What YouTube URL formats does this skill support?

The skill supports youtube.com/watch, youtu.be, and mobile URL formats for YouTube videos.

What happens if a video has no transcript available?

The skill will check transcript availability and display a specific user-facing error message if transcripts are disabled, not found, or the video is private — it cannot proceed without a transcript.

Does this skill require any dependencies to be installed?

Yes, it requires Python 3 and the `youtube-transcript-api` library; the skill will offer to install the library via pip if it's missing and will ask for explicit confirmation before proceeding.

What summarization framework does this skill use?

The skill uses the STAR + R-I-S-E prompting framework to generate comprehensive summaries, structuring output into executive synthesis, detailed section-by-section breakdown, key insights, concepts/terminology, and resources/references.

Can I save both the summary and the raw transcript?

Yes, the skill offers a save option letting you choose to keep just the summary or both the summary and raw transcript, written to a dated Markdown file.

Skill

Summarize YouTube Videos with Detailed Transcripts

Name: Youtube Summarizer
Availability: OnlineOnly
Author: Antigravity

Extracts YouTube video transcripts and generates comprehensive summaries using the STAR + R-I-S-E framework for thorough content analysis and documentation.

Get skill

Works with youtube

Antigravity

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Spark score

out of 100

Updated 11 days ago

Source checked Sep 10, 2026

Version 17.0.0

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Why it matters

Extract comprehensive summaries and detailed documentation from YouTube videos, including transcripts and structured insights, to facilitate content analysis and reference.

Outcomes

What it gets done

Extracts transcripts from YouTube videos.

Generates verbose summaries using the STAR + R-I-S-E framework.

Validates video availability and URL format.

Provides detailed documentation of video content.

Install

Add it to your toolbox

Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.

Run in your project directory:

curl -fsSL https://spark.entire.vc/get/ag-youtube-summarizer | bash

After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.

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Overview

Youtube Summarizer

This skill extracts transcripts from YouTube videos using the youtube-transcript-api Python library and generates comprehensive, verbose summaries structured with the STAR + R-I-S-E framework. It validates video availability and produces detailed documentation from the video content. Use this skill when you need thorough content analysis and reference documentation from educational videos, lectures, tutorials, or informational content.

What it does

This skill extracts transcripts from YouTube videos and generates comprehensive, verbose summaries using the STAR + R-I-S-E framework. It validates video availability, extracts transcripts using the youtube-transcript-api Python library, and produces detailed documentation from the source video.

When to use - and when NOT to

Use this skill when you need thorough content analysis and reference documentation from educational videos, lectures, tutorials, or informational content.

Do not use this skill when you need brief, high-level overviews or quick takeaways, as this skill produces comprehensive summaries.

Inputs and outputs

You provide a YouTube video URL. The skill validates the video's availability, extracts its transcript using the youtube-transcript-api Python library, and returns a comprehensive summary structured according to the STAR + R-I-S-E framework.

Who it's for

This skill serves researchers, students, educators, and professionals who need detailed reference documentation from video content. Anyone who needs to create thorough content analysis or maintain comprehensive records of video-based learning materials will benefit from this skill's framework-driven approach.

Source README

The skill is designed for users who need thorough content analysis and reference documentation from educational videos, lectures, tutorials, or informational content.

FAQ

Common questions

Discussion