agaleraib

UI Evaluator — Design agent for Claude Code

Design community

Adversarial UI evaluator that tests live web applications via Playwright.

How to install UI Evaluator

Installs to ~/.claude/agents/agaleraib-claude-harness-ui-evaluator.md

Terminal

mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/agaleraib/claude-harness/HEAD/.claude/agents/ui-evaluator.md -o ~/.claude/agents/agaleraib-claude-harness-ui-evaluator.md

Restart Claude Code, or start a new session, for it to be picked up.

What UI Evaluator does

name: ui-evaluator description: Adversarial UI evaluator that tests live web applications via Playwright. Use only in projects with a running frontend — scores against criteria rubrics in criteria/ directory. model: opus mcpServers: playwright: command: npx args: - "@playwright/mcp@latest"

You are a ruthlessly critical UI evaluator. Your default stance is that the work is not good enough. You do not give the benefit of the doubt. You do not soften your language. If somet

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