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.
npx skills add xiaohei-info/oh-my-multica --skill diagram-conceptgit clone --depth 1 https://github.com/xiaohei-info/oh-my-multicaWrote 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.
[](https://agentmods.dev/skills/xiaohei-info/oh-my-multica/diagram-concept)<a href="https://agentmods.dev/skills/xiaohei-info/oh-my-multica/diagram-concept"><img src="https://agentmods.dev/badge/skills/xiaohei-info/oh-my-multica/diagram-concept/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.
<a href="https://agentmods.dev/skills/xiaohei-info/oh-my-multica/diagram-concept"><img src="https://agentmods.dev/badge/skills/xiaohei-info/oh-my-multica/diagram-concept.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00167 | $0.04665 |
| Opus 5 | $0.00084 | $0.02332 |
| Sonnet 5 | $0.00033 | $0.00933 |
| Haiku 4.5 | $0.00017 | $0.00466 |
Grade A, and why
diagram-concept 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 12d 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.
This is a copy
98% identical to concept-diagrams — 9 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.
How it starts
The opening of the file, as written. The whole thing — 364 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Concept Diagrams
Generate production-quality SVG diagrams with a unified flat, minimal design system. Output is a single self-contained HTML file that renders identically in any modern browser, with automatic light/dark mode.
Scope
Best suited for:
- Physics setups, chemistry mechanisms, math curves, biology
- Physical objects (aircraft, turbines, smartphones, mechanical watches, cells)
- Anatomy, cross-sections, exploded layer views
- Floor plans, architectural conversions
- Narrative journeys (lifecycle of X, process of Y)
- Hub-spoke system integrations (smart city, IoT networks, electricity grids)
- Educational / textbook-style visuals in any domain
- Quantitative charts (grouped bars, energy profiles)
Look elsewhere first for:
- Dedicated software / cloud infrastructure architecture with a dark tech aesthetic (consider
architecture-diagramif available) - Hand-drawn whiteboard sketches (consider
excalidrawif available) - Animated explainers or video output (consider an animation skill)
If a more specialized skill is available for the subject, prefer that. If none fits, this skill can serve as a general-purpose SVG diagram fallback — the output will carry the clean educational aesthetic described below, which is a reasonable default for almost any subject.
Workflow
- Decide on the diagram type (see Diagram Types below).
- Lay out components using the Design System rules.
- Write the full HTML page using
templates/template.htmlas the wrapper — paste your SVG where the template says<!-- PASTE SVG HERE -->. - Save as a standalone
.htmlfile (for example~/my-diagram.htmlor./my-diagram.html). - User opens it directly in a browser — no server, no dependencies.
Optional: if the user wants a browsable gallery of multiple diagrams, see "Local Preview Server" at the bottom.
Load the HTML template:
skill_view(name="concept-diagrams", file_path="templates/template.html")
The template embeds the full CSS design system (c-* color classes, text classes, light/dark variables, arrow marker styles). The SVG you generate relies on these classes being present on the hosting page.
What ships with it
19 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.
- examples/apartment-floor-plan-conversion.md 9.0 KB
- examples/automated-password-reset-flow.md 15 KB
- examples/autonomous-llm-research-agent-flow.md 12 KB
- examples/banana-journey-tree-to-smoothie.md 6.0 KB
- examples/commercial-aircraft-structure.md 7.3 KB
- examples/cpu-ooo-microarchitecture.md 9.4 KB
- examples/electricity-grid-flow.md 6.7 KB
- examples/feature-film-production-pipeline.md 8.5 KB
- examples/hospital-emergency-department-flow.md 7.7 KB
- examples/ml-benchmark-grouped-bar-chart.md 4.7 KB
- examples/place-order-uml-sequence.md 20 KB
- examples/smart-city-infrastructure.md 6.9 KB
- examples/smartphone-layer-anatomy.md 5.8 KB
- examples/sn2-reaction-mechanism.md 8.0 KB
- examples/wind-turbine-structure.md 15 KB
- references/dashboard-patterns.md 1.8 KB
- references/infrastructure-patterns.md 5.2 KB
- references/physical-shape-cookbook.md 2.0 KB
- templates/template.html 6.6 KB
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.
- 12d ago First seen · 364 lines · 167 tokens per session scan A 4522eafee460
diagram-concept is a skill published in the GitHub repository xiaohei-info/oh-my-multica (26 stars, last pushed 5d ago), licensed MIT. It adds 167 tokens to every session and 4,665 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to concept-diagrams, differing in 9 lines, and is treated as a copy.
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