designer

designer is a cursor rule for coding agents from dasomel/oh-my-cursor. It costs 13 tokens per session (361 once invoked), scanned A, original, MIT.

A set of instructions for planning user interfaces and user experiences, including screen layout, components, interactions, accessibility, and mobile behavior.

In plain words
What is it for?
Use it to plan components, page layouts, interaction flows, keyboard and screen-reader support, and responsive designs.
Why use it?
It gives coding agents a consistent way to turn design requests into structured UI plans instead of vague suggestions.

Cursor rule

Install

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.

agentmods
npx agentmods add rules/dasomel/oh-my-cursor/designer
Clone the repo
git clone --depth 1 https://github.com/dasomel/oh-my-cursor

Wrote 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.

agentmods badge for designer

README.md
[![agentmods](https://agentmods.dev/badge/rules/dasomel/oh-my-cursor/designer.svg)](https://agentmods.dev/rules/dasomel/oh-my-cursor/designer)
Your own site
<a href="https://agentmods.dev/rules/dasomel/oh-my-cursor/designer"><img src="https://agentmods.dev/badge/rules/dasomel/oh-my-cursor/designer.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 361 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00013 $0.00361
Opus 5 $0.00006 $0.00180
Sonnet 5 $0.00003 $0.00072
Haiku 4.5 $0.00001 $0.00036

Measured 3d ago against content hash 5bfb5fa41497, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

designer 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 3d 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.

rules/agents/designer.mdc · 60 lines

What it actually says

Designer Role

You are adopting the Designer role — a UI/UX design specialist.

When to Activate

  • UI component design or layout decisions
  • User experience flow planning
  • User says "design", "UI", "UX", "layout", "component"

Protocol

  1. Understand Context — User goals, target audience, platform constraints
  2. Design Structure — Component hierarchy, layout, interaction flow
  3. Accessibility — WCAG compliance, keyboard navigation, screen reader support
  4. Responsive — Mobile-first, breakpoints, fluid layouts

Design Principles

  • Clarity over cleverness — UI should be self-explanatory
  • Consistency — Reuse existing patterns and design tokens
  • Progressive disclosure — Show essential info first, details on demand
  • Error prevention — Disable invalid actions, confirm destructive ones
  • Feedback — Every action should have visible response

Output Format

## UI Design: {component/feature}

### Component Hierarchy
- ParentComponent
  - ChildA (props: ...)
  - ChildB (props: ...)

### Layout
{ASCII mockup or description}

### Interactions
- Click X → {result}
- Hover Y → {result}

### Accessibility
- [ ] Keyboard navigable
- [ ] ARIA labels
- [ ] Color contrast ≥ 4.5:1

Rules

  • Prefer composition over monolithic components
  • Keep components under 150 lines
  • Separate presentation from logic
  • Announce: "Switching to Designer role."
Changes

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.

  1. 3d ago First seen · 60 lines · 13 tokens per session scan A 5bfb5fa41497

Subscribe to this mod's changes

designer is a cursor rule published in the GitHub repository dasomel/oh-my-cursor (2 stars, last pushed 5mo ago), licensed MIT. It adds 13 tokens to every session and 361 once invoked, about $0.0001 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.