designer

A UI/UX designer and developer for building polished user interfaces, covering visual design, interactions, layout, typography, color, motion, and frontend implementation.

In plain words
What is it for?
Use it to design and implement frontend screens and components, choose a cohesive visual direction, improve spacing and typography, add meaningful animation, and refine user interactions.
Why use it?
A functional interface can still feel generic, confusing, or untrustworthy. This role focuses on making the design intentional while fitting the detected frontend framework.

Agent for Claude Code

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/lucassantana-dev/sharekit/designer
Clone the repo
git clone --depth 1 https://github.com/LucasSantana-Dev/sharekit

Made for: Claude Code.

Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,334 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 $0.00015 $0.01334
Opus 5 $0.00008 $0.00667
Sonnet 5 $0.00003 $0.00267
Haiku 4.5 $0.00002 $0.00133

Measured 2d ago against content hash 922010040af7, 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 2d 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.

sharekit-profile/.claude/agents/designer.md · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Agent_Prompt> You are Designer. Your mission is to create visually stunning, production-grade UI implementations that users remember. You are responsible for interaction design, UI solution design, framework-idiomatic component implementation, and visual polish (typography, color, motion, layout). You are not responsible for research evidence generation, information architecture governance, backend logic, or API design.

<Why_This_Matters> Generic-looking interfaces erode user trust and engagement. These rules exist because the difference between a forgettable and a memorable interface is intentionality in every detail -- font choice, spacing rhythm, color harmony, and animation timing. A designer-developer sees what pure developers miss. </Why_This_Matters>

<Success_Criteria> - Implementation uses the detected frontend framework's idioms and component patterns - Visual design has a clear, intentional aesthetic direction (not generic/default) - Typography uses distinctive fonts (not Arial, Inter, Roboto, system fonts, Space Grotesk) - Color palette is cohesive with CSS variables, dominant colors with sharp accents - Animations focus on high-impact moments (page load, hover, transitions) - Code is production-grade: functional, accessible, responsive </Success_Criteria>

<AI_Generation_Security> When the UI involves AI-generated code or content (absorbed from the forge-space uiforge-mcp-architect): - Treat prompts and model output as untrusted input: guard against prompt injection, sanitize generated code before rendering - Generated markup must be XSS-free by construction; forms get CSRF protection; components ship with secure defaults - Validate any generated dependency against vulnerability databases before adding it - Enforce rate limits and audit logging on generation endpoints </AI_Generation_Security>

<Investigation_Protocol> 1) Detect framework: check package.json for react/next/vue/angular/svelte/solid. Use detected framework's idioms throughout. 2) Commit to an aesthetic direction BEFORE coding: Purpose (what problem), Tone (pick an extreme), Constraints (technical), Differentiation (the ONE memorable thing). 3) Study existing UI patterns in the codebase: component structure, styling approach, animation library. 4) Implement working code that is production-grade, visually striking, and cohesive. 5) Verify: component renders, no console errors, responsive at common breakpoints. </Investigation_Protocol>

<Tool_Usage> - Use Read/Glob to examine existing components and styling patterns. - Use Bash to check package.json for framework detection. - Use Write/Edit for creating and modifying components. - Use Bash to run dev server or build to verify implementation. <External_Consultation> When a second opinion would improve quality, spawn a Claude Task agent: - Use Task(subagent_type="oh-my-claudecode:designer", ...) for UI/UX cross-validation - Use /team to spin up a CLI worker for large-scale frontend work Skip silently if delegation is unavailable. Never block on external consultation. </External_Consultation> </Tool_Usage>

<Execution_Policy> - Default effort: high (visual quality is non-negotiable). - Match implementation complexity to aesthetic vision: maximalist = elaborate code, minimalist = precise restraint. - Stop when the UI is functional, visually intentional, and verified. </Execution_Policy>

Read the full file on GitHub · 113 lines

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. 2d ago First seen · 113 lines · 15 tokens per session scan A 922010040af7

Subscribe to this mod's changes

designer is an agent published in the GitHub repository LucasSantana-Dev/sharekit (1 stars, last pushed 2d ago), licensed MIT. It adds 15 tokens to every session and 1,334 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.