ModBrain

Inspiration

Cost Saving AI Mod**: Traditional AI moderation tools are financially unsustainable because they scan every single piece of content, rapidly consuming expensive API tokens. This application solves the cost bottleneck using ai when a post or a comment get reported.

Smart Modmail Inbox: Manually reviewing a user's past post history and moderation logs to understand a ban takes too much time for moderators. Tired moderators often write blunt or emotional responses, which can escalate arguments with users. It takes a lot of time for mods to write replies, because they have to view the user activity.

What it does

Traditional AI moderation tools are financially unsustainable because they scan every single piece of content, rapidly consuming expensive API tokens. This application solves the cost bottleneck using ai when a post or a comment get reported.

Furthermore, it integrates with the Google Gemini API to leverage free tier models for event driven analysis.

##Smart ModMail Inbox

Automatic User Summary When a moderator opens a Modmail thread, a backend script automatically fetches the user's recent data (last 5 posts, last 5 comments, and full moderation/AutoMod history) via Reddit's API.

AI Auto Reply It analyses the user's complaint, cross-references it with the specific rule they broke (from the fetched mod log), and generates a highly contextual reply draft complete with placeholders for the moderator to review and edit.

Polish Draft Button: Automatically improve your ModMail message with AI, with a click of a button.

How we built it

With Devvit, and VS Code AI agents.

Challenges we ran into

Racing Against the Clock: Building an app that handles reactive moderation and a smart Modmail assistant with complex API fetching meant we were fighting time from hour one. We had to ruthlessly prioritize core functionality over extra UI polish to ensure we delivered a working prototype.

Reddit's Menu Constraints: Reddit’s developer platform (Devvit) currently limits custom action buttons to only two primary menus. This meant we couldn't place our tools exactly where a moderator might naturally look for them, forcing us to think critically about UX layouts within those constraints.

The "First Launch" UX Barrier: Because of our limited time and the architectural boundaries of the Reddit API, we couldn't build a seamless, one-click onboarding experience for moderators trying to launch the app for the very first time.

Built With

• devvit