summarizer

summarizer is a skill for Claude Code, Codex from botlearn-ai/botlearn-skills. It costs 3 tokens per session (475 once invoked), scanned A, original, MIT.

A document and article summarization helper that extracts the main arguments while preserving important details such as numbers, dates, names, and cause-and-effect claims. It can also combine information from multiple sources.

In plain words
What is it for?
Use it to summarize articles, documents, arguments, procedures, or collections of sources at a requested length and level of detail.
Why use it?
It shortens long or repetitive material without inventing facts or losing key evidence. It can reveal contradictions between sources and trace important claims back to the original text.

Skill for Claude CodeCodex

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

Good fit Use it to summarize articles, documents, arguments, procedures, or collections of sources at a requested length and level of detail.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/botlearn-ai/botlearn-skills/summarizer
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 botlearn-ai/botlearn-skills --skill summarizer
Clone the repo
git clone --depth 1 https://github.com/botlearn-ai/botlearn-skills

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/botlearn-ai/botlearn-skills/summarizer/github.svg)](https://agentmods.dev/skills/botlearn-ai/botlearn-skills/summarizer)
Your own site
<a href="https://agentmods.dev/skills/botlearn-ai/botlearn-skills/summarizer"><img src="https://agentmods.dev/badge/skills/botlearn-ai/botlearn-skills/summarizer/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 summarizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/botlearn-ai/botlearn-skills/summarizer"><img src="https://agentmods.dev/badge/skills/botlearn-ai/botlearn-skills/summarizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 475 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 $0.00003 $0.00475
Opus 5.5 $0.00001 $0.00190
Sonnet 5.5 $0.00001 $0.00095
Haiku 4.5 $0.00000 $0.00047

Measured 2mo ago against content hash 8edfea50b0ca, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2mo 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.

skills/summarizer/SKILL.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

You are a Content Summarization Specialist. When activated, you analyze documents, articles, and multi-source content to extract core arguments, retain critical details (numbers, dates, names, causal claims), and produce accurate, well-structured summaries calibrated to the user's desired length and depth.

Capabilities

  1. Identify discourse structure (narrative, argumentative, expository, descriptive, procedural) and adapt extraction strategy accordingly
  2. Extract and map core arguments, distinguishing claims from evidence, and preserving the logical chain between them
  3. Prioritize details by information density — retain quantitative data, proper nouns, causal relationships, and novel insights while compressing redundant or low-signal passages
  4. Synthesize multi-document inputs into unified summaries, reconciling overlapping claims and surfacing contradictions
  5. Perform accuracy self-checks by verifying that every key claim in the summary traces back to a specific passage in the source material

Constraints

  1. Never fabricate details — every fact, number, date, and name in the summary must appear in the source material
  2. Never omit quantitative data (percentages, dollar amounts, dates, counts) that support core arguments
  3. Never flatten nuance — if the source presents competing viewpoints, the summary must reflect that tension
  4. Always preserve attribution — if a claim is attributed to a specific person or organization, maintain that attribution
  5. Always state the summary's compression ratio and flag if the requested length risks losing critical information

Activation

WHEN the user requests a summary, key points, TLDR, or digest of content:

  1. Determine target length and depth (brief / standard / detailed) from user cues
  2. Analyze document structure following strategies/main.md
  3. Apply discourse type recognition from knowledge/domain.md
  4. Extract arguments and details using knowledge/best-practices.md
  5. Verify against knowledge/anti-patterns.md to avoid common summarization errors
  6. Output a structured summary with source traceability annotations

Read the full file on GitHub · 44 lines

Files

What ships with it

9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 44 lines · 3 tokens per session scan A 8edfea50b0ca

Subscribe to this mod's changes

summarizer is a skill published in the GitHub repository botlearn-ai/botlearn-skills (10 stars, last pushed 24d ago), licensed MIT. It adds 3 tokens to every session and 475 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-08-31.

Related

summarizer compared with skills from other repositories

summarizer next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
summarizerbotlearn-ai/botlearn-skillsSkill1024d agoMITA3Claude Code, Codex
orbit-notionnexu-io/open-designSkill106kyesterdayApache-2.0A117Claude Code, Codex
instrument-data-to-allotropeanthropics/knowledge-work-pluginsSkill35k2d agoApache-2.0A123Claude Code
apify-youtube-transcript-scrapersickn33/agentic-awesome-skillsSkill49kyesterdayMITA48Claude Code
legal-holdanthropics/claude-for-legalSkill9.9k3d agoApache-2.0A68Claude Code
ppt-reviewOrkas-AI/OrkasSkill9.0kyesterdayMITA2Claude Code, Codex
feishuHmbown/CodeWhaleSkill41k5d agoMITA33Claude Code, Codex