Agent skill

Tech Diagram

by thatrebeccarae in thatrebeccarae/claude-marketing

Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files.

MITAuto-check passedFrontend & Design

Install Tech Diagram

skills CLI
$ npx skills add thatrebeccarae/claude-marketing --skill tech-diagram -a claude-code

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

GitHub CLI
$ gh skill install thatrebeccarae/claude-marketing tech-diagram --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/thatrebeccarae/claude-marketing.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/tech-diagram .claude/skills/tech-diagram && 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
tech-diagram
GitHub stars
162
Token cost
~1.1k tokens
SKILL.md length
369 words
Files
4
Skills in repo
55
Repo updated
First seen
Licence
MIT

At a glance

Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files.

  • Works in 5 steps: One concept per diagram. If it needs two… → Labels on everything. Every box, arrow,… → Consistent spacing. Use CSS grid or… → …
  • The user needs architecture diagrams
  • SKILL.md covers Install, Core Capabilities, Design System and Component Library, plus 3 more sections
  • Calls git

What it does

Tech Diagram is an agent skill from thatrebeccarae/claude-marketing. Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files. Uses a dark-mode design system with embedded CSS and inline SVG. Use when the user needs architecture diagrams, system illustrations, flow charts, or technical visualizations.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `EXAMPLES.md` and `REFERENCE.md`).

It sits in Frontend & Design, covering Diagrams, Design systems and Theming and dark mode. The repository describes itself as: A full marketing department for Claude Code. Skill packs for Klaviyo, Shopify, GA4, Looker Studio, paid media, and more. Audit, optimize, and report using natural language. The licence is MIT.

When your agent uses it

  • The user needs architecture diagrams
  • System illustrations
  • Technical visualizations

Example prompts

  • “/tech-diagram”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. One concept per diagram. If it needs two diagrams, make two files.
  2. Labels on everything. Every box, arrow, and region should be labeled.
  3. Consistent spacing. Use CSS grid or flexbox, not absolute positioning.
  4. No external deps. Everything inline — CSS in , icons as inline SVG.
  5. Print-friendly. Include @media print with light background override.

What it can do on your machine

Read from SKILL.md and the folder at commit a8a63ec. 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

    Shell commands in SKILL.md call:

    • git

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

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    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

Tech Diagram loads about 1.1k tokens when it runs. Until then it costs about 80 tokens; SKILL.md has 369 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~80
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k

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 thatrebeccarae/claude-marketing at commit a8a63ec, republished under its MIT licence (© thatrebeccarae). 369 words, ~1,111 tokens.

Download SKILL.mdSave it as .claude/skills/tech-diagram/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
tech-diagram
description
Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files. Uses a dark-mode design system with embedded CSS and inline SVG. Use when the user needs architecture diagrams, system illustrations, flow charts, or technical visualizations.
license
MIT
origin
custom
author
Rebecca Rae Barton
author_url
https://github.com/thatrebeccarae
metadata.version
1.0.0
metadata.category
creative
metadata.domain
design
metadata.updated
2026-03-13
metadata.tested
2026-03-17
metadata.tested_with
Claude Code v2.1

Technical Diagram Generator

Generate technical architecture diagrams and system illustrations as standalone HTML files with embedded CSS + inline SVG. No external dependencies.

Install

bash
git clone https://github.com/thatrebeccarae/claude-marketing.git && cp -r claude-marketing/skills/tech-diagram ~/.claude/skills/

Core Capabilities

  • Pipeline flow diagrams (data pipelines, CI/CD, ETL)
  • Layer/stack diagrams (tech stack, OSI model, infrastructure)
  • Component diagrams (microservices, system architecture)
  • Before/after split comparisons
  • Timeline diagrams (roadmaps, migration phases)
  • Metric callout rows (KPI summaries)

Design System

Color Tokens
css
:root {
  /* Dark mode (default canvas) */
  --bg-deep: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #21262d;
  --border-subtle: rgba(240, 246, 252, 0.1);
  --text-bright: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;

  /* Accent palette */
  --accent-blue: #58a6ff;
  --accent-green: #3fb950;
  --accent-purple: #bc8cff;
  --accent-orange: #d29922;
  --accent-red: #f85149;
  --accent-cyan: #39d2c0;
  --accent-pink: #f778ba;

  /* Light mode (optional, for embedded diagrams) */
  --bg-light: #ffffff;
  --bg-light-surface: #f6f8fa;
  --text-light-primary: #1f2328;
  --text-light-secondary: #656d76;
}
Color Rules
  • Dark mode is default for all diagrams
  • Each pipeline stage or layer gets a distinct accent color
  • Use --text-secondary for labels and annotations
  • Use --border-subtle for connecting lines and borders
  • Semantic colors: green = healthy/success, red = error/alert, orange = warning
Typography
RoleFontWeightSize
Diagram titlesystem-ui60028-32px
Section/stage labelsystem-ui60016-18px
Description textsystem-ui40013-14px
Annotationmonospace40012px
Metric valuemonospace70036-48px
Canvas
Width:  1200px (default, responsive down to 800px)
Height: auto (content-driven)
Padding: 48px

Component Library

Pipeline Flow

Horizontal or vertical sequence of stages with connecting arrows. Each stage has an icon area, label, and description.

