summarize

summarize is a skill for Claude Code, Codex from IceWhaleTech/ZimaOS-Blue. It costs 41 tokens per session (1,001 once invoked), scanned A, original, MIT.

A command-line tool for summarizing web pages, local files, and media transcripts.

In plain words
What is it for?
Use it to summarize URLs and files or make a best-effort transcript from a YouTube video.
Why use it?
It can turn longer documents or recordings into shorter summaries when that is the requested task.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to summarize URLs and files or make a best-effort transcript from a YouTube video.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/icewhaletech/zimaos-blue/summarize
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add IceWhaleTech/ZimaOS-Blue --skill summarize
Clone the repo
git clone --depth 1 https://github.com/IceWhaleTech/ZimaOS-Blue

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for summarize

README.md
[![agentmods](https://agentmods.dev/badge/skills/icewhaletech/zimaos-blue/summarize/github.svg)](https://agentmods.dev/skills/icewhaletech/zimaos-blue/summarize)
Your own site
<a href="https://agentmods.dev/skills/icewhaletech/zimaos-blue/summarize"><img src="https://agentmods.dev/badge/skills/icewhaletech/zimaos-blue/summarize/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for summarize

Your own site · 80×15
<a href="https://agentmods.dev/skills/icewhaletech/zimaos-blue/summarize"><img src="https://agentmods.dev/badge/skills/icewhaletech/zimaos-blue/summarize.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,001 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00041 $0.01001
Opus 5 $0.00020 $0.00500
Sonnet 5 $0.00008 $0.00200
Haiku 4.5 $0.00004 $0.00100

Measured 9d ago against content hash e3e77bb7ee50, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

summarize scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

assets/skills/summarize/SKILL.md · 134 lines

How it starts

The opening of the file, as written. The whole thing — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Summarize

Run the external summarize binary via blue exec.

Setup

Verify the CLI exists before relying on it:

blue exec command="summarize --help"

If needed, install it with Homebrew:

blue exec command="brew install steipete/tap/summarize"

Task Routing

User Intent Action
User explicitly asks for summarize.sh blue exec command='summarize ...'
Need best-effort transcript extraction for a YouTube URL blue exec command='summarize ... --youtube auto --extract-only'
Need a plain webpage/article summary and summarize.sh is not required Prefer built-in web tools plus a normal answer
Need JS/login/interactive browsing first Use the built-in browser tool / unified web tools first, then summarize the retrieved content

When to use

Prefer this skill 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)

Command Usage

Quick summary:

blue exec command='summarize https://example.com --model google/gemini-3-flash-preview'
blue exec command='summarize /path/to/file.pdf --model google/gemini-3-flash-preview'
blue exec command='summarize https://youtu.be/dQw4w9WgXcQ --youtube auto'

YouTube: summary vs transcript

Best-effort transcript (URLs only):

blue exec command='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)

Read the full file on GitHub · 134 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 134 lines · 41 tokens per session scan A e3e77bb7ee50

Subscribe to this mod's changes

summarize is a skill published in the GitHub repository IceWhaleTech/ZimaOS-Blue (25 stars, last pushed 4mo ago), licensed MIT. It adds 41 tokens to every session and 1,001 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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