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.
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.
npx skills add danielmiessler/LifeOS --skill artgit clone --depth 1 https://github.com/danielmiessler/LifeOSWrote 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.
[](https://agentmods.dev/skills/danielmiessler/lifeos/art)<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.
<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>- Snyk pass
- NVIDIA SkillSpector warn
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.
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.
| Model | Per session | Once 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 |
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.
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 \ 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 locationCharacterSpecs.md- Character design specificationsSceneConstruction.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.
-
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 & -
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.
What ships with it
37 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.
- Lib/discord-bot.ts 7.1 KB runs code
- Lib/midjourney-client.ts 8.7 KB runs code
- Tools/.gitignore 388 B
- Tools/bun.lock 19 KB
- Tools/CLAUDE.md 2.6 KB
- Tools/ComposeThumbnail.ts 18 KB runs code
- Tools/FillFrame.ts 8.2 KB runs code
- Tools/Generate.ts 42 KB runs code
- Tools/GenerateMidjourneyImage.ts 12 KB runs code
- Tools/GeneratePrompt.ts 16 KB runs code
- Tools/package.json 256 B
- Tools/PickExpression.ts 4.3 KB runs code
- Tools/README.md 212 B
- Tools/ThumbnailText.ts 23 KB runs code
- Tools/tsconfig.json 759 B
- Workflows/AdHocYouTubeThumbnail.md 13 KB
- Workflows/AnnotatedScreenshots.md 11 KB
- Workflows/Aphorisms.md 10 KB
- Workflows/Comics.md 14 KB
- Workflows/Comparisons.md 12 KB
- Workflows/CreateLifeosPackIcon.md 6.3 KB
- Workflows/D3Dashboards.md 9.3 KB
- Workflows/EmbossedLogoWallpaper.md 8.8 KB
- Workflows/Essay.md 63 KB
- Workflows/Frameworks.md 11 KB
- Workflows/LogoWallpaper.md 9.9 KB
- Workflows/Maps.md 14 KB
- Workflows/Mermaid.md 30 KB
- Workflows/RecipeCards.md 11 KB
- Workflows/RemoveBackground.md 4.1 KB
- Workflows/Stats.md 11 KB
- Workflows/StyleMatchedThumbnail.md 16 KB
- Workflows/Taxonomies.md 11 KB
- Workflows/TechnicalDiagrams.md 11 KB
- Workflows/Timelines.md 11 KB
- Workflows/Visualize.md 29 KB
- Workflows/YouTubeThumbnailChecklist.md 13 KB
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.
- 1mo ago First seen · 362 lines · 124 tokens per session scan A 8d58e1c1c8f3
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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