Agent skill

Summarizer

by holaboss-ai in holaboss-ai/holaOS

Condense long articles, reports, and documents into clear, concise summaries.

Custom licenceAuto-check passed

Install Summarizer

skills CLI
$ npx skills add holaboss-ai/holaOS --skill summarizer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install holaboss-ai/holaOS summarizer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/holaboss-ai/holaOS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/apps/desktop/electron/default-skills/summarizer .claude/skills/summarizer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
summarizer
GitHub stars
11k
Token cost
~615 tokens
SKILL.md length
347 words
Files
1
Skills in repo
30
Repo updated
First seen
Licence
Custom licence

At a glance

Condense long articles, reports, and documents into clear, concise summaries.

  • Works in 4 steps: Read the full input and identify its… → Decide the right length and format for… → Draft the summary leading with the… → …
  • SKILL.md covers When to use this skill, Principles of a faithful summary, Match the format to the need and How to work, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Summarizer is an agent skill from holaboss-ai/holaOS. Condense long articles, reports, and documents into clear, concise summaries.

Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Open-source agentic workspace enterprises can make their own. Connect the systems you already run — 100+ integrations, MCP, chat tools, apps, browser, local files — with shared…

Example prompts

  • “/summarizer”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Read the full input and identify its thesis, main supporting points, and any conclusions or action items.
  2. Decide the right length and format for the reader's need.
  3. Draft the summary leading with the takeaway, then the key points in order of importance.
  4. Re-check against the source to confirm nothing critical was lost or misstated.

What it can do on your machine

Read from SKILL.md and the folder at commit 4684714. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Summarizer loads about 615 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 347 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~22
When it runs · the whole SKILL.md, loaded when a task matches
~615

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 347 words (~615 tokens).

“Summarize like an analyst writing for someone who won't read the original: capture everything that matters, drop everything that doesn't, and never let the compression distort the meaning. A good summary saves the reader time without costing them accuracy.”

— opening of SKILL.md by holaboss-ai, Custom licence
name
summarizer

Read the full SKILL.md on GitHub

Files

Just SKILL.md in apps/desktop/electron/default-skills/summarizer of holaboss-ai/holaOS.

Open the folder on GitHubat commit 4684714

Compare with similar skills

Summarizer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Summarizer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Summarizer this skillholaboss-ai/holaOS11k—~615Automated safety check: PassCustom licence
Summarizeopenclaw/openclaw392k1 repos~531Automated safety check: PassMIT
Writing Clearly And ConciselyJanDeDobbeleer/oh-my-posh24k—~1kAutomated safety check: PassMIT
Articlethedaviddias/Front-End-Checklist74k—~421Automated safety check: PassMIT
Research Summarizeralirezarezvani/claude-skills28k2 repos~2.7kAutomated safety check: PassMIT
Hacker News Summarizerykdojo/claude-code-tips10k—~942Automated safety check: PassCustom licence

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Questions about Summarizer

What does Summarizer do?

Condense long articles, reports, and documents into clear, concise summaries. Summarizer is an agent skill from holaboss-ai/holaOS. Condense long articles, reports, and documents into clear, concise summaries.

How do I install Summarizer in Claude Code?

Run `npx skills add holaboss-ai/holaOS --skill summarizer -a claude-code`. Or copy the skill folder (apps/desktop/electron/default-skills/summarizer in holaboss-ai/holaOS) into .claude/skills/summarizer in your project. Claude Code loads it when a task matches its description.

How do I install Summarizer in Codex?

Run `npx skills add holaboss-ai/holaOS --skill summarizer -a codex`. Or copy the skill folder (apps/desktop/electron/default-skills/summarizer in holaboss-ai/holaOS) into .agents/skills/summarizer in your project. Codex loads it when a task matches its description.

Can I use Summarizer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add holaboss-ai/holaOS --skill summarizer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/summarizer, .gemini/skills/summarizer, .github/skills/summarizer and .opencode/skills/summarizer in your project.

What does Summarizer need to run?

SKILL.md names no scripts, command-line tools or credentials: Summarizer is instructions for the agent only.

Does Summarizer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Summarizer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Summarizer use?

Summarizer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Summarizer use?

About 615 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Summarizer?

Skills that share tags, products or a category with Summarizer: Summarize (openclaw/openclaw, 392k stars), Writing Clearly And Concisely (JanDeDobbeleer/oh-my-posh, 24k stars), Article (thedaviddias/Front-End-Checklist, 74k stars) and Research Summarizer (alirezarezvani/claude-skills, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Summarizer?

holaboss-ai (a GitHub organization) maintains it in holaboss-ai/holaOS, which has 11,451 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on August 21, 2026.

Source: holaboss-ai/holaOS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.