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 isatimur/excalidraw-skill-pack --skill excalidraw-diagramgit clone --depth 1 https://github.com/isatimur/excalidraw-skill-packWrote 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/isatimur/excalidraw-skill-pack/excalidraw-diagram)<a href="https://agentmods.dev/skills/isatimur/excalidraw-skill-pack/excalidraw-diagram"><img src="https://agentmods.dev/badge/skills/isatimur/excalidraw-skill-pack/excalidraw-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/isatimur/excalidraw-skill-pack/excalidraw-diagram"><img src="https://agentmods.dev/badge/skills/isatimur/excalidraw-skill-pack/excalidraw-diagram.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 | $0.00205 | $0.07249 |
| Opus 5 | $0.00102 | $0.03624 |
| Sonnet 5 | $0.00041 | $0.01450 |
| Haiku 4.5 | $0.00020 | $0.00725 |
Grade A, and why
excalidraw-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 11d 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
94% identical to excalidraw-diagram — 4 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 — 536 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Excalidraw Diagram Creator
Generate .excalidraw JSON files that argue visually, not just display information.
Editable forever. Themeable. Renderable to PNG. Open in Excalidraw, Obsidian, or VS Code. Twenty-nine typed layouts with progressive disclosure, a first-run brand gate, a taste gate that deletes until the argument is sharp, and a mandatory render-inspect loop — so the diagram is never “done” until it looks right.
Setup: If the user asks you to set up this skill (renderer, dependencies, etc.), use the installed adapter docs or the project README.
0. First-run theme gate
Before generating the first diagram in a new project, verify the theme is intentional.
Resolve the active theme (--theme → project .excalidraw-skill-pack.json → ~/.excalidraw-skill-pack/config.json → default-sketchy). If the project still rides the bundled default and the user has a brand, pause and ask:
"This project is still on
default-sketchy. Customize the theme to match your brand first? (a) pull from a website URL, (b) extract from an installed skill, (c) extract from a local design-token folder, (d) paste tokens manually, (e) proceed with the default for now."
Then follow references/onboarding.md. Once onboarded (project config points at a theme, or the user explicitly chose default), skip this gate.
Don't silently ship default-skinned diagrams into a branded project.
Output Contract
When you create or edit a diagram:
- Produce a valid
.excalidraw/excalidraw-skeleton/mermaiddocument, not a prose-only answer. - Prefer skeleton format while drafting; hydrate to a full
.excalidrawfor the shareable deliverable. - If the user names an output path, write there. Otherwise use
./diagram.excalidraw. - Prefer the active theme for all color, typography, element, and layout decisions — read its
palette.mdbefore drawing. - Pick a diagram type from
references/types/index.mdand load that type's reference before generating elements. - Run the taste gate in
references/taste-gate.mdbefore declaring done. - Render and inspect the PNG. Fix visible defects. Loop until it passes.
- In the final response, report the
.excalidrawpath, rendered image path if created, theme used, type used, and any validation caveats.
What ships with it
2 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.
- 11d ago First seen · 536 lines · 205 tokens per session scan A e0fd15a08e62
excalidraw-diagram is a skill published in the GitHub repository isatimur/excalidraw-skill-pack (4 stars, last pushed yesterday), licensed MIT. It adds 205 tokens to every session and 7,249 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 0 findings. It is 94% identical to excalidraw-diagram, differing in 4 lines, and is treated as a copy.
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