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 agentmods add skills/rileyhilliard/agentrc/designnpx skills add rileyhilliard/agentrc --skill designgit clone --depth 1 https://github.com/rileyhilliard/agentrcWrote 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/rileyhilliard/agentrc/design)<a href="https://agentmods.dev/skills/rileyhilliard/agentrc/design"><img src="https://agentmods.dev/badge/skills/rileyhilliard/agentrc/design.svg" alt="Measured on agentmods" 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 | $0.00036 | $0.01709 |
| Opus 5 | $0.00018 | $0.00855 |
| Sonnet 5 | $0.00007 | $0.00342 |
| Haiku 4.5 | $0.00004 | $0.00171 |
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 4d 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 — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Principles
Core philosophy: Every interface should look designed by a team that obsesses over 1-pixel differences. Not stripped, crafted. And designed for its specific context.
Design Direction (REQUIRED)
Before writing code, commit to a direction. Don't default. Think about what this specific product needs to feel like.
Think About Context
- What does this product do? A finance tool needs different energy than a creative tool.
- Who uses it? Power users want density. Occasional users want guidance.
- What's the emotional job? Trust? Efficiency? Delight? Focus?
- What would make this memorable? Every product has a chance to feel distinctive.
Choose a Personality
| Direction | Feel | When to Use |
|---|---|---|
| Precision & Density | Tight spacing, monochrome, info-forward | Power users who live in the tool. Linear, Raycast, terminal aesthetics. |
| Warmth & Approachability | Generous spacing, soft shadows, friendly | Products that want to feel human. Notion, Coda, collaborative tools. |
| Sophistication & Trust | Cool tones, layered depth, gravitas | Products handling money or sensitive data. Stripe, Mercury. |
| Boldness & Clarity | High contrast, dramatic negative space | Modern, decisive products. Vercel, minimal dashboards. |
| Utility & Function | Muted palette, functional density | Work matters more than chrome. GitHub, developer tools. |
| Data & Analysis | Chart-optimized, technical but accessible | Analytics, metrics, business intelligence. |
Pick one. Or blend two. But commit to a direction that fits the product.
Choose Foundation
Color foundation (don't default to warm):
- Warm (creams, warm grays): approachable, comfortable, human
- Cool (slate, blue-gray): professional, trustworthy, serious
- Pure neutrals (true grays): minimal, bold, technical
- Tinted (slight color cast): distinctive, memorable, branded
Light or dark? Dark feels technical, focused, premium. Light feels open, approachable, clean. Choose based on context.
What ships with it
1 file 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.
- 4d ago First seen · 171 lines · 36 tokens per session scan A 3270b32db0ad
design is a skill published in the GitHub repository rileyhilliard/agentrc (3 stars, last pushed 6mo ago), licensed MIT. It adds 36 tokens to every session and 1,709 once invoked, about $0.0002 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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