PrintCash with AI
EasySaaSFrontierClear niche and buyerAI model/API accessPayments via Stripe
Operator-Reported

AI Moderation Bot That Removes Spam and Scams From Discord, Telegram and WhatsApp Groups

Built by a New York engineer after scammers took over his game server chat: an AI bot that enforces each community's own rules.

In plain English

Watchdog is a bot that joins online group chats and keeps out spam, scams and trolls. The owner writes the rules in normal words, and the AI reads each new message and removes the ones that break them. It can also answer common questions from members. One engineer built it after scammers flooded his own community.

Automation95%
Startup costNot disclosed
Time to first $Not disclosed
Monthly range*$444 /mo

~$444/mo recurring revenue (founder Indie Hackers profile via IndieMakerList, 2025)

DifficultyEasy
SourceIndieMakerList - Watchdog ↗

Operator: Ben Katz (solo founder)

Operator-Reported

A named, real operator ran this and shared results publicly. The figures are their own.

Not disclosed.

The tool stack

Stripe ↗
2.9% + 30¢ per charge

Payments

 OpenAI API ↗
Pay per token

LLM / vision

 Next.js ↗
Free (open source)

Web app framework

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

  1. Start on one platform (Discord) where community owners feel the pain.
  2. Let owners write rules in plain words; AI checks every message against them.
  3. Add more platforms like Telegram, WhatsApp and Reddit.
  4. Monthly plans by community size; launch on Product Hunt.

What's automated vs. the human 5%

The machine does

  • Core AI generation/analysis
  • Billing and onboarding

You still do

  • Product quality and support
  • Distribution and marketing
  • Compliance and edge cases

Overview

Built by a New York engineer after scammers took over his game server chat: an AI bot that enforces each community’s own rules.

Operator: Ben Katz (solo founder). Website: https://watchdog.chat/

Estimated split: about 95% of the work automated, 5% human.

Realistic income

IndieMakerList lists Watchdog at about $444 a month in recurring revenue for 2025, taken from the founder’s own Indie Hackers profile. This figure is operator-reported, not independently verified. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live source — numbers change.

Risks

  • The ~$444/mo figure is self-reported on the founder’s Indie Hackers profile and only dated to 2025.
  • Chat platforms can change bot rules at any time.
  • False removals annoy members, so owners need easy review.
  • Startup cost and time to first dollar are not disclosed.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.

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