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ascii-backdrop

100 / 100 · Low risk

Fine to try.

By majiayu000/spellbook (GitHub) · coding · 291 stars · scanned at commit 238e076

Turn any subject into an animated ASCII backdrop behind a UI, like a dark prompt page with jellyfish drawn in drifting characters, or a swarm of colour-tile bodies that veer away from the cursor. The subject is open-ended: creatures, objects, particles, smoke, a word or logo, an image or video, a per-pixel field, a shaded 3D solid, or your own canvas draw function. Six print modes can be mixed: brightness glyphs, edge-following glyphs, shape-matched glyphs, braille dots, ordered-dither dots and…

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/'ascii-backdrop' ] || [ -L ~/.agents/skills/'ascii-backdrop' ]; then echo 'A skill folder named ascii-backdrop already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/majiayu000/spellbook' "$d" && git -C "$d" checkout --quiet '238e07625aeca5bcf0d6f7cb3e2d07f94c717194' -- 'skills/ascii-backdrop' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/ascii-backdrop' ~/.agents/skills/'ascii-backdrop' && 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/'ascii-backdrop' ~/.claude/skills/'ascii-backdrop' (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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