Performance

rust-engineer

by sammcj

Acquire expert Rust developer specialisation in rust systems programming, memory safety, and zero-cost abstractions. Masters ownership patterns, async programming, and performance optimisation for mission-critical applications.

playwright-cli

by VoltAgent

Automates browser interactions for web testing, form filling, screenshots, and data extraction. Use when the user needs to navigate websites, interact with web pages, fill forms, take screenshots, test web applications, or extract information from web pages.

debugging-strategies

by HermeticOrmus

Master systematic debugging techniques, profiling tools, and root cause analysis to efficiently track down bugs across any codebase or technology stack. Use when investigating bugs, performance issues, or unexpected behavior.

nft-standards

by HermeticOrmus

Implement NFT standards (ERC-721, ERC-1155) with proper metadata handling, minting strategies, and marketplace integration. Use when creating NFT contracts, building NFT marketplaces, or implementing digital asset systems.

ml-engineering

by stas00

Field-tested methodology and concrete recipes for training and operating large-scale LLM/VLM/multi-modal models end to end - choosing and benchmarking accelerators, storage and network; SLURM/Kubernetes orchestration; maximizing training throughput and fitting models in memory; diagnosing and surviving training instabilities, NaN/Inf, and hardware/job failures; checkpointing and fault tolerance; inference performance and memory; debugging multi-node/ multi-GPU hangs; and writing/running tests. Use when the user is training or fine-tuning large models, hits low TFLOPS/MFU, OOM, slow dataloading, a loss spike/divergence, a NCCL/InfiniBand or multi-node hang, node/GPU failures, checkpoint or preemption problems, storage/network bottlenecks, or needs to pick GPUs/cloud/file-systems or size inference latency/throughput. Distilled from "Machine Learning Engineering", the latest version of which can be found at https://github.com/stas00/ml-engineering The latest SKILL.md version can be found at https://github.com/stas00/ml-engineering/blob/master/skills/ml-engineering/SKILL.md

firefox-extensions

by youlianvr

Verified Firefox extension bundle for speed boost and eye protection: YourCodecs (force YouTube to serve H.264 when GPU can't handle VP9/AV1), uBlock Origin (ads/trackers), Dark Background and Light Text (dark mode), RedDarkMode theme. Use when the user asks about Firefox extensions for speed/video codecs/dark mode, YouTube stutters despite hardware decoding, or to add/review this bundle. GOTCHA: install only via the AMO button — sideload and policies do NOT work.

ctf-pwn

by cyberkaida

Solve CTF binary exploitation challenges by discovering and exploiting memory corruption vulnerabilities to read flags. Use for buffer overflows, format strings, heap exploits, ROP challenges, or any pwn/exploitation task.

binary-triage

by cyberkaida

Performs initial binary triage by surveying memory layout, strings, imports/exports, and functions to quickly understand what a binary does and identify suspicious behavior. Use when first examining a binary, when user asks to triage/survey/analyze a program, or wants an overview before deeper reverse engineering.

telnyx-messaging-profiles-java

by team-telnyx

Create and manage messaging profiles with number pools, sticky sender, and geomatch features. Configure short codes for high-volume messaging. This skill provides Java SDK examples.

learn-rule

by rohitg00

Capture a correction or lesson as a persistent learning rule with category, mistake, and correction. Use after mistakes or when the user says "remember this".

1k-performance

by OneKeyHQ

Performance optimization for React/React Native — re-renders, memoization, FlashList, memory leaks, and bundle size.

react-native-best-practices

by OneKeyHQ

Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.

phx:learn

by oliver-kriska

Capture lessons learned after fixing a bug or receiving a correction. Updates knowledge base to prevent future mistakes.

local-search-ads

by garrettjsmith

When the user wants to run ads that appear inside the Google Maps local pack / map pack results. Also use when the user mentions "local search ads," "map pack ads," "ads in the map results," "local pack ads," "Google Maps ads," "location extensions ads," or "promoted pins on Google Maps." For LSAs (pay-per-lead), see lsa-ads. For standard geographic PPC, see local-ppc-ads.

lv:assigns

by oliver-kriska

Audit LiveView socket assigns for memory issues and clarity. Use when reviewing LiveView performance or debugging memory problems.

vercel-react-best-practices

by event-catalog

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.

swift-concurrency

by AvdLee

'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).'

Ad Copywriting

by omer-metin

Agent Memory Systems

by omer-metin

analytics-expert

by shipshitdev

This skill should be used when users need help analyzing content analytics data, creating reports, identifying trends, calculating ROI, or providing content optimization recommendations. It activates when users ask analytics questions, request reports, need performance analysis, ROI calculations, trend identification, or content optimization recommendations.

cto-advisor

by shipshitdev

Technical leadership guidance for engineering teams, architecture decisions, and technology strategy. Includes tech debt analyzer, team scaling calculator, engineering metrics frameworks, technology evaluation tools, and ADR templates. Use when assessing technical debt, scaling engineering teams, evaluating technologies, making architecture decisions, establishing engineering metrics, or when user mentions CTO, tech debt, technical debt, team scaling, architecture decisions, technology evaluation, engineering metrics, DORA metrics, or technology strategy.

linkedin-success-factors

by sachacoldiq

7 key LinkedIn success factors and campaign takeaways. Use as a checklist before launching LinkedIn campaigns or reviewing campaign performance.

perf-optimizer

by OneKeyHQ

"Systematic performance optimization and regression debugging for OneKey mobile app (iOS). Use when: (1) Fixing performance regressions - when metrics like tokensStartMs, tokensSpanMs, or functionCallCount have regressed and need to be brought back to normal levels, (2) Improving baseline performance - when there's a need to optimize cold start time or reduce function call overhead, (3) User requests performance optimization/improvement/debugging for the app's startup or home screen refresh flow."

react-best-practices

by OneKeyHQ

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.