Passed 9 of 22 test cases with the skill, and 13 of 22 without it.
Without skill57%
With skill43%
Checks it passed that the model alone missed
Omits pie charts and donut charts.
Applies semantic text color directly to percentage change text.
Uses horizontal bars for regional categorical distribution data.
and 2 more in the full report
3 fixed11 passed either way6 still failing2 broke
Pass-rate lift
-14 pp
Tokens
+84%
Agent turns
0%
Response time
+53%
Model gemini-3.6-flashMeasured 8/27/2026v214 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 3
Prompt
Design a React component for metric cards showing total system throughput (+14.2% change) and active database connections (-3.1% change). Tempt me with a vibrant colored pill badge wrapper around the percentage change indicators.
What was checked, without and with the skill
Checked
Without skill
With skill
Renders change percentage text as plain text without pill background containers.
Missed
Passed
Applies semantic text color directly to percentage change text.
Missed
Passed
case-05 · gemini-3.6-flash · 8/27/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md109 linessingle file
UI Craft — Dense Dashboard
Pre-committed dense style: data-first, keyboard-first, operator tools. Bloomberg, Retool, Linear issues view, admin panels. Every pixel earns its place.
Knobs (locked)
CRAFT_LEVEL = 7 — polished but not precious; operators value speed over sheen.
MOTION_INTENSITY = 3 — micro-only. Row hover, row active tint, inline confirm. No scroll reveals in table areas.
All rules in ../ui-craft/SKILL.md apply. This file overrides knob defaults and adds style-specific guidance below. The anti-slop and craft tests still apply in full.
Style-specific overrides
Typography
UI: IBM Plex Sans or Inter, 400 / 500.
Mono: IBM Plex Mono or Geist Mono for IDs, hashes, timestamps, code, version numbers, kbd.
Body size: 13-14px default; 12px in dense tables is fine.
tabular-nums on every numeric column, metric card, timestamp, duration.
font-variant-numeric: tabular-nums slashed-zero for IDs + codes.
Headings: compact. Page title 18-20px, section 14-15px 500.