excalidraw

excalidraw is a skill for Claude Code, Codex from Abruptive/Ankh.md. It costs 37 tokens per session (225 once invoked), scanned A, original, MIT.

A format and workflow for creating hand-drawn-style diagrams as Excalidraw files, which can be opened in the Excalidraw diagram editor.

In plain words
What is it for?
Use it to create architecture diagrams, flowcharts, and concept maps with shapes, labels, and arrows.
Why use it?
It provides a reusable way to represent architecture, processes, and relationships visually instead of explaining them only in text.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for hermes-agent. Also seen: built for hermes-agent.

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.

agentmods
npx agentmods add skills/abruptive/ankh.md/excalidraw
Any agent
npx skills add Abruptive/Ankh.md --skill excalidraw
Clone the repo
git clone --depth 1 https://github.com/Abruptive/Ankh.md

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/abruptive/ankh.md/excalidraw.svg)](https://agentmods.dev/skills/abruptive/ankh.md/excalidraw)
Your own site
<a href="https://agentmods.dev/skills/abruptive/ankh.md/excalidraw"><img src="https://agentmods.dev/badge/skills/abruptive/ankh.md/excalidraw.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 225 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00037 $0.00225
Opus 5 $0.00018 $0.00112
Sonnet 5 $0.00007 $0.00045
Haiku 4.5 $0.00004 $0.00022

Measured 6d ago against content hash d561c05c7ada, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

excalidraw 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 6d 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.

examples/diagram-maker/.agent/skills/creative/excalidraw/SKILL.md · 32 lines

What it actually says

Excalidraw Diagram Skill

Create diagrams by writing Excalidraw element JSON and saving as .excalidraw files. Open at excalidraw.com.

Format

{
  "type": "excalidraw",
  "version": 2,
  "source": "hermes-agent",
  "elements": [ ... ],
  "appState": { "viewBackgroundColor": "#ffffff" }
}

Element types

  • rectangle, ellipse, diamond – shapes
  • arrow – connections
  • text – labels (use containerId to bind to shapes)

Save to any path, e.g. diagram.excalidraw.

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. 6d ago First seen · 32 lines · 37 tokens per session scan A d561c05c7ada

Subscribe to this mod's changes

excalidraw is a skill published in the GitHub repository Abruptive/Ankh.md (74 stars, last pushed 5mo ago), licensed MIT. It adds 37 tokens to every session and 225 once invoked, about $0.0002 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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