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AI YouTube comment reply extension

A Chrome extension that drafts replies to YouTube comments for creators, billed monthly.

Estimated cost

About $5, plus AI usage

Who you sell to

Run from India, customers abroad

First version

One person can build it with AI tools

What it is

You build a browser extension that sits on a creator's comment page in YouTube Studio. It finds comments with no reply and drafts an answer with an AI model, using the video's title and the comment's text for context. The creator picks a tone, such as professional, casual or funny, and a length, edits the draft if needed, and sends it. Later versions add saved templates, sorting of comments into questions, praise and spam, and a daily count of replies. Agencies can run several channels.

The problem it solves

A channel with a few hundred comments per video leaves most of them unanswered, because each reply takes a few minutes to write. Viewers who get ignored stop commenting. Creators who do reply spend an hour a day on near-copy-paste answers that need little thought but still need to sound like them.

Who it suits

  • Developers or AI-tool builders who like small focused products
  • YouTubers who have felt this problem themselves
  • People who manage channels for several creators

How it makes money

  • Free plan with 15 replies a day
  • Pro plan at $9 a month
  • Agency plan at $29 a month with team members

How to test it this month

  1. 1Build a bare version for your own or a friend's channel that drafts replies in a side panel, and use it for a week.
  2. 2Message ten creators with 1,000 to 10,000 subscribers, offering free use in return for a weekly feedback call.
  3. 3Record a short before-and-after demo of replying to 50 comments, and post it where small creators gather.

What to watch out for

The extension reads a page you do not control, so a layout change can break it overnight, and automated actions on a platform may go against its terms. Never auto-send. Keep a human approving each reply. AI replies can sound generic, and every draft costs you usage fees, so the free plan needs a careful cap.

Costs and prices are estimates from our plan, not results from a real business. Nothing here promises income.

Want the full plan for this idea?

This page is the short version. The 100 Business Ideas PDF has a business plan for this idea and the others on this site, for a one-time ₹499.

See the PDF

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