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sandbox

100 / 100 · Low risk

Fine to try.

By arla6ka/design.how (GitHub) · design · 315 stars · scanned at commit 419fa5a

Builds a three.js halftone shader in which an image or a playing video is cut into a grid of cells, each cell's brightness is bucketed into four bands, and every band stamps its own small symbol tinted with its own colour, so the picture is rebuilt out of marks, with preset looks, a palette and glyph crossfade, PNG export and WebM recording. Use when someone asks for a halftone or symbol mosaic, a glyph or emoji dither, an ASCII-like video filter, a pattern stamp effect on video, or a live imag…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'sandbox' ] || [ -L ~/.agents/skills/'sandbox' ]; then echo 'A skill folder named sandbox already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/arla6ka/design.how' "$d" && git -C "$d" checkout --quiet '419fa5af1721eebfab9e0062a630de36ffd0b342' -- 'vault/sandbox/skill' && mkdir -p ~/.agents/skills && cp -R "$d"/'vault/sandbox/skill' ~/.agents/skills/'sandbox' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'sandbox' ~/.claude/skills/'sandbox' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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