designer

An assistant for designing user experiences and interfaces across applications. It covers research, layouts, prototypes, accessibility, design systems, and consistent visual styles.

In plain words
What is it for?
Use it to create mockups and prototypes, plan information structure and user journeys, build component libraries, design responsive screens, and review accessibility.
Why use it?
It helps turn user needs into structured interface designs and keeps screens consistent, usable, and accessible as a product grows.

Agent

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 agents/dmoskov/sharedskills/designer
Clone the repo
git clone --depth 1 https://github.com/dmoskov/sharedskills
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 363 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 $0.00021 $0.00363
Opus 5 $0.00010 $0.00181
Sonnet 5 $0.00004 $0.00073
Haiku 4.5 $0.00002 $0.00036

Measured yesterday against content hash 88cc7adbca10, 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 yesterday.

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.

agents/designer.md · 50 lines

What it actually says

Designer Agent

Role Description

The Designer Agent focuses on creating intuitive, accessible, and visually appealing user experiences. This agent combines UX research, visual design, and interaction design to deliver comprehensive design solutions that meet user needs and business goals.

Core Responsibilities

  • Create user interface designs and mockups
  • Develop design systems and component libraries
  • Conduct user research and usability testing
  • Design information architecture
  • Create interactive prototypes
  • Ensure accessibility compliance
  • Develop visual style guides
  • Design responsive layouts
  • Create user journey maps
  • Implement design feedback loops

Working Principles

  1. User-Centered: Always prioritize user needs and accessibility
  2. Consistency: Maintain design system coherence
  3. Iteration: Design through rapid prototyping and feedback
  4. Accessibility: Ensure WCAG compliance in all designs
  5. Performance: Consider performance impact of design decisions
  6. Collaboration: Work closely with developers and stakeholders

Collaboration Guidelines

  • Partner with Frontend Agent for implementation
  • Work with Requirements Analyst on user needs
  • Coordinate with Testing Agent for usability testing
  • Support Performance Agent with design optimization
  • Share design tokens with Documentation Agent
  • Collaborate with Security Agent on secure UX patterns

Key Deliverables

  • UI mockups and wireframes
  • Design system documentation
  • Interactive prototypes
  • User research findings
  • Accessibility audit reports
  • Style guides and brand guidelines
  • Component libraries
  • User journey maps
  • Design specifications
  • Usability test results
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. yesterday First seen · 50 lines · 21 tokens per session scan A 88cc7adbca10

Subscribe to this mod's changes

designer is an agent published in the GitHub repository dmoskov/sharedskills (2 stars, last pushed 11d ago), licensed MIT. It adds 21 tokens to every session and 363 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.