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 dwmkerr/claude-toolkit --skill drawio-diagramgit clone --depth 1 https://github.com/dwmkerr/claude-toolkitWrote 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/dwmkerr/claude-toolkit/drawio-diagram)<a href="https://agentmods.dev/skills/dwmkerr/claude-toolkit/drawio-diagram"><img src="https://agentmods.dev/badge/skills/dwmkerr/claude-toolkit/drawio-diagram/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/dwmkerr/claude-toolkit/drawio-diagram"><img src="https://agentmods.dev/badge/skills/dwmkerr/claude-toolkit/drawio-diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00067 | $0.02075 |
| Opus 5 | $0.00034 | $0.01038 |
| Sonnet 5 | $0.00013 | $0.00415 |
| Haiku 4.5 | $0.00007 | $0.00208 |
Grade A, and why
drawio-diagram 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
drawio-diagram
Generate .drawio architecture diagrams with a consistent visual style. Always include a legend. Supports export to PNG, SVG, PDF, and self-contained HTML.
Workflow
- Understand the subject — read source material (repos, docs, README, user description)
- Plan the diagram — identify containers, capabilities, external services, and connections
- Generate the
.drawiofile — use the XML structure and style conventions below - Add a legend — always include a legend row at the top of the diagram
- Export — offer to export to PNG/SVG/PDF via draw.io CLI, or to self-contained HTML
XML Structure
Every .drawio file must follow this structure:
<mxfile host="Electron" version="28.0.6">
<diagram name="Page-1" id="unique-id">
<mxGraphModel dx="1100" dy="760" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1169" pageHeight="827" math="0" shadow="0">
<root>
<mxCell id="0" />
<mxCell id="1" parent="0" />
<!-- All diagram cells use parent="1" -->
</root>
</mxGraphModel>
</diagram>
</mxfile>
For larger diagrams, increase pageWidth and pageHeight as needed (e.g., 1400x900 or 1600x1000).
Element Types and Styles
Container (systems, layers, groupings)
Blue, rounded, bold title top-aligned.
rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;verticalAlign=top;fontSize=10;
Capability (features, components, public)
Green, rounded, bold title with description.
rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontSize=10;verticalAlign=top;
Existing / External (infrastructure, third-party)
Grey, rounded.
rounded=1;whiteSpace=wrap;html=1;fillColor=#f5f5f5;fontColor=#333333;strokeColor=#666666;verticalAlign=top;fontSize=10;
Tech Preview (experimental, private, future)
Purple, rounded.
rounded=1;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#9673a6;fontSize=10;verticalAlign=top;
What ships with it
3 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.
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.
- 10d ago First seen · 243 lines · 67 tokens per session scan A 7c491075631a
drawio-diagram is a skill published in the GitHub repository dwmkerr/claude-toolkit (23 stars, last pushed 4d ago), licensed MIT. It adds 67 tokens to every session and 2,075 once invoked, about $0.0003 per session on Opus 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.
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