learn

learn is a skill for Claude Code from clearsmog/claude-skills. It costs 41 tokens per session (996 once invoked), scanned B, a copy of learn, MIT.

A workflow for saving useful discoveries from a work session as reusable instructions for future sessions.

In plain words
What is it for?
It helps document difficult debugging solutions, tool integrations, workarounds, trial-and-error findings, and repeatable automation workflows.
Why use it?
It prevents non-obvious fixes, workarounds, and repeatable procedures from being forgotten or rediscovered.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: reads .claude/ paths; mentions Claude Code.

Good fit It helps document difficult debugging solutions, tool integrations, workarounds, trial-and-error findings, and repeatable automation workflows.

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

Made for: Claude Code.

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/clearsmog/claude-skills/learn"><img src="https://agentmods.dev/badge/skills/clearsmog/claude-skills/learn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 996 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod 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 $0.00041 $0.00996
Opus 5 $0.00020 $0.00498
Sonnet 5 $0.00008 $0.00199
Haiku 4.5 $0.00004 $0.00100

Measured 9d ago against content hash cdf83a65b17a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

learn scanned grade B with 1 finding 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 9d 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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

ls .claude/skills/ 2>/dev/null
Origin

This is a copy

91% identical to learn — 62 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

learn/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/learn — Skill Extraction Workflow

Extract non-obvious discoveries into reusable skills that persist across sessions.

When to Use This Skill

Invoke /learn when you encounter:

  • Non-obvious debugging — Investigation that took significant effort, not in docs
  • Misleading errors — Error message was wrong, found the real cause
  • Workarounds — Found a limitation with a creative solution
  • Tool integration — Undocumented API usage or configuration
  • Trial-and-error — Multiple attempts before success
  • Repeatable workflows — Multi-step task you'd do again
  • User-facing automation — Reports, checks, or processes users will request

Workflow Phases

PHASE 1: Evaluate (Self-Assessment)

Before creating a skill, answer these questions:

  1. "What did I just learn that wasn't obvious before starting?"
  2. "Would future-me benefit from this being documented?"
  3. "Was the solution non-obvious from documentation alone?"
  4. "Is this a multi-step workflow I'd repeat?"

Continue only if YES to at least one question.

PHASE 2: Check Existing Skills

Search for related skills to avoid duplication:

# Check project skills
ls .claude/skills/ 2>/dev/null

# Check global skills
ls ~/.claude/skills/ 2>/dev/null

# Search for keywords
grep -r -i "KEYWORD" .claude/skills/ ~/.claude/skills/ 2>/dev/null

Outcomes:

  • Nothing related → Create new skill (continue to Phase 3)
  • Same trigger & fix → Update existing skill (bump version)
  • Partial overlap → Update with new variant

PHASE 3: Create Skill

Create the skill file at .claude/skills/[skill-name]/SKILL.md:

---
name: descriptive-kebab-case-name
description: |
  [CRITICAL: Include specific triggers in the description]
  - What the skill does
  - Specific trigger conditions (exact error messages, symptoms)
  - When to use it (contexts, scenarios)
author: Claude Code Academic Workflow
version: 1.0.0
argument-hint: "[expected arguments]"  # Optional
---

# Skill Name

## Problem
[Clear problem description — what situation triggers this skill]

## Context / Trigger Conditions
[When to use — exact error messages, symptoms, scenarios]
[Be specific enough that you'd recognize it again]

## Solution
[Step-by-step solution]
[Include commands, code snippets, or workflows]

## Verification
[How to verify it worked]
[Expected output or state]

## Example
[Concrete example of the skill in action]

## References
[Documentation links, related files, or prior discussions]

Read the full file on GitHub · 158 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. 9d ago First seen · 158 lines · 41 tokens per session scan B cdf83a65b17a

Subscribe to this mod's changes

learn is a skill published in the GitHub repository clearsmog/claude-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 41 tokens to every session and 996 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). It is 91% identical to learn, differing in 62 lines, and is treated as a copy.