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 Gekkos-tech/agency-os --skill style-systemsgit clone --depth 1 https://github.com/Gekkos-tech/agency-osWrote 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/gekkos-tech/agency-os/style-systems)<a href="https://agentmods.dev/skills/gekkos-tech/agency-os/style-systems"><img src="https://agentmods.dev/badge/skills/gekkos-tech/agency-os/style-systems/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/gekkos-tech/agency-os/style-systems"><img src="https://agentmods.dev/badge/skills/gekkos-tech/agency-os/style-systems.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00180 | $0.01350 |
| Opus 5 | $0.00090 | $0.00675 |
| Sonnet 5 | $0.00036 | $0.00270 |
| Haiku 4.5 | $0.00018 | $0.00135 |
Grade A, and why
style-systems 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 11d 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.
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.
How it starts
The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Style Systems
One project, one style system. This skill selects a single named visual system and enforces it in every token, component, and animation. Consistency beats novelty: a mediocre system applied perfectly looks better than a great system applied at 80%.
Step 1: Pick the system from the brief
Read the brief (or existing product) and match it against these signals. Pick exactly one. If two systems seem plausible, pick the one matching the AUDIENCE, not the one that looks most impressive.
| Signal in brief | System |
|---|---|
| Editorial, portfolio, studio, publication, luxury, calm, "less is more", content-first, photography-led | minimalist-editorial |
| Dev tools, data-heavy, hacker, engineering culture, "raw", terminal, technical documentation, anti-corporate | brutalist-industrial |
| Consumer app, wellness, kids/family, finance-for-humans, "friendly", "approachable", onboarding-heavy, mobile-first | soft-depth |
| SaaS dashboard, B2B product, admin panel, settings-heavy app, "clean and professional", startup landing + app combo | product-modern |
Tie-breakers:
- Dense data UI + technical audience → brutalist-industrial. Dense data UI + business audience → product-modern.
- Marketing site for a soft consumer brand → soft-depth. Marketing site for a serious brand → minimalist-editorial.
- If the user names a system or vibe explicitly, honor it even if signals disagree.
State the chosen system in one sentence before writing any code, e.g. "Committing to product-modern: neutral surfaces, single blue accent, 8pt grid."
Step 2: Load the spec
Read the full reference file for the chosen system BEFORE writing CSS. Do not work from the one-line summaries above.
| System | Spec |
|---|---|
| minimalist-editorial | references/minimalist-editorial.md |
| brutalist-industrial | references/brutalist-industrial.md |
| soft-depth | references/soft-depth.md |
| product-modern | references/product-modern.md |
What ships with it
4 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.
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.
- 11d ago First seen · 86 lines · 180 tokens per session scan A 931c8698bbf2
style-systems is a skill published in the GitHub repository Gekkos-tech/agency-os (5 stars, last pushed 2mo ago), licensed MIT. It adds 180 tokens to every session and 1,350 once invoked, about $0.0009 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.
Other skills, from other repositories
diagram-design
Create branded architecture, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar chart (polar/radial lollipop), loop/flywheel, nested, tree, org chart, layer stack, Venn, pyramid/funnel, treemap, bar, line, Gantt and scatter charts, high-level…
design-mobile-apps
Use when the user wants to design a mobile app or UI screens, when they mention their Sleek (sleek.design) projects, or when implementing Sleek designs in code (HTML, React Native, SwiftUI).
dengguang-zhaoming-bikeng-zhinan
A Chinese-language knowledge guide about home lighting, including ceiling lights, light strips, color temperature, color rendering, and room zoning.
appllama-app-design-skill
Build native-feeling, benchmark-quality mobile app screens (Expo / React Native). Use when designing or implementing any mobile UI — screens, flows, onboarding, paywalls, tab bars, sheets, settings, empty states — or when polishing motion, navigation, typography, dark mode, or perceived performance. Enforces Apple HIG…
archify
Create polished, validated architecture, workflow, sequence, data-flow, and lifecycle/state diagrams as explorable standalone HTML with inline SVG, dark/light themes, optional trace motion, and PNG/JPEG/WebP/SVG/WebM export. Accept plain-language requirements or pasted Mermaid flowchart, sequenceDiagram, and…
interface-review
Reviews your work across multiple categories like UI, typography, layout, color, writing and accessibility and gives you a detailed analysis of the findings.