Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/mishahanin/heading-osnpx agentmods add skills/mishahanin/heading-os/designWrote 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/mishahanin/heading-os/design)<a href="https://agentmods.dev/skills/mishahanin/heading-os/design"><img src="https://agentmods.dev/badge/skills/mishahanin/heading-os/design/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/mishahanin/heading-os/design"><img src="https://agentmods.dev/badge/skills/mishahanin/heading-os/design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, 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 Excessive Agency · line 6 Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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 | $0.00096 | $0.02908 |
| Opus 5 | $0.00048 | $0.01454 |
| Sonnet 5 | $0.00019 | $0.00582 |
| Haiku 4.5 | $0.00010 | $0.00291 |
Grade A, and why
design 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 5d 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 — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design System
Professional design studio with three rendering pipelines: HTML Studio (free, deterministic), Replicate AI (17 models), and Document Production (PPTX, PDF). Routes each task to the optimal pipeline automatically.
Commands
| Command | Pipeline | Description |
|---|---|---|
/design social [brief] |
HTML Studio | Social media graphic (LinkedIn, Twitter) |
/design infographic [brief] |
HTML Studio | Data visualization, infographic |
/design mockup [brief] |
HTML Studio | UI/UX mockup, app screen, dashboard |
/design card [brief] |
HTML Studio | Branded card, quote card, stat card |
/design illustration [brief] |
Replicate AI | Creative illustration, conceptual art |
/design photo [brief] |
Replicate AI | Photorealistic image, product shot |
/design logo [brief] |
Replicate AI (SVG) | Logo, icon, native vector graphic |
/design text-graphic [brief] |
Replicate AI | Graphic with embedded text (poster, banner) |
/design brochure [brief] |
HTML + Replicate | Layout from HTML, illustrations from AI |
/design edit [instruction] |
Replicate AI | Edit existing image via natural language |
/design upscale [path] |
Replicate AI | Upscale image for print quality |
/design remove-bg [path] |
Replicate AI | Remove background from image |
/design draft [brief] |
Replicate AI | Fast concept at $0.003 via FLUX Schnell |
Routing Logic
Pipeline 1: HTML Studio (free, $0)
When: Task is layout-driven, text-driven, or data-driven.
Routes: social, infographic, mockup, card, brochure layouts.
Workflow:
Resolve the data outputs dir before any Bash command. Renders are DATA artifacts and
must land in the DATA overlay, never the engine tree. The data-path-redirect
PreToolUse hook rewrites a bare outputs/... for the Write tool, but it does NOT
cover Bash. So the step-4 Write lands in the overlay. A bare outputs/... in step 5
resolves against the engine root, and writes the render into the public clone.
What ships with it
3 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.
- 5d ago Changed · +26 lines 890e9104ad04
- 8d ago First seen · 228 lines · 96 tokens per session scan A d07154040054
design is a skill published in the GitHub repository mishahanin/heading-os (11 stars, last pushed 2d ago), licensed Apache-2.0. It adds 96 tokens to every session and 2,908 once invoked, about $0.0005 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 2026-08-30.
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shogun-screenshot
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brand-identity
Brand strategy and identity design for businesses and products. Use when creating brand guidelines, developing visual identity systems, or defining brand positioning.
graphic-design
Professional graphic design principles for digital and print media. Use when creating visual designs, choosing color palettes, typography, layouts, or providing design feedback.
nous-branding
Generate images and content consistent with the Nous Research brand identity. Use when creating visuals in the Nous / Theia / Hermes ecosystem: a "cyber-classical" style blending neo-classical statuary, cyberpunk/industrial grunge, and retro anime illustration. Covers official brand color palette, typography…