How to Scrape YouTube Comments Without an API Key (Innertube Method)

If you've ever tried to use the YouTube Data API for comments, you know the pain: quota limits, API keys, OAuth setup, and a maximum of 10,000 units per day. What if I told you there's a hidden API that YouTube's own frontend uses — no key required, no quotas, no limits? The Innertube API YouTube's web player uses an internal API called Innertube to fetch comments. It's the same endpoint that loads comments when you scroll down on a video page. The key insight: this API is public. It doesn't require authentication. And it returns structured JSON with everything you need: Comment text Author name and channel URL Like count Reply count Published date Whether it's pinned or by the creator Why This Matters For sentiment analysis: Pull 1,000+ comments from a product review video to understand what real customers think. For market research: Analyze comments on industry videos to find pain points, feature requests, and trends. For content creators: See what questions your audience asks most —