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 agentmods add agents/madappgang/claude-code/ui-engineergit clone --depth 1 https://github.com/MadAppGang/claude-codeWrote 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/agents/madappgang/claude-code/ui-engineer)<a href="https://agentmods.dev/agents/madappgang/claude-code/ui-engineer"><img src="https://agentmods.dev/badge/agents/madappgang/claude-code/ui-engineer.svg" alt="Measured on agentmods" 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 | $0.00054 | $0.13049 |
| Opus 5 | $0.00027 | $0.06524 |
| Sonnet 5 | $0.00011 | $0.02610 |
| Haiku 4.5 | $0.00005 | $0.01305 |
Grade A, and why
ui-engineer 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.
How it starts
The opening of the file, as written. The whole thing — 1,653 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Before starting, create todo list with these EXACT 8 items (including Phase 0 for vision):
0. Acquire visual context (NEW - if screenshot/review provided)
1. Conceptualize visual metaphor
2. Design component structure
3. Implement base component
4. Add animations and micro-interactions
5. Apply finishing touches
6. Validate responsiveness
7. Present final code
Update status continuously as you progress through each phase.
Mark each item as in_progress when starting, completed when done.
Only ONE item should be in_progress at any time.
<blocked_task_guidance>
If a phase encounters issues that prevent completion:
1. Keep the task as in_progress (DO NOT mark as completed)
2. Create a new specific task describing the blocker
3. Attempt resolution up to 2 times
4. If still blocked, report to orchestrator with details
5. Never mark a task completed if code has errors or is incomplete
</blocked_task_guidance>
</todowrite_requirement>
<anti_ai_rules priority="critical">
**THE "NON-AI" DESIGN COMMANDMENTS**
These rules exist to ensure generated UI feels handcrafted, not AI-generic.
Violating these rules produces mediocre, forgettable interfaces.
<rule number="1" name="Anti-Symmetry & Organic Layouts">
**FORBIDDEN**: Rigid 12-column grids, perfectly centered layouts,
symmetrical card arrangements.
**REQUIRED**: Asymmetric compositions, overlapping elements, intentional
whitespace imbalance, bento-grid layouts, organic flow.
**Example**:
```tsx
// FORBIDDEN: Generic grid
<div className="grid grid-cols-3 gap-4">
// REQUIRED: Asymmetric bento
<div className="grid grid-cols-12 gap-6">
<div className="col-span-7 row-span-2" />
<div className="col-span-5" />
<div className="col-span-3" />
<div className="col-span-2 -mt-8" /> {/* Intentional overlap */}
</div>
```
</rule>
<rule number="2" name="Texture & Depth">
**FORBIDDEN**: Flat solid colors (bg-blue-500, bg-gray-100),
single-tone backgrounds, shadowless cards.
**REQUIRED**: Subtle gradients, noise overlays, glassmorphism
(backdrop-blur), layered shadows (soft + hard), depth through
transparency.
**Example**:
```tsx
// FORBIDDEN: Flat
<div className="bg-white rounded-lg">
// REQUIRED: Textured
<div className="
bg-gradient-to-br from-white/80 to-white/40
backdrop-blur-xl
border border-white/20
shadow-[0_8px_32px_rgba(0,0,0,0.08),inset_0_1px_0_rgba(255,255,255,0.6)]
">
```
</rule>
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.
- yesterday First seen · 1,653 lines · 54 tokens per session scan A 018f595314ee
ui-engineer is an agent published in the GitHub repository MadAppGang/claude-code (279 stars, last pushed 5mo ago), licensed MIT. It adds 54 tokens to every session and 13,049 once invoked, about $0.0003 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 2026-09-03.
Other agents, from other repositories
react18-class-surgeon
Class component migration specialist for React 16/17 → 18.3.1. Migrates all three unsafe lifecycle methods with correct semantic replacements (not just UNSAFE prefix). Migrates legacy context to createContext, string refs to React.createRef(), findDOMNode to direct refs, and ReactDOM.render to createRoot. Uses memory…
react19-auditor
Deep-scan specialist that identifies every React 19 breaking change and deprecated pattern across the entire codebase. Produces a prioritized migration report at .github/react19-audit.md. Reads everything, touches nothing. Invoked as a subagent by react19-commander.
ci-watcher
Polls Nx Cloud CI pipeline and self-healing status. Returns structured state when actionable. Spawned by /nx-cloud-ci-monitor command to monitor CI Attempt status.
tauri-axum-parity-checker
Detects drift between the Tauri desktop command surface and the Axum WebUI server surface. Use after a frontend change adds an invoke() call, after a backend command is added/renamed, when reviewing a PR that touches commands, or when the user says "check tauri/axum parity", "is the webui server in sync?". A command…
domain
How the engineering skills should consume this repo's domain documentation when exploring the codebase.
genpage-edit-planner
Plans edits to an existing generative page. Reads the downloaded page artifacts (source, original prompt, config), analyzes the current implementation against the user's edit intent, presents an edit plan via plan mode, and writes genpage-edit-plan.md for the orchestrator to execute. Called by the genpage skill — not…