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Agent skill

Code Tour

by affaan-m in affaan-m/ECC

CodeTour .tourファイルを作成 — ペルソナターゲット、ステップバイステップウォークスルー（実際のファイルとラインアンカー付き）。オンボーディングツアー、アーキテクチャウォークスルー、PRツアー、RCAツアー、構造化「これがどのように機能するかを説明」リクエストに使用。

MITAuto-check passedDevelopment

Install Code Tour

skills CLI
$ npx skills add affaan-m/ECC --skill code-tour -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install affaan-m/ECC code-tour --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/docs/ja-JP/skills/code-tour .claude/skills/code-tour && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
code-tour
GitHub stars
275k
Token cost
~295 tokens
SKILL.md length
48 words
Files
1
Skills in repo
645
Repo updated
First seen
Licence
MIT

At a glance

CodeTour .tourファイルを作成 — ペルソナターゲット、ステップバイステップウォークスルー（実際のファイルとラインアンカー付き）。オンボーディングツアー、アーキテクチャウォークスルー、PRツアー、RCAツアー、構造化「これがどのように機能するかを説明」リクエストに使用。

  • Works in 2 steps: 発見 → 読者を推測
  • Tasks that involve Codebase onboarding
  • SKILL.md covers 使用時期, 使用しないとき, ワークフロー and ツアー形式
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Tour is an agent skill from affaan-m/ECC. CodeTour .tourファイルを作成 — ペルソナターゲット、ステップバイステップウォークスルー（実際のファイルとラインアンカー付き）。オンボーディングツアー、アーキテクチャウォークスルー、PRツアー、RCAツアー、構造化「これがどのように機能するかを説明」リクエストに使用。

Its SKILL.md is about 300 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Codebase onboarding. The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.

When your agent uses it

  • Tasks that involve Codebase onboarding

Example prompts

  • “/code-tour”

Workflow steps

2 steps, taken from the step headings in SKILL.md.

  1. 発見
  2. 読者を推測

What it can do on your machine

Read from SKILL.md and the folder at commit ef648e0. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Tour loads about 295 tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 48 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~38
When it runs · the whole SKILL.md, loaded when a task matches
~295

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from affaan-m/ECC at commit ef648e0, republished under its MIT licence (© affaan-m). 48 words, ~295 tokens.

Download SKILL.mdSave it as .claude/skills/code-tour/SKILL.md (or your agent's skills folder).
name
code-tour
description
CodeTour `.tour`ファイルを作成 — ペルソナターゲット、ステップバイステップウォークスルー（実際のファイルとラインアンカー付き）。オンボーディングツアー、アーキテクチャウォークスルー、PRツアー、RCAツアー、構造化「これがどのように機能するかを説明」リクエストに使用。
origin
ECC

コードツアー

コードベースウォークスルー用のCodeTour .tourファイルを作成し、実際のファイルとラインの範囲に直接開きます。ツアーは.tours/にあり、アドホックなMarkdownノートではなくCodeTour形式を対象としています。

良いツアーは特定の読者への物語：

  • 彼らが何を見ているか
  • なぜそれが重要か
  • 次にどのパスを従うべきか

.tour JSONファイルのみを作成。このスキルの一部としてソースコードを変更しないでください。

使用時期

次の場合にこのスキルを使用：

  • ユーザーがコードツアー、オンボーディングツアー、アーキテクチャウォークスルー、またはPRツアーを求める
  • ユーザーが「Xがどのように機能するかを説明」と言い、再利用可能なガイド付きアーティファクトを望む
  • 新しいエンジニアまたはレビュアーのためのランプアップパス
  • タスクはフラット概要ではなくガイド付きシーケンスでより良くサービスされる

使用しないとき

コードツアーの代わりに使用
一度限りの説明で十分直接答える
ユーザーがプロのドキュメント、.tourアーティファクトではなくドキュメント編集
タスクは実装またはリファクタリング実装作業を行う
広範なコードベースオンボーディングcodebase-onboarding

ワークフロー

1. 発見

何か書く前にリポを探索：

  • READMEとパッケージ/アプリエントリポイント
  • フォルダ構造
  • 関連するコンフィグファイル
  • ツアーがPRフォーカスの場合は変更されたファイル

コードの形状を理解する前にステップを書き始めないでください。

2. 読者を推測

要求からペルソナと深さを決定。

リクエストの形ペルソナ推奨される深さ
「オンボーディング」「新しい参加者」new-joiner9-13ステップ

ツアー形式

Code Tour .tourファイルはJSON形式で、各ステップはファイルパス、ライン番号、説明を含みます。

© affaan-m, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in docs/ja-JP/skills/code-tour of affaan-m/ECC.

Open the folder on GitHubat commit ef648e0

Compare with similar skills

Code Tour next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Tour compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Code Tour this skillaffaan-m/ECC275k—~295Automated safety check: PassMIT
Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything86k1 repos~1.2kAutomated safety check: PassMIT
Understand ExplainEgonex-AI/Understand-Anything86k1 repos~1.3kAutomated safety check: PassMIT
Repomix Codebase Exploreryamadashy/repomix29k1 repos~2.7kAutomated safety check: PassMIT
Code Graph Mermaid Diagramstrailofbits/skills7.4k1 repos~1.7kAutomated safety check: PassCC-BY-SA-4.0
Project Onboarding Guide from Knowledge GraphEgonex-AI/Understand-Anything86k—~1.2kAutomated safety check: PassMIT

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Categories

Questions about Code Tour

What does Code Tour do?

CodeTour .tourファイルを作成 — ペルソナターゲット、ステップバイステップウォークスルー（実際のファイルとラインアンカー付き）。オンボーディングツアー、アーキテクチャウォークスルー、PRツアー、RCAツアー、構造化「これがどのように機能するかを説明」リクエストに使用。. Code Tour is an agent skill from affaan-m/ECC.

When should I use Code Tour?

Code Tour fits situations like: tasks that involve Codebase onboarding.

How do I install Code Tour in Claude Code?

Run `npx skills add affaan-m/ECC --skill code-tour -a claude-code`. Or copy the skill folder (docs/ja-JP/skills/code-tour in affaan-m/ECC) into .claude/skills/code-tour in your project. Claude Code loads it when a task matches its description.

How do I install Code Tour in Codex?

Run `npx skills add affaan-m/ECC --skill code-tour -a codex`. Or copy the skill folder (docs/ja-JP/skills/code-tour in affaan-m/ECC) into .agents/skills/code-tour in your project. Codex loads it when a task matches its description.

Can I use Code Tour in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add affaan-m/ECC --skill code-tour -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-tour, .gemini/skills/code-tour, .github/skills/code-tour and .opencode/skills/code-tour in your project.

What does Code Tour need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Tour is instructions for the agent only.

Does Code Tour access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Code Tour safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Code Tour use?

Code Tour is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Tour use?

About 295 tokens (SKILL.md is roughly 1.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Code Tour?

Skills that share tags, products or a category with Code Tour: Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 86k stars), Understand Explain (Egonex-AI/Understand-Anything, 86k stars), Repomix Codebase Explorer (yamadashy/repomix, 29k stars) and Code Graph Mermaid Diagrams (trailofbits/skills, 7.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Tour?

affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 275,023 GitHub stars. The repository holds 645 skills in this directory. The repository was last updated on October 5, 2026.

Source: affaan-m/ECC on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.