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orcanote-whiteboard

orcanote-whiteboard is a skill for Claude Code, Codex from sethyuan/orcanote-agent-skills. It costs 33 tokens per session (3,571 once invoked), scanned A, original, MIT.

A guide for creating Excalidraw whiteboards in Orca Note. Excalidraw is a tool for drawing diagrams, shapes, arrows, and labels.

In plain words
What is it for?
Use it to create diagrams, flowcharts, annotated layouts, and other whiteboards in Orca Note.
Why use it?
It removes the guesswork involved in producing valid, structured whiteboard data that Orca Note can display.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 5repo 2d ago A scan 33 tokens original MIT

Good fit Use it to create diagrams, flowcharts, annotated layouts, and other whiteboards in Orca Note.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard
View source ↗ sethyuan/orcanote-agent-skills
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 sethyuan/orcanote-agent-skills --skill orcanote-whiteboard
Clone the repo
git clone --depth 1 https://github.com/sethyuan/orcanote-agent-skills

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 orcanote-whiteboard

README.md
[![agentmods](https://agentmods.dev/badge/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard/github.svg)](https://agentmods.dev/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard)
Your own site
<a href="https://agentmods.dev/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard"><img src="https://agentmods.dev/badge/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard/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 orcanote-whiteboard

Your own site · 80×15
<a href="https://agentmods.dev/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard"><img src="https://agentmods.dev/badge/skills/sethyuan/orcanote-agent-skills/orcanote-whiteboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,571 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00033 $0.03571
Opus 5.5 $0.00013 $0.01428
Sonnet 5.5 $0.00007 $0.00714
Haiku 4.5 $0.00003 $0.00357

Measured 2mo ago against content hash 8e68bcba306e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

orcanote-whiteboard 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.

skills/orcanote-whiteboard/SKILL.md · 264 lines

How it starts

The opening of the file, as written. The whole thing — 264 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Orca Note Whiteboard (Excalidraw)

This skill provides the syntax, structural rules, and design principles for creating semantically rich and visually appealing whiteboards in Orca Note using the Excalidraw JSON format.

Excalidraw JSON Schema

Whiteboards are defined within whiteboard code blocks.

Core Structure

{
  "elements": [],
  "files": {}
}

Common Element Types

Type Description Key Fields
rectangle Standard rectangle x, y, width, height, strokeColor, backgroundColor, roundness, boundElements
ellipse Circle or oval x, y, width, height, strokeColor, backgroundColor, boundElements
arrow Line or connector points (relative to x,y), startArrowhead, endArrowhead, startBinding, endBinding, elbowed (true for elbow arrows)
line Simple line points
text Text label text, fontSize, fontFamily (5: Hand-drawn, 6: Sans, 8: Monospace), containerId (ID of the shape this text belongs to), x, y, width, height, strokeColor, backgroundColor, textAlign, verticalAlign
embeddable Embedded Orca Note block customData: { "blockId": "ID" }, x, y, width, height, strokeColor, backgroundColor, roundness

Labeling Shapes with Text

To place text inside a shape (like a rectangle or ellipse):

  1. Create the Shape: Give it a unique id.
  2. Create a Text Element:
    • Set its containerId to the shape's id.
    • Set x and y to the container's x and y.
    • Set width and height to fit within the shape's dimensions.
    • Set textAlign and verticalAlign to center the text.
  3. Link back: Add the text element's ID to the shape's boundElements array: { "type": "text", "id": "text_id" }.

Arrow Types

  • Straight Arrow: Standard line. No elbowed field.
  • Elbow Arrow: Set elbowed: true. This creates a right-angled connector.
Arrowheads (startArrowhead / endArrowhead)
  • null: No arrowhead.
  • "arrow", "bar", "dot", "triangle".

Read the full file on GitHub · 264 lines

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 · 264 lines · 33 tokens per session scan A 8e68bcba306e

Subscribe to this mod's changes

orcanote-whiteboard is a skill published in the GitHub repository sethyuan/orcanote-agent-skills (5 stars, last pushed 2d ago), licensed MIT. It adds 33 tokens to every session and 3,571 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

Design and UX
Related

orcanote-whiteboard compared with skills from other repositories

orcanote-whiteboard next to 6 skills from other repositories
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orcanote-whiteboardsethyuan/orcanote-agent-skillsSkill52d agoMITA33Claude Code, Codex
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html-ppt-taste-brutalistnexu-io/open-designSkill106ktodayApache-2.0A78Claude Code, Codex
visual-ralphYeachan-Heo/oh-my-codexSkill34ktodayMITA52Codex
glance-canonical-layoutsandroid/skillsSkill10kyesterdayApache-2.0A56Claude Code
accessibilitymicrosoft/hve-coreSkill1.6ktodayMITA47Claude Code