Prototype

Moves you through content-first, wireframe, low-fi, high-fi, and code in that order, refusing to let you skip ahead before you've validated what matters at each level. The workflow includes user-journey mapping with error paths and edge cases, plus usability-testing scripts with concrete success criteria. Most prototyping tools let you jump straight to pixel-perfect mockups, but this enforces the discipline of answering "do we need this feature" before "should this button be blue." High-fidelity and code outputs respect the same token and accessibility standards as the design-code skill. Use it when you want structured validation gates instead of building the whole thing and hoping users don't hate it.

skills.sh installs: 528
GitHub stars: 3.1K
last updated: Jun 11, 2026

View on GitHub

Install

$ npx -y skills add plugin87/ux-ui-agent-skills --skill prototype --agent claude-code

Installs into .claude/skills of the current project.

Files

Skill: Prototype & Research

Requirements

This skill needs the full UX/UI Agent Skills kit: the gates, the references and the design-system library. Install it with npx ux-ui-agent-skills@3.1.0 init or as the Claude Code plugin. npx skills@1.7.6 add copies the skill folder and nothing else. Installed that way, this skill runs in guidance-only mode: no gate runs, so it gives no verdict.

Step 0: is the kit here? Check once: ls ${CLAUDE_SKILL_DIR}/../../../tokens >/dev/null 2>&1 && echo KIT_OK || echo KIT_MISSING On KIT_MISSING, open your reply with: "Guidance-only mode: the UX/UI Agent Skills kit is not installed here, so no gate ran and nothing below is measured." Then work from this file and general practice, under three rules. Do not guess or cite the contents of a kit file you could not open. State no measured number (no contrast ratio, no N/N, no "passes WCAG"): write "not verified" where one would go. End with a line Skipped (kit not installed): that names every gate script this file tells you to run, then the install command above.

Guide work through the right fidelity level with validation.

SKILL.md on GitHub