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U2 — YouTube Transcript & AI Summaries (Use Your Own API Key)

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Overview

Get YouTube transcripts and AI summaries directly inside YouTube using your own API key. U2 lets you summarize videos with your…

Get YouTube transcripts and AI summaries directly inside YouTube using your own API key. U2 lets you summarize videos with your preferred AI model and custom prompts, giving you full control over privacy, cost, and output quality. No subscriptions or accounts required. Features 📄 Transcript Viewer View and copy the full transcript of any YouTube video. 🤖 AI Video Summaries Generate concise summaries of long videos in seconds. 🔑 Use Your Own API Key Connect your OpenAI, Claude, or other AI provider. 🧠 Custom Prompts Define how summaries are generated (bullet points, notes, insights, etc.). 🔒 Privacy First & Open Source Your data is processed using your own API key. No data is shared with U2 backend or its developers. You can view our source code here: https://github.com/SudShekhar/U2/ How It Works 1) Install the U2 extension 2) Open any YouTube video 3) Add your API key 4) Generate a transcript or AI summary Perfect For • Learning from long videos • Research and study notes • Podcasts and interviews • Tutorials and lectures U2 currently supports the latest AI models from ChatGPT, Anthropic (Claude) and Google (Gemini). Support for other AI models is coming soon. U2 is open source and we welcome any contributions from others (https://github.com/SudShekhar/U2/)

Details

  • Version
    0.1.0
  • Updated
    March 12, 2026
  • Offered by
    sudshekharapps
  • Size
    43.57KiB
  • Languages
    English
  • Developer
    TechHarbour LLP
    Eden Au Lac Apartment Indiranagar Bengaluru, Karnataka 560038 IN
    Email
    sudshekharapps@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

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