cmd-art

A Python tool for creating terminal animations and colored ASCII artwork, such as spinning shapes, matrix rain, fire, and banners. ASCII art uses text characters to form pictures or effects in a terminal.

In plain words
What is it for?
Rendering terminal effects, static title banners, color gradients, and images converted to ASCII, or adding a new console effect as a separate file.
Why use it?
It provides reusable effects and a common rendering system, so developers do not need to build each console animation from scratch.

Skill for Claude CodeCodex

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/dwgx/smartcli/cmd-art
Any agent
npx skills add dwgx/SmartCLI --skill cmd-art
Clone the repo
git clone --depth 1 https://github.com/dwgx/SmartCLI

Made for: Claude Code, Codex.

Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,116 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 $0.00133 $0.04116
Opus 5 $0.00067 $0.02058
Sonnet 5 $0.00027 $0.00823
Haiku 4.5 $0.00013 $0.00412

Measured 2d ago against content hash aaa82d3ecedc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cmd-art 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 2d ago.

The scan reads SKILL.md. This mod also ships 44 executable files (fx/__init__.py, fx/__main__.py, fx/_noiselib.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/cmd-art/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

cmd-art

Render and design terminal visual effects with fx, a living-template engine: an Effect ABC + a @register decorator + pkgutil auto-discovery, so effects, themes, and multi-effect shows all compose. Pure Python stdlib (optional pyfiglet for fonts, PIL for real images). Truecolor + ANSI, tuned for Windows Terminal but works on any VT-capable terminal.

When to use

  • User asks for a terminal/CMD animation or ANSI art: "spinning ball", "donut", "matrix rain", "plasma", "fire", "game of life", "3D title", "rainbow banner", "starfield", "tunnel", "fireworks".
  • User wants a static ASCII title/banner with a color gradient, or an image turned into ASCII.
  • User wants to invent a new console effect (drop one file in fx/effects/).

The 30 effects (registry names)

Run python -m fx list for the live catalog. Names + aliases as registered:

name kind what aliases
sphere anim rotating Lambert-shaded 3D ball ("spinning ball")
donut anim THE spinning ASCII torus (Sloane donut.c)
solarsystem anim orrery: planets on elliptical orbits round a pulsing sun orrery, planets
cube anim rotating wireframe cube
tunnel anim demoscene tunnel fly-through
starfield anim perspective starfield warp
plasma anim full-screen sine interference field wave
julia anim animated Julia-set fractal (morphing c) juliaset
mandelbrot anim infinite zoom into the Mandelbrot set mandel
perlin anim flowing Perlin gradient-noise field (clouds) noise, clouds
flames anim noise-convection fire, black-body color (vs cellular fire) firefield, bonfire
water anim water surface: sum-of-sines swell + caustic net ocean, waves
nebula anim domain-warped gas nebula: filaments, multi-color, stars galaxy, cosmos
spectrum_bars anim audio-style spectrum meter: log bins, gravity smoothing, eighth-blocks spectrum, bars
text_flyin anim text intro: characters fly in and land flyin
text_converge anim text intro: characters converge from a scattered cloud converge
text_decrypt anim text intro: cells churn glyphs, then lock to the word decrypt_text
fire anim demoscene fire (heat buffer + cooling)
rain anim matrix digital rain
life anim Conway's Game of Life, toroidal game_of_life
boids anim Reynolds flocking
cbonsai anim procedural ASCII bonsai grown by a stochastic branching turtle
fireworks anim rising shells → gravity sparks
sparkle anim dim text under bright glints
text3d anim* big figlet/block banner, gradient; shimmer animates banner
gradient_text anim lolcat rainbow / theme-gradient text lolcat
banner_scroll anim scrolling figlet marquee marquee
typewriter anim char-by-char reveal with a cursor
decrypt anim scramble-to-plaintext reveal
image2ascii static image → half-block truecolor / ASCII ramp img

Read the full file on GitHub · 197 lines

Files

What ships with it

46 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2d ago First seen · 197 lines · 133 tokens per session scan A aaa82d3ecedc

Subscribe to this mod's changes

cmd-art is a skill published in the GitHub repository dwgx/SmartCLI (3 stars, last pushed 23d ago), licensed MIT. It adds 133 tokens to every session and 4,116 once invoked, about $0.0007 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 2026-08-31.

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