diagram-design

diagram-design is a plugin for Claude Code from nikeyes/stepwise-dev. Its manifest loads nothing; the 1 skill, 5 commands it bundles cost 266 tokens per session together, scanned A, a copy of diagram-design, Apache-2.0.

A diagram-making add-on for creating architecture diagrams, flowcharts, data models, charts, timelines, and many other visual formats. It can produce standalone HTML, SVG, or PNG files and redraw sources from draw.io or Mermaid.

In plain words
What is it for?
It helps document software architecture, processes, databases, dependencies, deployments, project plans, and data. It can also turn draw.io or Mermaid files into diagrams sized for documents, slides, or other uses.
Why use it?
It removes the need to build these diagrams by hand or convert between common diagram formats yourself. It can also apply a consistent visual style and branding to the output.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It helps document software architecture, processes, databases, dependencies, deployments, project plans, and data. It can also turn draw.io or Mermaid files into diagrams sized for documents, slides, or other uses.

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Install in Claude Code
/plugin marketplace add nikeyes/stepwise-dev/plugin install diagram-design
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.

Clone the repo
git clone --depth 1 https://github.com/nikeyes/stepwise-dev

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/plugins/nikeyes/stepwise-dev/diagrams/github.svg)](https://agentmods.dev/plugins/nikeyes/stepwise-dev/diagrams)
Your own site
<a href="https://agentmods.dev/plugins/nikeyes/stepwise-dev/diagrams"><img src="https://agentmods.dev/badge/plugins/nikeyes/stepwise-dev/diagrams/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/plugins/nikeyes/stepwise-dev/diagrams"><img src="https://agentmods.dev/badge/plugins/nikeyes/stepwise-dev/diagrams.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill, 5 commands cost 266 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 94% copy Near-identical to another mod in the catalogue.
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 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.

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.

Origin

This is a copy

94% identical to diagram-design — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

diagrams/.claude-plugin/plugin.json · 26 lines

What it actually says

{
  "name": "diagram-design",
  "description": "Create branded architecture, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar chart (polar/radial lollipop), loop/flywheel, nested, tree, org chart, layer stack, Venn, pyramid/funnel, treemap, bar, line, Gantt and scatter charts, high-level, process, medallion, data flow, DP integration, DP security matrix, sankey, fishbone, Wardley map, kanban, user journey, deployment, dependency graph, UML class, story map, or database schema diagrams as standalone HTML/SVG/PNG. Redraw .drawio/.drawio.png/.drawio.svg or Mermaid .mmd sources at a chosen size/detail; onboard brand tokens from a website; add semantic patterns, callouts, accessible motion, or sketchy/hand-drawn styling.",
  "version": "2.6.17",
  "author": {
    "name": "Cathryn Lavery",
    "url": "https://github.com/cathrynlavery"
  },
  "homepage": "https://github.com/cathrynlavery/diagram-design",
  "repository": "https://github.com/cathrynlavery/diagram-design",
  "license": "MIT",
  "keywords": [
    "diagrams",
    "svg",
    "architecture",
    "flowchart",
    "visualization",
    "editorial",
    "drawio",
    "mermaid",
    "import",
    "animation",
    "semantic-patterns"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 5 commands travel with it, and installing the plugin installs all of them — 266 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json 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. today First seen · 26 lines scan A ed23938af16b

Subscribe to this mod's changes

diagram-design is a plugin published in the GitHub repository nikeyes/stepwise-dev (24 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. It is 94% identical to diagram-design, differing in 0 lines, and is treated as a copy.

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