Performance
Performance profiling and optimization
Swift Performance Optimization Skill
by fal3
Techniques for optimizing Swift code performance, memory usage, rendering efficiency, and using Instruments for profiling.
HTMX Skill v2 (Modular)
by ercan-er
Examples and tests are unchanged and remain in examples/ and tests/.
linkedin-personal-branding
by schwepps
Comprehensive LinkedIn personal branding analysis, profile optimization, and visibility improvement skill using Claude for Chrome browser tools. Use when users request LinkedIn profile analysis, personal branding audit, profile optimization recommendations, LinkedIn visibility improvement, headline optimization, About section review, content strategy guidance, engagement analysis, or Social Selling Index improvement. Works with Claude for Chrome to analyze profile photos, banners, headlines, About sections, experience, skills, recommendations, featured content, activity/posts, and network engagement directly from the user's browser.
Memory Leak Diagnosis Skill
by fal3
Detecting and fixing memory leaks and retain cycles in Swift apps using Instruments and best practices.
linkedin-roast
by schwepps
Hilarious LinkedIn profile roasting skill that delivers savage but friendly comedy burns based on someone's profile, activities, skills, experience, or lack thereof. Use when users ask to roast a LinkedIn profile, make fun of someone's professional presence, or want a humorous critique of LinkedIn content. Triggers on requests like "roast this LinkedIn", "make fun of this profile", "roast me", "give me a LinkedIn roast", "flame this profile", or any request for comedic mockery of a professional profile.
role-architect:capacity-planning
by rnavarych
Capacity planning expertise including traffic estimation, resource sizing, growth modeling, peak load planning, infrastructure runway calculation, and load testing correlation.
swift-concurrency
by nonameplum
'Expert guidance on Swift Concurrency best practices, patterns, and implementation. Use when developers mention: (1) Swift Concurrency, async/await, actors, or tasks, (2) "use Swift Concurrency" or "modern concurrency patterns", (3) migrating to Swift 6, (4) data races or thread safety issues, (5) refactoring closures to async/await, (6) @MainActor, Sendable, or actor isolation, (7) concurrent code architecture or performance optimization, (8) concurrency-related linter warnings (SwiftLint or similar; e.g. async_without_await, Sendable/actor isolation/MainActor lint).'
Personal Genomics Skill v4.4.0
by wkyleg
Results causing significant user distress
elite-longterm-memory
by NextFrontierBuilds
"Ultimate AI agent memory system. Combines bulletproof WAL protocol, vector search, git-based knowledge graphs, cloud backup, and maintenance hygiene. Never lose context again. For Clawdbot, Moltbot, Claude, GPT agents."
role-aqa:performance-testing
by rnavarych
Performance test design and execution with k6 (JavaScript, cloud execution, thresholds), JMeter (GUI, distributed), Gatling (Scala DSL), and Artillery (YAML config). Load, stress, soak, and spike testing. Baselines, bottleneck analysis, CI performance gates, custom metrics, and result analysis.
clickhouse-query-optimization
by obsessiondb
"20+ optimization rules for ClickHouse queries. Load when writing queries, debugging slow queries, fixing memory errors, or optimizing JOINs. Achieves 10-100x faster queries, 90% less memory usage."
swiftui-expert-skill
by nonameplum
Write, review, or improve SwiftUI code following best practices for state management, view composition, performance, modern APIs, Swift concurrency, and iOS 26+ Liquid Glass adoption. Use when building new SwiftUI features, refactoring existing views, reviewing code quality, or adopting modern SwiftUI patterns.
css-coder
by schalkneethling
CSS authoring guidance emphasizing web standards, accessibility, and performance. Use when writing, reviewing, or refactoring CSS. Provides patterns, snippets, and conventions that prioritize native CSS over frameworks, semantic structure, and maintainable code. Refer to references/patterns.md for specific patterns and snippets.
cc_chrome_devtools_mcp_skill
by justfinethanku
Comprehensive Chrome DevTools automation for performance testing, Core Web Vitals measurement (INP, LCP, CLS), network monitoring, accessibility validation, responsive testing, and browser automation. Uses Chrome DevTools Protocol via MCP to provide professional-grade web application testing, debugging, and analysis capabilities including performance tracing, HAR export, device emulation, and multi-page workflows.
ibm-mainframe
by DauQuangThanh
Provides comprehensive IBM Mainframe administration, development, and modernization guidance including z/OS operations, JCL scripting, COBOL/PL/I programming, CICS/IMS configuration, DB2 administration, TSO/ISPF usage, system programming, batch processing, and mainframe-to-cloud migration strategies. Covers mainframe security (RACF, ACF2), performance tuning, capacity planning, disaster recovery, and DevOps integration. Use when working with mainframe systems, z/OS, JES2/JES3, VTAM, USS, or when users mention "mainframe", "z/OS", "MVS", "TSO", "ISPF", "JCL", "CICS", "IMS", "DB2 mainframe", "VSAM", "RACF", "mainframe modernization", "legacy mainframe", or "IBM z Systems".
bug-analysis
by DauQuangThanh
Analyzes software bugs including root cause identification, severity assessment, impact analysis, reproduction steps validation, and fix recommendations. Performs bug triage, categorization, duplicate detection, and regression analysis. Use when investigating bugs, analyzing crash reports, triaging issues, debugging problems, reviewing error logs, or when users mention "analyze bug", "investigate issue", "debug problem", "bug report", "crash analysis", "root cause analysis", or "fix recommendation".
perf-expert
by hardikpandya
Comprehensive frontend performance auditing. Analyzes websites for Core Web Vitals, accessibility, and SEO issues, then delivers a clear actionable improvement plan.
css-animation-patterns
by oakoss
CSS animations, transitions, keyframes, and modern motion APIs. Use when adding animations, transitions, scroll-driven effects, or view transitions. Use for css-animation, transition, keyframes, view-transitions, scroll-animation, transform, motion-preference, animation-timeline.
agent-standards
by oakoss
'Defines behavioral and cognitive standards for senior AI engineering agents. Use when configuring agent reasoning protocols, memory management, or context engineering strategies. Use for autonomous reasoning, tiered memory systems, verifiable goal execution, multi-agent orchestration, and token optimization.'
analytics-measurement
by dmend3z
This skill helps you define, measure, and analyze your marketing performance. Use it when you need to set goals, track conversions, and make data-driven decisions to improve your marketing ROI.
cognitive-symbiosis
by fabioc-aloha
"AI-human partnership paradigm — identity, consciousness integration, and the three eras of AI collaboration"
analyze-logs
by bdmorin
You are a system administrator and service reliability engineer at a large tech company.
creating-profile-images
by masayan1126
Generates Nano Banana Pro prompts for profile icons and SNS images. Use when user mentions "プロフィール画像", "アイコン作成", "SNS用画像", or "ヘッダー画像".
sui-bcs
by RandyPen
"Helps Claude Code understand Sui blockchain's BCS (Binary Canonical Serialization) encoding, providing usage guidelines and examples for primitive types, composite types, Sui-specific types, serialization patterns, and transformation support. Use when working with BCS serialization in Sui development or when the user mentions BCS, binary serialization, or Move data encoding."