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 cnfeat/top-pm-skills --skill design-engineeringgit clone --depth 1 https://github.com/cnfeat/top-pm-skillsWrote 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/cnfeat/top-pm-skills/design-engineering)<a href="https://agentmods.dev/skills/cnfeat/top-pm-skills/design-engineering"><img src="https://agentmods.dev/badge/skills/cnfeat/top-pm-skills/design-engineering/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/cnfeat/top-pm-skills/design-engineering"><img src="https://agentmods.dev/badge/skills/cnfeat/top-pm-skills/design-engineering.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 | $0.00037 | $0.00515 |
| Opus 5 | $0.00018 | $0.00258 |
| Sonnet 5 | $0.00007 | $0.00103 |
| Haiku 4.5 | $0.00004 | $0.00052 |
Grade A, and why
design-engineering 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 10d 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 — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Engineering
Help the user understand design engineering using frameworks from 2 product leaders who have built design engineering functions at companies like Snap, Captions, and Vercel.
How to Help
When the user asks for help with design engineering:
- Define the role - Clarify what design engineering means in their context (prototyping, production code, or both)
- Identify the need - Determine if the gap is between design and engineering handoffs, prototype fidelity, or shipping speed
- Assess feasibility - Help them evaluate whether to hire specialists or develop existing team members
- Design the function - Guide them on where design engineering should sit organizationally
Core Principles
Merge UX design and engineering
Gaurav Misra: "A big part of what I did there was create this function called design engineering." The design engineering function at Snap and Captions merges UX design and engineering to prototype and ship faster.
Combine design sensibility with shipping ability
Guillermo Rauch: "A lot of the people that we were noticing were being very successful at Vercel were people that had both the design and engineering skills." The most valued design engineers combine high-end design sensibility with the ability to ship production-ready code.
Questions to Help Users
- "What's the current handoff friction between design and engineering?"
- "Do you need prototypes for validation or production-ready code?"
- "Where would design engineering sit in your org - design, engineering, or product?"
- "Do you have existing team members who could grow into this role?"
- "What tools and frameworks would design engineers use?"
Common Mistakes to Flag
- Unclear scope - Not defining whether design engineers prototype or ship production code
- Wrong org placement - Isolating design engineers from both design and engineering teams
- Hiring for unicorns - Looking for people who are world-class at both rather than strong at the intersection
- Ignoring AI tools - Missing how AI-assisted development is making this role more accessible
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.
- 10d ago First seen · 52 lines · 37 tokens per session scan A 8ecd348904b7
design-engineering is a skill published in the GitHub repository cnfeat/top-pm-skills (48 stars, last pushed 2mo ago), licensed MIT. It adds 37 tokens to every session and 515 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 2026-08-30.
Other skills, from other repositories
chakra-ui-builder
Build responsive, accessible UI components and layouts using Chakra UI v3, install or configure Chakra UI in new and existing projects, and design scalable themes using tokens, semantic tokens, recipes, and slot recipes. Use this skill whenever a user asks to build, create, or generate any UI component, page, form…
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
frontend-visual-qa
Audits already-rendered web, landing-page, HTML deck/slide, browser tool/game, dashboard/admin, design-system, and desktop UIs using real-browser or native-app journeys, inspected screenshots, DOM geometry, responsive or projection viewports, and a bundled Playwright sweep. Use after UI implementation to find…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
animation-principles
Apply animation principles — easing, staging, follow-through — to one specific UI motion. Use when tuning how an animation feels. For product-wide duration and easing tokens use motion-system (design-systems); for a full interaction spec use micro-interaction-spec.
refactoring-ui
Audit and fix visual hierarchy, spacing, color, and depth in web UIs. Use when the user mentions "my UI looks off" (or amateur/unprofessional), "fix the design", "Tailwind styling", "color palette", "visual hierarchy", "design system", "spacing scale", or "component styling". Also trigger when building consistent…