summarize

Summarize content from URLs, local files, and YouTube links.

2|1|Updated Mar 8, 2026
One-click install
npx skills add https://github.com/duggal1/Sapphire-cli --skill summarize-duggal1
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: summarize
Source: https://github.com/duggal1/Sapphire-cli/tree/main/internal/skills/bundled/summarize
Command: npx skills add https://github.com/duggal1/Sapphire-cli --skill summarize-duggal1

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Summarize long articles, PDFs, URLs, and video transcripts into concise, actionable briefs to save time on information overload.

Core Features & Use Cases

  • Summarizes URLs, local documents, and YouTube transcripts.
  • Supports model selection and output controls via CLI flags (e.g., --length, --json, --extract-only).
  • Useful for research briefs, note-taking, and quick content summaries.

Quick Start

Run summarize with a URL, a local file, or a YouTube link to generate a concise summary.

Frequently Asked Questions about summarize

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I summarize a YouTube video transcript into a concise brief?

To summarize a YouTube video transcript, provide the video link to generate a concise, shareable summary. This skill processes video transcripts directly from URLs to produce actionable content briefs.

Can I extract text from a PDF and generate a summary using a command line tool?

Yes, you can summarize PDFs and local files by passing them to the tool, which extracts text to generate summaries. The --extract-only flag allows you to output the raw text without summarizing it.

How do I control the length and format of content summaries for research notes?

You can control summary length and format using CLI flags like --length and --json. These options allow you to customize output for research briefs and integrate summaries into quick-note workflows.

Do I need API keys to summarize URLs and local documents?

Yes, summarizing URLs and local documents requires API keys for Gemini or OpenAI. You must configure these external model keys to process articles and generate actionable summaries.

What is the best way to summarize URLs into shareable content briefs?

The best way to summarize URLs into shareable briefs is using a tool that processes web links directly. This approach handles articles and documents to produce concise outputs for quick sharing.