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excalidraw-diagrams

excalidraw-diagrams is a skill for Claude Code, Codex from ahostbr/kuroryuu-public. It costs 67 tokens per session (5,584 once invoked), scanned A, original, AGPL-3.0.

A programmatic diagram creator that produces Excalidraw files, which can be opened in Excalidraw or its VS Code extension. It supports flowcharts, architecture diagrams, and system designs.

In plain words
What is it for?
Use it to create editable visuals for software architecture, system designs, and process documentation.
Why use it?
It avoids writing diagrams as plain text or assembling every visual element manually.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 12repo 7mo ago A scan 67 tokens AGPL-3.0

Good fit Use it to create editable visuals for software architecture, system designs, and process documentation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ahostbr/kuroryuu-public/excalidraw-diagrams
View source ↗ ahostbr/kuroryuu-public
Install

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.

Any agent
npx skills add ahostbr/kuroryuu-public --skill excalidraw-diagrams
Clone the repo
git clone --depth 1 https://github.com/ahostbr/kuroryuu-public

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for excalidraw-diagrams

README.md
[![agentmods](https://agentmods.dev/badge/skills/ahostbr/kuroryuu-public/excalidraw-diagrams/github.svg)](https://agentmods.dev/skills/ahostbr/kuroryuu-public/excalidraw-diagrams)
Your own site
<a href="https://agentmods.dev/skills/ahostbr/kuroryuu-public/excalidraw-diagrams"><img src="https://agentmods.dev/badge/skills/ahostbr/kuroryuu-public/excalidraw-diagrams/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.

agentmods 80×15 button for excalidraw-diagrams

Your own site · 80×15
<a href="https://agentmods.dev/skills/ahostbr/kuroryuu-public/excalidraw-diagrams"><img src="https://agentmods.dev/badge/skills/ahostbr/kuroryuu-public/excalidraw-diagrams.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 67 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,584 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00067 $0.05584
Opus 5.5 $0.00027 $0.02234
Sonnet 5.5 $0.00013 $0.01117
Haiku 4.5 $0.00007 $0.00558

Measured 2mo ago against content hash 89382cd0174c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

excalidraw-diagrams scanned grade A with 1 finding 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.

The scan reads SKILL.md. This mod also ships 11 executable files (scripts/create_capability_zip.py, scripts/drive_helper.py, scripts/excalidraw_generator.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run([
ai/skills/excalidraw/skills-sh/excalidraw-diagrams/SKILL.md · 716 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

17 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.

Changes

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.

  1. 2mo ago First seen · 716 lines · 67 tokens per session scan A 89382cd0174c

Subscribe to this mod's changes

excalidraw-diagrams is a skill published in the GitHub repository ahostbr/kuroryuu-public (12 stars, last pushed 7mo ago), licensed AGPL-3.0. It adds 67 tokens to every session and 5,584 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Creative and mediaDesign and UX
Related

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excalidraw-diagrams next to 6 skills from other repositories
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