Best performance optimization skills for Claude Code, Codex and other agents.

Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.

shareAI-lab/learn-claude-code

Unified LLM torch-profiler triage skill for sglang, vllm, TensorRT-LLM, and TokenSpeed.

sgl-project/sglang

Connects an agent to a real Chrome instance through the Chrome DevTools MCP server, so it can inspect the DOM, read console errors and profile performance directly.

addyosmani/agent-skills

React and Next.js performance optimization guidelines from Vercel Engineering.

sanity-io/sanity

Comprehensive Python programming reference covering syntax, concurrency, networking, databases, ML/LLM development, and HPC.

crazyguitar/pysheeet

Benchmarks Django ORM filters in Saleor by generating bulk data, extracting the SQL and running EXPLAIN ANALYZE to check index usage.

saleor/saleor

Covers debug logging, the Debug menu, profiling rules and runtime pitfalls for working on the cmux macOS terminal app.

manaflow-ai/cmux

Analyzes V8, Chrome and Electron .heapsnapshot files with Node scripts to find memory leaks, detached DOM nodes and the retainer paths that keep objects alive.

keybase/client

Runs controlled JMH experiments on the Caffeine cache to find shared contention and hot-path waste, then reviews correctness and returns a reviewable patch.

ben-manes/caffeine

Comprehensive guide for AntV L7 geospatial visualization library.

antvis/L7

Guidelines for Ascend NPU kernel / Triton-Ascend backend performance work in the FLA repo.

fla-org/flash-linear-attention

Fix bugs in SkiaSharp C bindings. An agent skill from mono/SkiaSharp.

mono/SkiaSharp

Guides CPU profiling of PlotJuggler 4 on Linux with perf: count first, record cheaply with LBR, then read per-thread, flat, flamegraph or time-window views.

PlotJuggler/PlotJuggler

A skill your agent uses for any task or question involving Livewire.

coollabsio/coolify

Analyzes Chrome or Electron DevTools Performance trace exports with Python scripts to find where render time actually goes, without opening DevTools.

keybase/client

Svelte 5 runes, snippets, SvelteKit patterns, and modern best practices for TypeScript and component development.

SikandarJODD/cnblocks

Scans C# and .NET code for about 50 performance anti-patterns and reports prioritized findings with concrete fixes, at a scan depth you choose.

dotnet/skills

Autonomous performance optimization: research, PoC, benchmark, implement, review, PR

raullenchai/Rapid-MLX

Profiles slow Python code with cProfile and memory profilers, then applies targeted fixes for CPU, memory, I/O and query bottlenecks.

wshobson/agents

Optimize web performance for faster loading and better user experience.

midudev/100cosas.dev

Measures and shrinks the ExecuTorch runtime binary by building a size test, analyzing it with bloaty and landing each reduction as its own pull request.

pytorch/executorch

Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.

kurealnum/dotfiles

Captures a clean Keybase service log and analyzes it for redundant, duplicated or looping RPCs, then checks whether a caching fix reduced the calls.

keybase/client

Interprets pinned managed benchmark evidence for a dotnet/maui pull request and writes a narrative for the performance review workflow, without running or publishing anything.

dotnet/maui

Analyze Google Analytics data, review website performance metrics, identify traffic patterns, and suggest data-driven improvements.

thatrebeccarae/claude-marketing

Condensed debugging method and tool recipes for Unix, Python and PyTorch programs: crashes, hangs, segfaults, wrong output, CUDA OOM, NaN values and slowness.

stas00/the-art-of-debugging

A skill your agent uses for any task or question involving Livewire.

yungifez/skuul

Checklist for reviewing code changes that touch queries, APIs, rendering, caching or algorithms for performance, scalability and resource-usage problems.

ZeroDeng01/sublinkPro

Parses a React DevTools Profiler JSON export with Python scripts to find re-render storms, commit fan-out and why a component rendered, without opening the DevTools UI.

keybase/client

Walks through capturing and comparing V8 heap snapshots to find memory leaks in the Qwen Code Node.js CLI, using tmux and the chrome-devtools CLI.

QwenLM/qwen-code

Runtime-V2 performance-iteration workflow. An agent skill from mirage-project/mirage.

mirage-project/mirage

Sync changes from the hotpath, hotpath-macros and hotpath-drain crates to their meta counterparts (hotpath-meta, hotpath-macros-meta and hotpath-drain-meta).

pawurb/hotpath-rs

Reviews code for security, performance, quality and maintainability, using a checklist, a finding template and two metrics scripts.

luongnv89/claude-howto

Run profile-driven bottleneck optimization across Apache Fory implementations (Java, C++, Python/Cython, Go, Rust, Swift, C, JavaScript/TypeScript, Dart, Kotlin, Scala).

apache/fory

Analyze Samply Firefox-profiler output, record focused profiles, summarize hot threads/stacks, inspect symbolication, and compare profile evidence before and after a performance change.

vortex-data/vortex

Confirms that a change to PlotJuggler 4 really works in the running app by proving the rebuild, launching with real data and measuring the result.

PlotJuggler/PlotJuggler

A skill your agent uses for HarmonyOS NEXT development help and local DevEco automation.

linhay/harmony-next.skills

Comprehensive React and Next.js performance optimization guide with 40+ rules for eliminating waterfalls, optimizing bundles, and improving rendering.

shapeshift/web

Profiles, benchmarks and tunes AI training workloads on Moore Threads MUSA GPUs with a measurement-first process that keeps model behavior unchanged.

open-infra-skills/infra-skills

Investigate a bug a specific diri user hit (crash, hang, slowness, memory leak, blank or garbled terminal, spawn/resume/remote failure, copy/paste not working) from diri's telemetry with the…

cristicretu/diri

Profile AI inference workloads (vLLM, SGLang, TensorRT-LLM, PyTorch, any GPU application) with the Graphsignal profiler and read the results from its local /signals JSON endpoint.

graphsignal/graphsignal

A skill your agent uses when capturing or analyzing an iOS .memgraph, especially when the task mentions a memory leak, heap growth, persistent memory increase, ownership path, or matched-capture…

dpearson2699/swift-ios-skills

Best practices for building UI with Jetpack Compose, focusing on state hoisting, detailed performance optimizations, and theming.

Moustachauve/WLED-Android

CUDA kernel development, debugging, and performance optimization for Claude Code.

technillogue/ptx-isa-markdown

Comprehensive C/C++ programming reference covering everything from C11-C23 and C++11-C++23, system programming, CUDA GPU computing, debugging tools, Rust interop, and advanced topics.

crazyguitar/cppcheatsheet

Guides perf-based profiling of Linux programs through five flows: quick hardware counters, hotspot profiling, cache contention, core-scaling, and a report.

intel/intel-performance-skills

Find and fix why a website is slow by capturing and analyzing a Firefox performance profile, or by analyzing a profile the user already has (a saved file or a profiler.firefox.com share link).

mozilla/firefox-devtools-mcp

Analyzes Torch Profiler traces from SGLang, vLLM and TensorRT-LLM servers into kernel attribution, overlap and fusion tables.

BBuf/AI-Infra-Auto-Driven-SKILLS