deck-check

deck-check is a skill for Claude Code from YoungjaeDev/my-claude-plugins. It costs 161 tokens per session (1,719 once invoked), scanned B, original, MIT.

A quality-check workflow for a house-format HTML slide deck. It builds the deck, checks its copy rules, renders slides as images and PDF, and checks layout, fonts, and interactions.

In plain words
What is it for?
It helps verify a deck after editing its sections, shell, animations, or assets and before deployment.
Why use it?
It finds problems that may not be visible in the source files, such as overflow, copy violations, broken rendering, or failed interactions. It also reports whether the deck's copied rules are current.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT variable. Also seen: mentions Claude Code; mentions Codex.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the deck plugin — 7 skills shipped together

Good fit It helps verify a deck after editing its sections, shell, animations, or assets and before deployment.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add YoungjaeDev/my-claude-plugins
Claude Code
/plugin install deck

Made for: Claude Code.

Or install deck, the plugin that ships this one along with the rest of its 7 skills.

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 deck-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/youngjaedev/my-claude-plugins/deck-check/github.svg)](https://agentmods.dev/skills/youngjaedev/my-claude-plugins/deck-check)
Your own site
<a href="https://agentmods.dev/skills/youngjaedev/my-claude-plugins/deck-check"><img src="https://agentmods.dev/badge/skills/youngjaedev/my-claude-plugins/deck-check/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 deck-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/youngjaedev/my-claude-plugins/deck-check"><img src="https://agentmods.dev/badge/skills/youngjaedev/my-claude-plugins/deck-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 161 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,719 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 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 5.1 $0.00161 $0.01719
Opus 5.5 $0.00064 $0.00688
Sonnet 5.5 $0.00032 $0.00344
Haiku 4.5 $0.00016 $0.00172

Measured today against content hash 4c241d5ade69, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

deck-check 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 today.

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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

found=$(find "$HOME/.claude/plugins/cache" "${CODEX_PLUGIN_CACHE:-$HOME/.codex/plugins/cache}" \
plugins/deck/skills/deck-check/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

deck-check

Overview

One QA pass over a house-format deck. Every tool runs from the plugin, against ./deck and the repo's .claude/rules/. Output is a short report: slide count, copy violations, rule-copy status, render and interaction status, and what the rendered PNGs show.

When to use

  • After editing sections, shell.html, motions or assets, and always before deck-deploy.
  • When the user asks whether the deck builds, whether copy rules pass, or whether rule copies are current.
  • Not for a deck that lacks deck/shell.html + deck/sections/ (that is not the house format).

Procedure

Shell state does not persist between tool calls. Put this resolver at the top of every command block below.

PLUGIN_ROOT="${PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-}}"
[ -z "$PLUGIN_ROOT" ] && [ -f plugins/deck/scripts/kit.py ] && PLUGIN_ROOT=plugins/deck
if [ -z "$PLUGIN_ROOT" ]; then
  # find, not a glob: zsh aborts on an unmatched glob and does not split an unquoted list.
  found=$(find "$HOME/.claude/plugins/cache" "${CODEX_PLUGIN_CACHE:-$HOME/.codex/plugins/cache}" \
    -mindepth 3 -maxdepth 3 -type d -path '*/deck/*' 2>/dev/null | awk -F/ '{print $NF "\t" $(0)}')
  if sort -V </dev/null >/dev/null 2>&1; then
    PLUGIN_ROOT=$(printf '%s\n' "$found" | sort -V | tail -1 | cut -f2-)
  else
    PLUGIN_ROOT=$(printf '%s\n' "$found" | sort -t. -k1,1n -k2,2n -k3,3n | tail -1 | cut -f2-)
  fi
fi
[ -f "$PLUGIN_ROOT/scripts/kit.py" ] || { echo "deck plugin scripts not found; export PLUGIN_ROOT=<path to plugins/deck>"; exit 1; }
PY=$(command -v python3 || command -v python)
  1. Build, copy check, rule copies. Run from the repo root (the directory that holds deck/).

    # resolver block above goes here
    # Run every check even after a failure, then fail the block if any of them failed.
    rc=0
    "$PY" "$PLUGIN_ROOT/scripts/build.py" deck || rc=1
    "$PY" "$PLUGIN_ROOT/scripts/check_copy.py" deck || rc=1
    "$PY" "$PLUGIN_ROOT/scripts/kit.py" check . || rc=1
    [ "$rc" -eq 0 ]
    

Read the full file on GitHub · 93 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. today Changed 4c241d5ade69
  2. 13d ago First seen · 93 lines · 161 tokens per session scan B fb297b7013ac

Subscribe to this mod's changes

deck-check is a skill published in the GitHub repository YoungjaeDev/my-claude-plugins (2 stars, last pushed yesterday), licensed MIT. It adds 161 tokens to every session and 1,719 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-06.

Related

Other skills, from other repositories

webgl-holographic-foil

A self-contained WebGL2 hero: thin-film interference over a crushed-foil surface whose palette shifts with the viewing angle; move the cursor to tilt the film.

nexu-io/open-design · 41 tokens

html-ppt-hermes-cyber-terminal

OpenDesign + BYOK: choosing and wiring your own model, hands-on — cost, quality, and the routing decision. Built as a decision-grade AI literacy deck for engineers, IT, applied-AI teams.

nexu-io/open-design · 53 tokens

html-ppt-taste-brutalist

16:9 HTML deck in tactical-telemetry / CRT-terminal taste. Deactivated-CRT charcoal slides, white-phosphor monospace, hazard-red accent, scanline overlay, ASCII syntax, density over decoration. Distilled from Leonxlnx/taste-skill brutalist-skill (Tactical Telemetry mode).

nexu-io/open-design · 78 tokens

visual-ralph

Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ultragoal with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.

Yeachan-Heo/oh-my-codex · 52 tokens

glance-canonical-layouts

Use this skill to create home screen widgets using Jetpack Glance Canonical Layouts from the Android Platform Samples project, or when asked to implement standard widget layout patterns (including Check List, Image Grid, Snap Scrolling, and Standard Toolbar).

android/skills · 56 tokens

accessibility

Consolidated accessibility skill entrypoint for WCAG 2.2, ARIA Authoring Practices, cognitive accessibility, Section 508, EN 301 549, design intent verification, and the Accessibility Planner workflow.

microsoft/hve-core · 47 tokens