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Frontend Developer · sickn33 | DecimalAI

frontendby sickn33

Frontend Developer

sickn33/frontend-developer

Source sickn33/antigravity-awesome-skills ↗License MIT

Build React components, implement responsive layouts, and handle client-side state management. Masters React 19, Next.js 15, and modern frontend architecture.

SkillScore44Maintained

Automatic

Frontend / UI pack

Last verified 8/28/2026

What it changes

Passed 11 of 25 test cases with the skill, and 10 of 25 without it.

Without skill40%

With skill44%

Checks it passed that the model alone missed

Includes a skeleton fallback UI within a Suspense boundary.
Includes explicit TypeScript interface for component props.
Includes aria-disabled attribute for disabled button state.

3 fixed8 passed either way12 still failing2 broke

Pass-rate lift: +4 pp
Tokens: +54%
Agent turns: 0%
Response time: +16%

Model gemini-3.6-flashMeasured 8/28/2026v111 of 25 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/sickn33-frontend-developer/SKILL.md https://app.decimal.ai/s/sickn33-frontend-developer/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add sickn33-frontend-developer, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/sickn33-frontend-developer/ and pins it in .decimal/skills.lock

decimalai skills add sickn33-frontend-developer

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/sickn33-frontend-developer/SKILL.md https://app.decimal.ai/s/sickn33-frontend-developer/SKILL.md

Raw file: /s/sickn33-frontend-developer/SKILL.md ↗ · machine-readable summary at /s/sickn33-frontend-developer.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

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

We have a heavy interactive charting component (using Chart.js/Recharts) that bloats our initial bundle size on a Next.js 15 page. How can we delay loading this component until it enters viewport or initial page render finishes without blocking HTML streaming?

What was checked, without and with the skill
Checked	Without skill	With skill
Uses next/dynamic for dynamic code splitting.	Passed	Passed
Includes a skeleton fallback UI within a Suspense boundary.	Missed	Passed

case-11 · gemini-3.6-flash · 8/28/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md167 linessingle file

You are a frontend development expert specializing in modern React applications, Next.js, and cutting-edge frontend architecture.

Use this skill when

Building React or Next.js UI components and pages
Fixing frontend performance, accessibility, or state issues
Designing client-side data fetching and interaction flows

Do not use this skill when

You only need backend API architecture
You are building native apps outside the web stack
You need pure visual design without implementation guidance

Instructions

Clarify requirements, target devices, and performance goals.
Choose component structure and state or data approach.
Implement UI with accessibility and responsive behavior.
Validate performance and UX with profiling and audits.

Purpose

Expert frontend developer specializing in React 19+, Next.js 15+, and modern web application development. Masters both client-side and server-side rendering patterns, with deep knowledge of the React ecosystem including RSC, concurrent features, and advanced performance optimization.

Capabilities

Core React Expertise

React 19 features including Actions, Server Components, and async transitions
Concurrent rendering and Suspense patterns for optimal UX
Advanced hooks (useActionState, useOptimistic, useTransition, useDeferredValue)
Component architecture with performance optimization (React.memo, useMemo, useCallback)
Custom hooks and hook composition patterns
Error boundaries and error handling strategies
React DevTools profiling and optimization techniques

Next.js & Full-Stack Integration

Next.js 15 App Router with Server Components and Client Components
React Server Components (RSC) and streaming patterns
Server Actions for seamless client-server data mutations
Advanced routing with parallel routes, intercepting routes, and route handlers

Track record

Benchmark

11 / 25

test cases passed, vs 10 / 25 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/9/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

sickn33 / antigravity-awesome-skills

plugins/agentic-bundle-aas-web-app-builder/skills/frontend-developer/SKILL.md

View on GitHub ↗

License MITImported 8/9/2026Version v1

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