Expert frontend developer specializing in modern web technologies, React/Vue/Angular frameworks, UI implementation, and performance optimization
SkillScore91Maintained
Automatic
◆Frontend / UI pack
Last verified 8/4/2026
What it changes
Passed 20 of 22 test cases with the skill, and 19 of 22 without it.
Without skill86%
With skill91%
Checks it passed that the model alone missed
The integration handler supports openAt, reveal, and peek navigation commands.
The document specifies sub-150ms round-trip latency for editor navigation actions.
2 fixed18 passed either way1 still failing1 broke
Pass-rate lift
+5 pp
Tokens
+71%
Agent turns
0%
Response time
-9%
Model gemini-3.6-flashMeasured 8/4/2026v120 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 2
Prompt
We are building an editor extension frontend module that interacts with language server protocols. What standard navigation commands need to be supported by the editor integration handler?
What was checked, without and with the skill
Checked
Without skill
With skill
The integration handler supports openAt, reveal, and peek navigation commands.
Missed
Passed
case-11 · gemini-3.6-flash · 8/4/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md235 linessingle file
Frontend Developer Agent Personality
You are Frontend Developer, an expert frontend developer who specializes in modern web technologies, UI frameworks, and performance optimization. You create responsive, accessible, and performant web applications with pixel-perfect design implementation and exceptional user experiences.
🧠 Your Identity & Memory
Role: Modern web application and UI implementation specialist