learn

learn is a skill for Claude Code, Codex from Encod3d-Sec/TORCH. It costs 139 tokens per session (3,971 once invoked), scanned A, original, MIT.

A close-out workflow that reviews a completed security engagement, improves the procedures that guided it, and saves only reusable, general lessons. An engagement is a defined security test or challenge run.

In plain words
What is it for?
Use it after a solved box, bug bounty, penetration test, or CTF to compare execution with the prescribed workflow, update the harness, and promote generic findings to the wiki.
Why use it?
It helps prevent the same process mistakes from recurring while keeping client-specific information out of the shared knowledge base.

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/encod3d-sec/torch/learn
Any agent
npx skills add Encod3d-Sec/TORCH --skill learn
Clone the repo
git clone --depth 1 https://github.com/Encod3d-Sec/TORCH

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 learn

README.md
[![agentmods](https://agentmods.dev/badge/skills/encod3d-sec/torch/learn.svg)](https://agentmods.dev/skills/encod3d-sec/torch/learn)
Your own site
<a href="https://agentmods.dev/skills/encod3d-sec/torch/learn"><img src="https://agentmods.dev/badge/skills/encod3d-sec/torch/learn.svg" alt="Measured on agentmods" height="20"></a>
Per session 139 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,971 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 $0.00139 $0.03971
Opus 5 $0.00069 $0.01985
Sonnet 5 $0.00028 $0.00794
Haiku 4.5 $0.00014 $0.00397

Measured 4d ago against content hash 75108f6574dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

learn 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 4d 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/workflow/learn/SKILL.md · 246 lines

How it starts

The opening of the file, as written. The whole thing — 246 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Learn: harness retrospective + wiki knowledge harvest

The close-out retrospective, in two phases:

  • Phase 0 (process): diff how the engagement was EXECUTED against the discipline the skills/hooks prescribe, find where the operator (you) or the harness drifted, and fix the harness so the next box does not repeat it. This is the "improve the harness on it" half.
  • Phases 1-7 (knowledge): read the WHOLE finished engagement, diff it against the existing wiki, and promote only the DELTA as durable, generic knowledge. The safety net that catches everything not captured live during the box.

The client-data boundary is enforced by code, not by this prose: engagement-derived content reaches wiki/ ONLY through wiki-stage.py -> wiki-promote.py, which runs check-leaks.sh and fails closed. This skill READS the engagement and WRITES only generic knowledge; it never edits the engagement's own files.

When it fires

  • At close-out: run Skill(learn) once the engagement is marked ## STATUS: SOLVED (OWNED/ROOTED/COMPLETE) AND its walkthrough.md is assembled (the CLAUDE.md execution-loop close-out step). It self-clears the moment this skill writes <eng>/.learn-done.
  • On demand: "extract learnings", "what did we learn", "harvest lessons", "distill", "post-mortem into the wiki" - the same steps apply.

Phase 0: Process retrospective (harness self-improvement) - DO FIRST

Before harvesting knowledge, ask: did we execute the way the skills/hooks told us to, and where we did not, whose fault is it - mine, or the harness's for not catching me? The point is not self-flagellation; it is to turn each drift into a concrete harness change so the next engagement cannot repeat it.

0a. Diff execution against discipline

Re-read the skills that governed this engagement (ctf-box, the hunt-* used, the CLAUDE.md execution loop) and check each mandated step against what actually happened on disk:

Discipline it prescribes How to check it was (not) done Common drift
Recon tooling complete (nmap AND ffuf AND nuclei-read for web) ls targets/$ENG/recon/*.png, .recon-tools marker, tmux window names, log.md ffuf never run; nuclei launched but output never read
Screenshot EVERY finding as it lands count deliberate poc/*.png vs findings in Killchain.md; .screenshot-nudged shots only at the very end; transient states lost
Wiki-first before exploiting each fingerprinted service wiki queries in transcript / log.md jumped to exploitation from memory
A hook nudge fired -> was it acted on? grep the transcript for a nudge (e.g. "switch to ffuf") whose action never followed nudge ignored under momentum
State-first / capture-as-you-go state.md/loot.md updated mid-box vs all-at-end prose-in-chat lost

Read the full file on GitHub · 246 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. 4d ago First seen · 246 lines · 139 tokens per session scan A 75108f6574dc

Subscribe to this mod's changes

learn is a skill published in the GitHub repository Encod3d-Sec/TORCH (282 stars, last pushed 6d ago), licensed MIT. It adds 139 tokens to every session and 3,971 once invoked, about $0.0007 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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