Whiteboard

What it does

When your agent uses it

• A reference video
• Brief calls for a whiteboard animation
• VideoScribe-style explainer
• Doodle / sketch-note / marker-drawing / notebook-doodle look

Example prompts

• “/whiteboard”

Requirements

• Node.js
• A Bash shell

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

1. 1Scaffold: bash .claude/skills/whiteboard/scripts/new_project.sh (--keep-demo keeps the demo
2. 2Plan the board. Whiteboard films are planned as a BIG BOARD: decide where each idea is drawn in world
3. 3Build one IIFE file per shot/chapter in src/scenes/, ending with shots([[t0, fn], ...]); add its
4. 4Look (from the project dir), open every image with Read
5. 5Render: node render.mjs --frames --workers=4 && node render.mjs --encode --out=out/video.mp4 [--audio=...]

What it can do on your machine

Read from SKILL.md and the folder at commit 73492b0. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/ (JavaScript and Shell, from the files we listed), which the agent can run.

  Shell commands in SKILL.md call:

  • node
  • bash
  • npm

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use npm, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Whiteboard loads about 1.9k tokens when it runs. Until then it costs about 188 tokens; SKILL.md has 726 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~188

When it runs · the whole SKILL.md, loaded when a task matches

~1.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from edenfunf/reelmimic at commit 73492b0, republished under its MIT licence (© edenfunf). 726 words, ~1,922 tokens.

name

whiteboard

description

Make hand-drawn whiteboard / doodle-explainer / sketch-note animation videos (MP4) with code — marker lines that draw themselves on, a cartoon hand holding a marker that follows the pen tip, handwritten text (Latin + CJK) written left to right, hatching and highlighter fills, arrows/circles/callouts/icons, two doodle characters (Bo the kid, Mochi the cat), camera pans across a big board, eraser wipes and page flips. Canvas 2D rendered frame by frame in headless Chrome, encoded with ffmpeg. Use when a reference video or brief calls for a whiteboard animation, VideoScribe-style explainer, doodle / sketch-note / marker-drawing / notebook-doodle look, 白板動畫 / 手繪解說 / 塗鴉解說 / 手寫字, or when the video-clone router picks the whiteboard style.

function shot(t, lt, dur) {                                   // lt = time in this shot
  wbBegin(lt, { cam: [[0, [900, 540, 1.1]], [2, [1400, 560, 1]]], bg: { kind: 'white' } });   // clock + camera + board
  const box = writeOn('Save time 省時間', 300, 300, .2, 1.2, { size: 110, col: INK.blue });    // handwriting
  drawOn(S.underline(box.x, box.y2 + 4, box.w, { col: INK.orange }), 1.25, 1.5);              // strokes, drawn on
  drawOn([...ICON.clock(600, 620, 220), ...S.arrow(760, 620, 1000, 600)], 1.6, 2.6);           // icons + arrow
  bo(1300, 940, 40, { face: 'happy', draw: [2.7, 3.8], hold: { R: 'coin' } });                // character, drawn on
  camEnd(); eraseWipe(seg(lt, dur - .8, dur));                                                // transition (screen space)
}
wbCaptions([[.3, 4, '每天*省下*一小時']]);                                                   // overlay captions

© edenfunf, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 18 other files (scripts) in .claude/skills/whiteboard of edenfunf/reelmimic.

• SKILL.md
• GUIDE.md
• docs/demo-sheet.jpg
• docs/faces.jpg
• docs/kit.jpg
• docs/poses.jpg
• scripts/new_project.sh
• template/.gitignore
• template/LICENSE-render.mjs.txt
• template/package-lock.json
• template/package.json
• template/render.mjs
• template/src/cast.js
• template/src/config.js
• template/src/kit.js
• template/src/scenes/demo.js
• … and 3 more

Open the folder on GitHubat commit 73492b0