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slide-master: Skill for Claude Code

.claude/skills/diagram-design/SKILL.md

diagram-design is a skill for Claude Code from byungjunjang/slide-master. It costs 77 tokens per session (2,247 once invoked), scanned A, original, MIT.

A reference guide for designing fourteen kinds of diagrams, including flowcharts, timelines, sequence diagrams, trees, and architecture diagrams. In this setup it is guidance for creating diagrams in presentation slides, not a standalone web-page generator.

In plain words
What is it for?
Use it when hand-authoring diagram slides and deciding how to arrange nodes, connections, labels, and visual structure.
Why use it?
It helps keep diagram layouts readable and appropriate to the relationship being shown. It also clarifies how this reference is used within the presentation workflow.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths.

This is byungjunjang/slide-master's own configuration. It tells Claude Code how to work on slide-master itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything slide-master configures →

not rated 304repo +3 changed 1mo ago A scan SkillSpector: pass 77 tokens original MIT
View source ↗ byungjunjang/slide-master
Reuse

Borrowing it

Nothing to install: this file belongs to byungjunjang/slide-master. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/byungjunjang/slide-master/main/.claude/skills/diagram-design/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/byungjunjang/slide-master

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 diagram-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/byungjunjang/slide-master/diagram-design/github.svg)](https://agentmods.dev/skills/byungjunjang/slide-master/diagram-design)
Your own site
<a href="https://agentmods.dev/skills/byungjunjang/slide-master/diagram-design"><img src="https://agentmods.dev/badge/skills/byungjunjang/slide-master/diagram-design/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 diagram-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/byungjunjang/slide-master/diagram-design"><img src="https://agentmods.dev/badge/skills/byungjunjang/slide-master/diagram-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,247 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00077 $0.02247
Opus 5.5 $0.00031 $0.00899
Sonnet 5.5 $0.00015 $0.00449
Haiku 4.5 $0.00008 $0.00225

Measured 1mo ago against content hash e37672dfd1eb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

diagram-design 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 1mo 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.

.claude/skills/diagram-design/SKILL.md · 189 lines

How it starts

The opening of the file, as written. The whole thing — 189 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Diagram Design

ppt-master integration note: This skill is vendored as a reference library. In this repo, diagram slides are hand-authored by ppt-master's Executor as SVG pages in svg_output/ — not emitted as standalone HTML. Do NOT run the URL onboarding flow (references/onboarding.md) or the upstream style-guide gate; colors, fonts, and icons always come from the project's spec_lock.md, and the SVG must obey ppt-master's technical constraints (.claude/skills/ppt-master/references/shared-standards.md). The guidance below is upstream context — read it for per-type layout conventions, node/edge discipline, and complexity budgets, then author the page per ppt-master SKILL.md Step 6.

The upstream onboarding / one-time-setup / standalone-HTML-export sections (§0 style-guide gate, §5 Design System skinning, §6 HTML-skin SVG primitives, §7 page layout, §8 summary cards, §10 templates & variants, §11 HTML output) are preserved verbatim in references/diagram-onboarding-legacy.md — upstream provenance record only, never executed in ppt-master.

Fourteen diagram types. One shared design system, complexity budget, and taste gate. Type-specific conventions live in references/ and are loaded only when you pick a type.

1. Philosophy

The highest-quality move is usually deletion.

From .impeccable.md: "Confident restraint. Earn every element. One color accent, two families, a small spacing vocabulary. If removing it wouldn't hurt the page, remove it."

Applied to schematics:

  • Every node represents a distinct idea. Two nodes that always travel together are one node.
  • Every connection carries information. If the relationship is obvious from layout, remove the line.
  • The accent color (spec_lock.colors) is editorial, not a flag. 1–2 focal nodes per diagram. Using it on 5 nodes erases the signal.
  • The schematic isn't done when everything is added. It's done when nothing can be removed.

Read the full file on GitHub · 189 lines

Files

What ships with it

60 files 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.

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. 1mo ago Changed · -3 lines e37672dfd1eb
  2. 2mo ago First seen · 192 lines · 77 tokens per session scan A 9ecf90e39533

Subscribe to this mod's changes

diagram-design is a skill published in the GitHub repository byungjunjang/slide-master (304 stars, last pushed 11d ago), licensed MIT. It adds 77 tokens to every session and 2,247 once invoked, about $0.0003 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.

Design and UX
Related

diagram-design compared with skills from other repositories

diagram-design next to 6 skills from other repositories
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diagram-designbyungjunjang/slide-masterSkill30411d agoMITA77Claude Code
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html-ppt-hermes-cyber-terminalnexu-io/open-designSkill106kyesterdayApache-2.0A53Claude Code, Codex
html-ppt-taste-brutalistnexu-io/open-designSkill106kyesterdayApache-2.0A78Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codexSkill34k3d agoMITA52Codex
glance-canonical-layoutsandroid/skillsSkill10kyesterdayApache-2.0A56Claude Code
accessibilitymicrosoft/hve-coreSkill1.6kyesterdayMITA47Claude Code