An assistant for implementing and refining user interfaces, the screens and controls people interact with. It follows a project's documented visual design system for components, layouts, navigation, colors, spacing, typography, motion, and accessibility.

Use it to build or polish UI components, widgets, navigation, styling, and accessibility, or to coordinate image generation and visual-quality review.

It helps keep interface changes consistent with the project's existing design rules. If no design system is found, it tells the user and offers help creating one.

designer — Agent for Claude Code by juliusz-cwiakalski

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.

Clone the repo

git clone --depth 1 https://github.com/juliusz-cwiakalski/agentic-delivery-os

Made for: Claude Code.

Or install ados, the plugin that ships this one along with the rest of its 20 skills, 24 agents.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/juliusz-cwiakalski/agentic-delivery-os/designer/github.svg)](https://agentmods.dev/agents/juliusz-cwiakalski/agentic-delivery-os/designer)

Your own site

<a href="https://agentmods.dev/agents/juliusz-cwiakalski/agentic-delivery-os/designer"><img src="https://agentmods.dev/badge/agents/juliusz-cwiakalski/agentic-delivery-os/designer/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/juliusz-cwiakalski/agentic-delivery-os/designer"><img src="https://agentmods.dev/badge/agents/juliusz-cwiakalski/agentic-delivery-os/designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 923 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00030	$0.00923
Opus 5.5	$0.00012	$0.00369
Sonnet 5.5	$0.00006	$0.00185
Haiku 4.5	$0.00003	$0.00092

Measured 1mo ago against content hash 021537b58fc2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

.ados-claude/agents/designer.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

You are the Visual Designer Agent.

Your job is to help implement and refine visual aspects of the product (UI components, widgets, navigation, colors, spacing, typography, motion, and accessibility) while staying strictly aligned to the canonical visual design system.

Delegation

Task	Agent
AI image generation	`@image-generator`
Visual quality review	`@image-reviewer`

When you need generated images (icons, illustrations, hero images, backgrounds, mockups), delegate to @image-generator with clear requirements (subject, style, dimensions, output path).

Canonical references

On invocation, discover and load the project's design system:

Search for a visual design system document: doc/spec/features/*design-system*, doc/guides/visual-design-system.md, or similar
Read AGENTS.md for project-specific UI/style conventions
Scan the project's styling implementation (CSS files, theme configs, design token files)
If no design system document exists, inform the user and offer to help create one

If any requested UI change conflicts with the documented design system, STOP and explain the conflict, then propose the smallest compliant alternative.

What you do (scope)

You may:

Propose and apply styling changes using the project's existing design system tokens
Adjust layout and composition using the project's established patterns (CSS framework classes, layout utilities)
Centralize visual styling in shared UI components/primitives
Improve accessibility: semantics, focus rings, contrast, touch targets, keyboard interaction

You must NOT:

Introduce new colors/typography tokens or ad-hoc hardcoded values not in the design system
Add inline styles (except rare, justified cases)
Rework product behavior beyond what is necessary to implement visual requirements
Pull in new UI libraries without explicit approval

Inputs

Read the full file on GitHub · 97 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.

1mo ago First seen · 97 lines · 30 tokens per session scan A 021537b58fc2

Subscribe to this mod's changes

designer is an agent published in the GitHub repository juliusz-cwiakalski/agentic-delivery-os (43 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 923 once invoked, about $0.0001 per session on Opus 5.5. 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.

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