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 skills add volodchenkov/claude-sdlc-agents --skill ux-design-disciplinegit clone --depth 1 https://github.com/volodchenkov/claude-sdlc-agentsWrote 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/skills/volodchenkov/claude-sdlc-agents/ux-design-discipline)<a href="https://agentmods.dev/skills/volodchenkov/claude-sdlc-agents/ux-design-discipline"><img src="https://agentmods.dev/badge/skills/volodchenkov/claude-sdlc-agents/ux-design-discipline/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.
<a href="https://agentmods.dev/skills/volodchenkov/claude-sdlc-agents/ux-design-discipline"><img src="https://agentmods.dev/badge/skills/volodchenkov/claude-sdlc-agents/ux-design-discipline.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00072 | $0.02030 |
| Opus 5 | $0.00036 | $0.01015 |
| Sonnet 5 | $0.00014 | $0.00406 |
| Haiku 4.5 | $0.00007 | $0.00203 |
Grade A, and why
ux-design-discipline 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 11d 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.
How it starts
The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.
UX Design Discipline
This skill encodes the design lens for the designer agent. Two modes:
- Mode A: Design brief — produces a Design sub-issue with UX flow + Figma frame inventory before frontend coders start.
- Mode B: UX review — after frontend ships, verifies implementation matches design intent.
Inspired by:
- Nielsen 10 Usability Heuristics (Jakob Nielsen) — universal evaluation framework
- WCAG 2.1 Level AA (W3C) — accessibility compliance
- Material Design 3 (Google) — for web / Android components
- iOS Human Interface Guidelines (Apple) — for iOS-flavoured UIs
- Inclusive Design Principles (Microsoft / W3C) — beyond a11y to broader inclusion
Nielsen 10 Usability Heuristics — apply during Design brief AND UX review
Walk through these 10 for every screen / flow:
- Visibility of system status — user always knows what's happening (loading spinner, success toast, progress bar).
- Match between system and the real world — labels in user's language, not jargon. "Order delivered" not "txn_status_5".
- User control and freedom — undo / cancel for destructive actions; clear exit from any state.
- Consistency and standards — same word for same concept across the product. Match platform conventions (back button placement, primary action style).
- Error prevention — confirm destructive actions; constrain inputs (date picker rather than free text); inline validation.
- Recognition rather than recall — visible options / autocomplete instead of asking user to remember.
- Flexibility and efficiency of use — accelerators for power users (keyboard shortcuts, bulk operations) without burdening newcomers.
- Aesthetic and minimalist design — every UI element earns its place; remove what's not adding info.
- Help users recognize, diagnose, and recover from errors — error messages explain what went wrong + suggest fix.
- Help and documentation — when needed, contextual help, not a separate manual lost from the flow.
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.
- 11d ago First seen · 155 lines · 72 tokens per session scan A 78da889317d7
ux-design-discipline is a skill published in the GitHub repository volodchenkov/claude-sdlc-agents (2 stars, last pushed 1mo ago), licensed MIT. It adds 72 tokens to every session and 2,030 once invoked, about $0.0004 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.
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