Layer/Stack Diagram

Vertical stack of labeled layers with optional descriptions. Top = highest abstraction, bottom = lowest.

Component Diagram

Grid or freeform layout of service boxes with connection lines. Each component shows name, tech, and status.

Before/After Split

Side-by-side comparison with a vertical divider. Left = before state, right = after state.

Timeline

Horizontal or vertical sequence of milestones with dates, descriptions, and status indicators.

Show full SKILL.md (155 more words)Show less
Metric Callout Row

Horizontal row of KPI cards with large numbers, labels, and optional trend indicators.

Key Principles

  1. One concept per diagram. If it needs two diagrams, make two files.
  2. Labels on everything. Every box, arrow, and region should be labeled.
  3. Consistent spacing. Use CSS grid or flexbox, not absolute positioning.
  4. No external deps. Everything inline — CSS in <style>, icons as inline SVG.
  5. Print-friendly. Include @media print with light background override.

Anti-Patterns

  • No raster images (PNG/JPG) — use inline SVG for all icons
  • No external CSS/JS — everything embedded
  • No gradients as primary fill — use flat colors with subtle borders
  • No more than 8 items in a single row — wrap or use grid
  • No decorative elements that do not convey information

File Conventions

  • Filename: {project}-{diagram-type}.html (e.g., pipeline-architecture.html)
  • Single file: All CSS inline in <style>, all SVG inline
  • Responsive: Works at 800-1400px width range

For complete HTML/CSS patterns and full examples, see REFERENCE.md.

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

Files

SKILL.md and 3 other files in skills/tech-diagram of thatrebeccarae/claude-marketing.

  • SKILL.md
  • EXAMPLES.md
  • LICENSE
  • REFERENCE.md

Open the folder on GitHubat commit a8a63ec

Compare with similar skills

Tech Diagram 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.

Tech Diagram compared with similar skills
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Concept DiagramsTommy-yw/RunbookHermes5463 repos~4.3kAutomated safety check: PassMIT
Fin Generative UIcriptogus/agent-evolve-network288—~972Automated safety check: PassMIT
Impeccablebestofjs/bestofjs3.1k27 repos~2.6kAutomated safety check: PassMIT

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Questions about Tech Diagram

What does Tech Diagram do?

Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files. Tech Diagram is an agent skill from thatrebeccarae/claude-marketing. Generate technical architecture diagrams, pipeline flows, layer/stack diagrams, and system illustrations as standalone HTML files.

When should I use Tech Diagram?

Tech Diagram fits situations like: the user needs architecture diagrams; system illustrations; technical visualizations.

How do I install Tech Diagram in Claude Code?

Run `npx skills add thatrebeccarae/claude-marketing --skill tech-diagram -a claude-code`. Or copy the skill folder (skills/tech-diagram in thatrebeccarae/claude-marketing) into .claude/skills/tech-diagram in your project. Claude Code loads it when a task matches its description.

How do I install Tech Diagram in Codex?

Run `npx skills add thatrebeccarae/claude-marketing --skill tech-diagram -a codex`. Or copy the skill folder (skills/tech-diagram in thatrebeccarae/claude-marketing) into .agents/skills/tech-diagram in your project. Codex loads it when a task matches its description.

Can I use Tech Diagram 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 thatrebeccarae/claude-marketing --skill tech-diagram -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/tech-diagram, .gemini/skills/tech-diagram, .github/skills/tech-diagram and .opencode/skills/tech-diagram in your project.

What does Tech Diagram need to run?

Going by SKILL.md and its folder, Tech Diagram needs the command-line tools its instructions call (git).

Does Tech Diagram access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Tech Diagram 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 Tech Diagram use?

Tech Diagram is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Tech Diagram use?

About 1.1k tokens (SKILL.md is roughly 4.4k 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 Tech Diagram?

Skills that share tags, products or a category with Tech Diagram: Visualize (display-dev/visualize, 136 stars), Generative UI (himself65/finance-skills, 3.4k stars), Concept Diagrams (Tommy-yw/RunbookHermes, 546 stars) and Fin Generative UI (criptogus/agent-evolve-network, 288 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Tech Diagram?

thatrebeccarae (a GitHub user) maintains it in thatrebeccarae/claude-marketing, which has 162 GitHub stars. The repository holds 55 skills in this directory. The repository was last updated on May 14, 2026.

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