope it works
AI AutoModerator
Add API key → Done
Other Features
- Prompt-injection resistant: The internal moderation prompt treats user content as untrusted input, preventing instruction override attempts.
- Activity log with post recovery: Even if users delete content after moderation, you retain a full record of actions and context.
- Extra instructions: Add private moderation rules or behaviors not exposed to users using plain language.
- Customizable moderation flow: While the app comes with sensible defaults for what to do when it rejects a post, you can customize the moderation flow to your liking.
- Compatible with AutoModerator: Supports gradual migration or hybrid setups. You can keep existing complex AutoModerator rules while AI AutoModerator runs alongside them.
- Community-driven development: Bug reports and feature requests are tracked at Fider and prioritized based on feedback.
Demo
Post here to demo it without installing it: https://www.reddit.com/r/AiAutoModerator/
Install it on a demo subreddit: https://developers.reddit.com/apps/aiautomoderator
Built With
- devvit
- express.js
- gemini
- htmx
- node.js
- picocss
- redis
- typescript


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