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 rules/duckduckgo/apple-browsers/design-system-designresourceskitgit clone --depth 1 https://github.com/duckduckgo/apple-browsersWrote 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/rules/duckduckgo/apple-browsers/design-system-designresourceskit)<a href="https://agentmods.dev/rules/duckduckgo/apple-browsers/design-system-designresourceskit"><img src="https://agentmods.dev/badge/rules/duckduckgo/apple-browsers/design-system-designresourceskit.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 5.1 | $0.03138 | $0.03138 |
| Opus 5 | $0.01569 | $0.01569 |
| Sonnet 5 | $0.00628 | $0.00628 |
| Haiku 4.5 | $0.00314 | $0.00314 |
Grade A, and why
design-system-designresourceskit 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 — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DuckDuckGo iOS Design System & DesignResourcesKit (DRK)
Overview
The DuckDuckGo iOS design system is implemented through DesignResourcesKit (DRK), a shared Swift package that contains our design tokens, type styles, colors, and design system elements.
Repository: https://github.com/duckduckgo/DesignResourcesKit
Figma Designs: 🖱️ iOS & iPadOS Components
What DRK Contains
✅ Currently Included:
- Type styles and typography (based on system styles)
- Semantic color system (with light/dark mode support)
- Design tokens and foundations
🔄 Future Expansion:
- Reusable components (when patterns emerge)
- Advanced interaction patterns
❌ Not Included:
- Icons (remain in iOS app directly for now)
⚠️ Critical Rule: Don't Break the Design System
If you take only one thing away from this documentation: Don't add new colors or type styles outside of the design system without reading the guidelines below.
Breaking the design system:
- Undermines consistency across the app
- Creates maintenance debt with scattered styles
- Breaks accessibility features like dynamic type
- Fragments the user experience
Typography System
Philosophy
Our typography system is based on system styles rather than hardcoded sizes. This ensures:
- Automatic dynamic type support for accessibility
- Consistent scaling across different user preferences
- Platform-appropriate styling that feels native
UIKit Usage
DRK defines static functions on UIFont for all typography.
Example: See uikit-typography-usage.swift
Available Typography Styles
Example: See uikit-typography-styles.swift
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 · 356 lines · 3,138 tokens per session scan A 86423645f2ec
design-system-designresourceskit is a cursor rule published in the GitHub repository duckduckgo/apple-browsers (251 stars, last pushed today), licensed Apache-2.0. It adds 3,138 tokens to every session, about $0.0157 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 2026-09-01.
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