What is code-walkthrough?

An interactive HTML guide that explains a code change, such as a branch, pull request, difference between versions, or subsystem, to someone unfamiliar with it.

Use it to teach or review changes with before-and-after code, diagrams, step-by-step sections, and interactive code examples.

It turns a potentially difficult code review into a self-contained walkthrough with explanations and visual context.

code-walkthrough — Skill for Claude Code and Codex by dashed

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 dashed/claude-marketplace --skill code-walkthrough

Clone the repo

git clone --depth 1 https://github.com/dashed/claude-marketplace

Made for: Claude Code, Codex.

Its marketplace also offers this one on its own, as the plugin code-walkthrough — /plugin install code-walkthrough after adding the marketplace above.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/dashed/claude-marketplace/code-walkthrough/github.svg)](https://agentmods.dev/skills/dashed/claude-marketplace/code-walkthrough)

Your own site

<a href="https://agentmods.dev/skills/dashed/claude-marketplace/code-walkthrough"><img src="https://agentmods.dev/badge/skills/dashed/claude-marketplace/code-walkthrough/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/dashed/claude-marketplace/code-walkthrough"><img src="https://agentmods.dev/badge/skills/dashed/claude-marketplace/code-walkthrough.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,183 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00115	$0.02183
Opus 5.5	$0.00046	$0.00873
Sonnet 5.5	$0.00023	$0.00437
Haiku 4.5	$0.00012	$0.00218

Measured 2mo ago against content hash ac9fd1154cc5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-walkthrough 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 2mo 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.

plugins/code-walkthrough/skills/code-walkthrough/SKILL.md · 111 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

1 file 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.

references/template-shell.html 19 KB

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.

2mo ago First seen · 111 lines · 115 tokens per session scan A ac9fd1154cc5

Subscribe to this mod's changes

code-walkthrough is a skill published in the GitHub repository dashed/claude-marketplace (25 stars, last pushed 16d ago), with no licence file. It adds 115 tokens to every session and 2,183 once invoked, about $0.0005 per session on Opus 5.5. 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.

Learning and teaching

code-walkthrough next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
code-walkthroughdashed/claude-marketplace	Skill	25	16d ago	none	A	115	Claude Code, Codex
hr-onboardingnexu-io/open-design	Skill	106k	yesterday	Apache-2.0	A	62	Claude Code, Codex
book-mirrorgarrytan/gbrain	Skill	32k	yesterday	MIT	A	138	Claude Code
exam-forecastanthropics/claude-for-legal	Skill	9.9k	3d ago	Apache-2.0	A	73	Claude Code
lean-formalizewanshuiyin/Auto-claude-code-research-in-sleep	Skill	19k	3d ago	MIT	A	81	Claude Code
eli5companion-inc/feynman	Skill	10k	6d ago	MIT	A	63	Claude Code, Codex
deck-course-modulenexu-io/html-anything	Skill	9.4k	25d ago	Apache-2.0	A	25	Claude Code, Codex