# High performance Zig

> Use when Zig code is latency, memory or layout sensitive and must be measured.

Writes, reviews, and optimizes high-performance Zig code with a measurement-first workflow, cache-aware layout, allocator discipline, comptime specialization, SIMD/scalar paths, and regression checks. Use for `.zig` changes where latency, throughput, memory, startup, binary size, or layout-sensitive code matters.

## Facts

- Type: Agent skill
- Discipline: Engineering
- Author: Lachlan Donald (https://github.com/lox)
- Upstream: https://github.com/lox/agent-skills/blob/main/high-performance-zig/SKILL.md
- Source file: https://raw.githubusercontent.com/lox/agent-skills/main/high-performance-zig/SKILL.md (4828 bytes, sha256:a5e3418b8044c71cd824681c3c2de7c2142f0386270411ed29109447c2b84569)
- Licence: none declared by the repo
- Upstream copy last changed: 2026-09-17
- Status: listed, not yet ruled on by the curator

## Use it

I want to use the High performance Zig skill by Lachlan Donald.
This is what it does, in the author's own words: Writes, reviews, and optimizes high-performance Zig code with a measurement-first workflow, cache-aware layout, allocator discipline, comptime specialization, SIMD/scalar paths, and regression checks. Use for `.zig` changes where latency, throughput, memory, startup, binary size, or layout-sensitive code matters.
Download the whole folder at https://github.com/lox/agent-skills/tree/main/high-performance-zig, SKILL.md and every file beside it, into your skills directory: ~/.claude/skills/high-performance-zig/ for Claude Code, ~/.agents/skills/high-performance-zig/ for Codex, ~/.cursor/skills/high-performance-zig/ for Cursor. Get it from the author's repo, not from startupskills.dev.
Then tell me the path you installed it to and how to invoke it.

Nothing here is vendored: install from the author's repo. This file carries none of the author's file.

## Links

- Page: https://startupskills.dev/lox/high-performance-zig
- Author: https://startupskills.dev/lox
- Index: https://startupskills.dev/llms.txt

## The file

Not reproduced here: the repo does not license republication. Read it on the author's GitHub:
https://github.com/lox/agent-skills/blob/main/high-performance-zig/SKILL.md