explain-code

A structured way to explain code using a short summary, an everyday analogy, an ASCII diagram, a step-by-step walkthrough, and common pitfalls.

In plain words
What is it for?
Answering questions about how code works, tracing data through a program, and pointing out mistakes common to that type of code.
Why use it?
It turns unfamiliar code into a visual and concrete explanation, making the flow easier to follow.

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/forest6511/claude-code-recipes-v2/explain-code
Any agent
npx skills add forest6511/claude-code-recipes-v2 --skill explain-code
Clone the repo
git clone --depth 1 https://github.com/forest6511/claude-code-recipes-v2

Made for: Claude Code, Codex.

Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 176 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 $0.00060 $0.00176
Opus 5 $0.00030 $0.00088
Sonnet 5 $0.00012 $0.00035
Haiku 4.5 $0.00006 $0.00018

Measured 2d ago against content hash 666046cc2494, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

explain-code 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 2d 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.

ch07-skills-basics/recipe-36/.claude/skills/explain-code/SKILL.md · 13 lines

What it actually says

コードを説明するときは以下の構成で答えます。

  1. 一言要約: 何をするコードか1文で
  2. 例え: 日常のものに例えて流れを説明
  3. ASCII 図解: データフロー・構造を図示
  4. ステップ実行: 処理を1ステップずつ追跡
  5. 落とし穴: この種のコードで陥りがちなミス
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. 2d ago First seen · 13 lines · 60 tokens per session scan A 666046cc2494

Subscribe to this mod's changes

explain-code is a skill published in the GitHub repository forest6511/claude-code-recipes-v2 (5 stars, last pushed 4mo ago), licensed MIT. It adds 60 tokens to every session and 176 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.

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