Borrowing it
Nothing to install: this file belongs to TheSmokeDev/taskchad-os. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/TheSmokeDev/taskchad-os/master/.claude/skills/excalidraw-diagram/SKILL.mdgit clone --depth 1 https://github.com/TheSmokeDev/taskchad-osWrote 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/thesmokedev/taskchad-os/excalidraw-diagram)<a href="https://agentmods.dev/skills/thesmokedev/taskchad-os/excalidraw-diagram"><img src="https://agentmods.dev/badge/skills/thesmokedev/taskchad-os/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/thesmokedev/taskchad-os/excalidraw-diagram"><img src="https://agentmods.dev/badge/skills/thesmokedev/taskchad-os/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 | $0.00034 | $0.05211 |
| Opus 5.5 | $0.00014 | $0.02084 |
| Sonnet 5.5 | $0.00007 | $0.01042 |
| Haiku 4.5 | $0.00003 | $0.00521 |
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 2mo 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
91% identical to excalidraw-diagram — 324 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 — 601 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.
Core Philosophy
Diagrams should ARGUE, not DISPLAY.
A diagram isn't formatted text. It's a visual argument that shows relationships, causality, and flow that words alone can't express. The shape should BE the meaning.
The Isomorphism Test: If you removed all text, would the structure alone communicate the concept? If not, redesign.
The Education Test: Could someone learn something concrete from this diagram, or does it just label boxes? A good diagram teaches—it shows actual formats, real event names, concrete examples.
Depth Assessment (Do This First)
Before designing, determine what level of detail this diagram needs:
Simple/Conceptual Diagrams
Use abstract shapes when:
- Explaining a mental model or philosophy
- The audience doesn't need technical specifics
- The concept IS the abstraction (e.g., "separation of concerns")
Comprehensive/Technical Diagrams
Use concrete examples when:
- Diagramming a real system, protocol, or architecture
- The diagram will be used to teach or explain (e.g., YouTube video)
- The audience needs to understand what things actually look like
- You're showing how multiple technologies integrate
For technical diagrams, you MUST include evidence artifacts (see below).
Research Mandate (For Technical Diagrams)
Before drawing anything technical, research the actual specifications.
If you're diagramming a protocol, API, or framework:
- Look up the actual JSON/data formats
- Find the real event names, method names, or API endpoints
- Understand how the pieces actually connect
- Use real terminology, not generic placeholders
Bad: "Protocol" → "Frontend" Good: "AG-UI streams events (RUN_STARTED, STATE_DELTA, A2UI_UPDATE)" → "CopilotKit renders via createA2UIMessageRenderer()"
Research makes diagrams accurate AND educational.
Evidence Artifacts
Evidence artifacts are concrete examples that prove your diagram is accurate and help viewers learn. Include them in technical diagrams.
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.
- 2mo ago First seen · 601 lines · 34 tokens per session scan A 274c06f7ad95
excalidraw-diagram is a skill published in the GitHub repository TheSmokeDev/taskchad-os (28 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 5,211 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to excalidraw-diagram, differing in 324 lines, and is treated as a copy.
excalidraw-diagram compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| excalidraw-diagramTheSmokeDev/taskchad-os | Skill | 28 | 1mo ago | MIT | A | 34 | Claude Code |
| ui-alignPrismer-AI/PrismerCloud | Skill | 1.4k | 15d ago | MIT | A | 128 | Claude Code |
| design-reviewPrismer-AI/PrismerCloud | Skill | 1.4k | 15d ago | MIT | A | 84 | Claude Code |
| ui-canvasPrismer-AI/PrismerCloud | Skill | 1.4k | 15d ago | MIT | A | 54 | Claude Code |
| web-artifacts-builderPrismer-AI/PrismerCloud | Skill | 1.4k | 15d ago | MIT | A | 63 | Claude Code, Codex |
| graphifymycelium-hq/ai-brain-starter | Skill | 50 | yesterday | MIT | A | 111 | Claude Code |
| setup-brainmycelium-hq/ai-brain-starter | Skill | 50 | yesterday | MIT | A | 66 | Claude Code |