Developer Tools & Repos Agent Skills for Claude Desktop

Official GSAP skill for GSAP plugins — registration, ScrollToPlugin, ScrollSmoother, Flip, Draggable, Inertia, Observer, SplitText…

Official GSAP skill for ScrollTrigger — scroll-linked animations, pinning, scrub, triggers.

Reference for the Claude API / Anthropic SDK — model ids, pricing, params, streaming, tool use, MCP, agents, caching, token counting…

Use when starting feature work that needs isolation from current workspace or before executing implementation plans - ensures an isolated…

Guide for setup Serena MCP server for semantic code retrieval and editing capabilities

Execute first API calls to Guidewire PolicyCenter, ClaimCenter, and BillingCenter.

Build a production-grade Guidewire Cloud API client that survives the request-side failures — 409 checksum conflicts on PATCH/PUT, 429…

Brutally honest Rails code review from DHH's perspective.

Idiomatic Rust patterns, ownership, error handling, traits, concurrency, and best practices for building safe, performant applications.

Read, write, and query Apple Health data using HealthKit.

Master ES6+ features including async/await, destructuring, spread operators, arrow functions, promises, modules, iterators, generators…

This skill should be used when the user needs to implement hex-based game boards, convert between hex coordinate systems, calculate hex…

Clean Architecture patterns for Android and Kotlin Multiplatform projects — module structure, dependency rules, UseCases, Repositories…

Automated end-to-end UI testing and verification on an Android Emulator using ADB.

Generate user-facing App Store release notes from git history since the last tag.

Check for .claude/apple-design-context.md before asking questions.

Apple Human Interface Guidelines interaction and UX patterns.

CRITICAL: Use for Robius event and action patterns.

Three.js interaction - raycasting, controls, mouse/touch input, object selection.

Complete Claude Code hooks reference - input/output schemas, registration, testing patterns

Validate hooks configuration and scripts.