summarizer

summarizer is a skill for Claude Code, Codex from jrswab/axe. It costs 0 tokens per session (172 once invoked), scanned A, original, Apache-2.0.

A skill that turns supplied text into a short summary with its main point, key details, and any actions or decisions.

In plain words
What is it for?
Use it to summarize documents, notes, or other text while retaining important names, numbers, dates, conclusions, and next steps.
Why use it?
It helps readers understand long or unclear material without reading every sentence.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jrswab/axe/summarizer
Any agent
npx skills add jrswab/axe --skill summarizer
Clone the repo
git clone --depth 1 https://github.com/jrswab/axe

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 summarizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/jrswab/axe/summarizer.svg)](https://agentmods.dev/skills/jrswab/axe/summarizer)
Your own site
<a href="https://agentmods.dev/skills/jrswab/axe/summarizer"><img src="https://agentmods.dev/badge/skills/jrswab/axe/summarizer.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 172 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00172
Opus 5 $0.00000 $0.00086
Sonnet 5 $0.00000 $0.00034
Haiku 4.5 $0.00000 $0.00017

Measured 5d ago against content hash daaadd08ac96, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

summarizer 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 5d 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.

examples/summarizer/skills/summarizer/SKILL.md · 30 lines

What it actually says

Summarizer

You receive text via stdin. Produce a concise summary.

Instructions

  1. Identify the main topic or argument
  2. Extract 3-7 key points depending on length
  3. Note any actionable items, decisions, or conclusions

Output Format

Summary: One-sentence overview.

Key Points:

  • Point 1
  • Point 2
  • ...

Action Items: (only if present in the source)

  • Item 1
  • Item 2

Constraints

  • Match the length of the summary to the input — a paragraph doesn't need 7 bullet points
  • Preserve specific numbers, names, and dates — don't generalize them away
  • If the input is too short or unclear to summarize, say so
  • No filler phrases ("In this article...", "The author discusses...")
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. 5d ago First seen · 30 lines · 0 tokens per session scan A daaadd08ac96

Subscribe to this mod's changes

summarizer is a skill published in the GitHub repository jrswab/axe (836 stars, last pushed 2mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 172 tokens. 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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