summarize
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
Best for CLI power usersWorks with GitHubLow risk
⌘source
- author
@volcengine- language
- Python
★23kstars
1.6kforks
Apr 19, 2026
✦overview.md
Key Features
- ·Summarize content from URLs, local files, and YouTube links
- ·Extract transcripts from YouTube videos as a best-effort fallback
- ·Support for multiple AI models (OpenAI, Anthropic, xAI, Google)
- ·CLI-based interface with clear command examples
- ·Handles large transcripts by offering summaries first
Use Cases
- →Quickly understand the main points of a long article or research paper
- →Get a transcript from a YouTube video when dedicated tools aren't available
- →Process multiple documents or links in batch via command line
- →Extract key information from PDFs or other local files
Best for
- ✓CLI power users
- ✓research workflows
- ✓content analysis
Not ideal for
- !real-time transcription
- !high-accuracy verbatim transcripts
- !GUI-only users
FAQs
name
summarize
description
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
homepage:https://summarize.sh
metadata:{"vikingbot":{"emoji":"🧾","requires":{"bins":["summarize"]},"install":[{"id":"brew","kind":"brew","formula":"steipete/tap/summarize","bins":["summarize"],"label":"Install summarize (brew)"}]}}
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-dlpneeded)
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
$install
1-click copynpx skills add volcengine/OpenViking --skill summarizeSafety assessment
★
Clarity score
How clear and easy to understand the SKILL.md instructions are, rated from 1 to 5.
5/ 5
excellentVery clear and well structured, with almost no room for misunderstanding.
◎
Actionability score
How directly an agent can act on the SKILL.md instructions, rated from 1 to 5.
5/ 5
very highHighly actionable with clear, concrete steps that an agent can follow directly.