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summarize

summarize

github.com/volcengineProductivity41.1k144 installsUpdated today
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About summarize

A CLI for summarizing URLs, local files, and YouTube links, with best-effort video transcript extraction. It supports configurable models and output length, JSON output, and fallback extraction options.

Key features

  1. 01Summarize URLs and local files
  2. 02Summarize YouTube videos
  3. 03Extract video transcripts on a best-effort basis
  4. 04Configure models and output length
  5. 05Offer JSON output and fallback extraction

Use cases

  1. 01Get a quick overview of an article or webpage
  2. 02Summarize local files such as PDFs
  3. 03Obtain a YouTube summary or transcript

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/volcengine/openviking --skill summarize

After installing, type/summarizein Claude Code to confirm it loaded.

Details

From the project README

Summarize

Fast CLI to summarize URLs, local files, and YouTube links.

When to use (trigger phrases)

Use this skill immediately when the user asks any of:

  • “use summarize.sh”
  • “what’s this link/video about?”
  • “summarize this URL/article”
  • “transcribe this YouTube/video” (best-effort transcript extraction; no yt-dlp needed)

Quick start

summarize "https://example.com" --model google/gemini-3-flash-preview
summarize "/path/to/file.pdf" --model google/gemini-3-flash-preview
summarize "https://youtu.be/dQw4w9WgXcQ" --youtube auto

YouTube: summary vs transcript

Best-effort transcript (URLs only):

summarize "https://youtu.be/dQw4w9WgXcQ" --youtube auto --extract-only

If the user asked for a transcript but it’s huge, return a tight summary first, then ask which section/time range to expand.

Model + keys

Set the API key for your chosen provider:

  • OpenAI: OPENAI_API_KEY
  • Anthropic: ANTHROPIC_API_KEY
  • xAI: XAI_API_KEY
  • Google: GEMINI_API_KEY (aliases: GOOGLE_GENERATIVE_AI_API_KEY, GOOGLE_API_KEY)

Default model is google/gemini-3-flash-preview if none is set.

Useful flags

  • --length short|medium|long|xl|xxl|<chars>
  • --max-output-tokens <count>
  • --extract-only (URLs only)
  • --json (machine readable)
  • --firecrawl auto|off|always (fallback extraction)
  • --youtube auto (Apify fallback if APIFY_API_TOKEN set)

Config

Optional config file: ~/.summarize/config.json

{ "model": "openai/gpt-5.2" }

Optional services:

  • FIRECRAWL_API_KEY for blocked sites
  • APIFY_API_TOKEN for YouTube fallback

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