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 saajunaid/caddis-plugin --skill popular-web-designsgit clone --depth 1 https://github.com/saajunaid/caddis-pluginWrote 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/saajunaid/caddis-plugin/popular-web-designs)<a href="https://agentmods.dev/skills/saajunaid/caddis-plugin/popular-web-designs"><img src="https://agentmods.dev/badge/skills/saajunaid/caddis-plugin/popular-web-designs/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/saajunaid/caddis-plugin/popular-web-designs"><img src="https://agentmods.dev/badge/skills/saajunaid/caddis-plugin/popular-web-designs.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 | $0.00050 | $0.01829 |
| Opus 5.5 | $0.00020 | $0.00732 |
| Sonnet 5.5 | $0.00010 | $0.00366 |
| Haiku 4.5 | $0.00005 | $0.00183 |
Grade A, and why
popular-web-designs 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 29d 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 — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Popular Web Designs
54 real-world design systems captured as HTML/CSS references. Each entry maps to a company's complete visual language — colors, typography, components, spacing, shadows, and responsive rules.
How to Use
- Identify the target brand from the catalog below or from the user's description
- Load the detailed template by reading
templates/<brand>.mdin this skill directory - Extract design tokens and apply to your HTML
- Use the Agent Prompt Guide in each template for exact CSS values
Font Substitution (Proprietary → Google Fonts CDN)
| Proprietary Font | CDN Substitute |
|---|---|
| sohne-var (Stripe) | Source Sans 3 |
| Geist Sans (Vercel) | Geist (on Google Fonts) |
| Inter Variable (Linear) | Inter |
| Berkeley Mono (Linear code) | JetBrains Mono |
| SF Pro Display (Apple) | Inter |
| Circular (Spotify, Airbnb) | DM Sans |
| Söhne (Notion) | Inter |
Design Selection Guide
Dark UI / dashboards: Linear, Cursor, ElevenLabs, Warp, xAI, Ollama
Marketing / landing pages: Stripe, Framer, Apple, SpaceX
Developer tools: Vercel, Supabase, Raycast, Sentry, PostHog
Content-first / docs: Mintlify, Notion, Sanity, MongoDB
Terminal / minimal: Ollama, xAI, VoltAgent, Resend
Fintech / trust: Stripe, Revolut, Wise, Coinbase
Enterprise / corporate: IBM, Intercom, Zapier, Airtable
Brand Catalog
Full detailed templates (color systems, typography tables, component specs, agent prompts) are in
templates/. Quick reference below.
AI & Machine Learning
| Brand | Aesthetic | Primary Color | Font |
|---|---|---|---|
| Claude | Warm cream, editorial | #D97706 amber |
Georgia + Inter |
| Cohere | Navy + coral | #FF6B6B |
Inter |
| ElevenLabs | Near-black + purple | #7C3AED |
Inter |
| Minimax | Dark + blue | #3B82F6 |
Inter |
| Mistral AI | Dark navy + gradient | #FF7849 orange |
Inter |
| Ollama | Terminal black | #22C55E green |
JetBrains Mono |
| OpenCode AI | Terminal dark | #4ADE80 |
JetBrains Mono |
| Replicate | Pure black minimal | #FFFFFF |
Geist |
| RunwayML | Black + green accent | #00E599 |
Inter |
| Together AI | Dark + blue | #3B82F6 |
Inter |
| VoltAgent | Dark + teal | #14B8A6 |
JetBrains Mono |
| xAI (Grok) | Pure black + white | #FFFFFF |
JetBrains Mono |
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.
- 29d ago Changed · -23 tokens per session d13a11209279
- 1mo ago First seen · 143 lines · 73 tokens per session scan A 6cf7daa42b7a
popular-web-designs is a skill published in the GitHub repository saajunaid/caddis-plugin (0 stars, last pushed yesterday), licensed MIT. It adds 50 tokens to every session and 1,829 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.
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