extraction-knowledge

extraction-knowledge is a skill for Claude Code, Codex from kkhgeo/METASCI. It costs 67 tokens per session (1,874 once invoked), scanned A, original, no licence file.

A skill for extracting and organising knowledge from research-paper PDFs into structured Markdown notes. It groups the material into theory, evidence, methods, context, and critique.

In plain words
What is it for?
Use it to analyse papers, save extracted knowledge, and process PDFs in parallel when supported.
Why use it?
It helps turn long papers into reusable notes while keeping different kinds of claims separate.

Skill for Claude CodeCodex

Part of the metasci plugin — 34 skills, 11 agents shipped together

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/kkhgeo/metasci/extraction-knowledge
Any agent
npx skills add kkhgeo/METASCI --skill extraction-knowledge
Clone the repo
git clone --depth 1 https://github.com/kkhgeo/METASCI

Made for: Claude Code, Codex.

Or install metasci, the plugin that ships this one along with the rest of its 34 skills, 11 agents.

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 extraction-knowledge

README.md
[![agentmods](https://agentmods.dev/badge/skills/kkhgeo/metasci/extraction-knowledge.svg)](https://agentmods.dev/skills/kkhgeo/metasci/extraction-knowledge)
Your own site
<a href="https://agentmods.dev/skills/kkhgeo/metasci/extraction-knowledge"><img src="https://agentmods.dev/badge/skills/kkhgeo/metasci/extraction-knowledge.svg" alt="Measured on agentmods" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,874 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00067 $0.01874
Opus 5 $0.00034 $0.00937
Sonnet 5 $0.00013 $0.00375
Haiku 4.5 $0.00007 $0.00187

Measured 5d ago against content hash af123debb997, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

extraction-knowledge 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.

codex-skills/metasci_extraction/extraction-knowledge/SKILL.md · 270 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 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. 5d ago First seen · 270 lines · 67 tokens per session scan A af123debb997

Subscribe to this mod's changes

extraction-knowledge is a skill published in the GitHub repository kkhgeo/METASCI (6 stars, last pushed 14d ago), with no licence file. It adds 67 tokens to every session and 1,874 once invoked, about $0.0003 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 2026-08-31.