Art

Art is a skill for Claude Code, Codex from danielmiessler/LifeOS. It costs 124 tokens per session (6,089 once invoked), scanned A, original, MIT.

A tool for creating static visual content in formats such as diagrams, infographics, dashboards, comics, icons, and wallpapers. It supports several image-generation models.

In plain words
What is it for?
Use it to make technical diagrams, architecture visuals, flowcharts, blog headers, social thumbnails, illustrations, and other listed visual formats.
Why use it?
It gives developers a way to create visual assets from written descriptions instead of preparing each image manually. The input describes static output rather than interactive applications.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit Use it to make technical diagrams, architecture visuals, flowcharts, blog headers, social thumbnails, illustrations, and other listed visual formats.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/danielmiessler/lifeos/art
About the project

LifeOS is an AI-assisted personal operating system that records a person’s goals, values, context, and current situation to help move them toward a desired future state. It supports work such as building applications, starting businesses, and creative projects. Its catalogue entries extend the system through skills, hooks, agents, and commands.

danielmiessler/LifeOS · 19,534 stars · on GitHub · ourlifeos.ai

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 danielmiessler/LifeOS --skill art
Clone the repo
git clone --depth 1 https://github.com/danielmiessler/LifeOS

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 Art

README.md
[![agentmods](https://agentmods.dev/badge/skills/danielmiessler/lifeos/art/github.svg)](https://agentmods.dev/skills/danielmiessler/lifeos/art)
Your own site
<a href="https://agentmods.dev/skills/danielmiessler/lifeos/art"><img src="https://agentmods.dev/badge/skills/danielmiessler/lifeos/art/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 Art

Your own site · 80×15
<a href="https://agentmods.dev/skills/danielmiessler/lifeos/art"><img src="https://agentmods.dev/badge/skills/danielmiessler/lifeos/art.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 124 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,089 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Snyk pass 7 Sept 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 28
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
  • medium Rogue Agent · line 254
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 $0.00124 $0.06089
Opus 5.5 $0.00050 $0.02436
Sonnet 5.5 $0.00025 $0.01218
Haiku 4.5 $0.00012 $0.00609

Measured 1mo ago against content hash 8d58e1c1c8f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Art scanned grade A with 1 finding 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 1mo ago.

The scan reads SKILL.md. This mod also ships 9 executable files (Lib/discord-bot.ts, Lib/midjourney-client.ts, Tools/ComposeThumbnail.ts, …), 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -X POST http://localhost:31337/notify \
LifeOS/install/skills/Art/SKILL.md · 362 lines

How it starts

The opening of the file, as written. The whole thing — 362 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Art Skill

Customization

Before executing, check for user customizations at: ~/.claude/LIFEOS/USER/CUSTOMIZATIONS/SKILLS/Art/

If this directory exists, load and apply:

  • PREFERENCES.md - Aesthetic preferences, default model, output location
  • CharacterSpecs.md - Character design specifications
  • SceneConstruction.md - Scene composition guidelines

These override default behavior. If the directory does not exist, proceed with skill defaults.

🚨 MANDATORY: Voice Notification (REQUIRED BEFORE ANY ACTION)

You MUST send this notification BEFORE doing anything else when this skill is invoked.

  1. Send voice notification:

    curl -s -X POST http://localhost:31337/notify \
      -H "Content-Type: application/json" \
      -d '{"message": "Running the WORKFLOWNAME workflow in the Art skill to ACTION"}' \
      > /dev/null 2>&1 &
    
  2. Output text notification:

    Running the **WorkflowName** workflow in the **Art** skill to ACTION...
    

This is not optional. Execute this curl command immediately upon skill invocation.

What It Does

Generates static visual content across 20+ formats — blog headers, technical and architecture diagrams, frameworks, taxonomies, timelines, comparisons, stat cards, comics, icons, wallpapers, D3 charts, Mermaid diagrams — using Flux, Nano Banana Pro (Gemini 3 Pro), and GPT-Image-2. Every request routes through a named workflow that encodes the technique and palette, output stages to $LIFEOS_DOWNLOADS_DIR (default ~/Downloads/ when unset) for review first, and blog headers ship both a transparent inline version and an opaque social thumbnail.

The Problem

The bare image model produces inconsistent, off-style output when handed a freeform prompt — one session shipped 12 rejected diagrams because the prompt skipped the workflow that holds the composition rules. Different formats need different models (text-heavy cards want GPT-Image-2; editorial headers want Nano Banana Pro), different size formats, and different transparency handling. Without a fixed routing-and-staging discipline, you get wrong sizes, opaque headers that bleed over the page background, and images pushed straight to a repo before anyone looked at them. This skill makes the workflow, the model choice, and the Downloads-first review mandatory in code, not just in markdown.

Read the full file on GitHub · 362 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. 1mo ago First seen · 362 lines · 124 tokens per session scan A 8d58e1c1c8f3

Subscribe to this mod's changes

Art is a skill published in the GitHub repository danielmiessler/LifeOS (19,534 stars, last pushed 1mo ago), licensed MIT. It adds 124 tokens to every session and 6,089 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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