zig-project SKILL.md skillA

zig-project from majiayu000/spellbook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add majiayu000/spellbook/zig-project@git:20260523.d39dd11

Pins git:20260523.d39dd11 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
majiayu000/spellbook
Path
skills/zig-project/SKILL.md
Versions recorded
2
Latest version
git:20260523.d39dd11, committed May 23, 2026
First version recorded
Dec 17, 2025
Size
10,684 bytes
Repository stars
290
License
MIT

Modern Zig project architecture guide. Use when creating Zig projects (systems programming, CLI tools, game dev, high-performance services). Covers explicit allocators, comptime, error handling, and build system.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Zig Project Architecture

## Core Principles

- **No hidden behavior** — No hidden allocations, no hidden control flow, no macros
- **Explicit allocators** — Pass allocator as parameter, never use global allocator
- **Comptime over macros** — Use comptime for generics and metaprogramming
- **Error unions** — Use `!T` for explicit error handling, avoid `anyerror`
- **defer/errdefer** — Resource cleanup at scope exit
- **No backwards compatibility** — Delete, don't deprecate. Change directly
- **LiteLLM for LLM APIs** — Use LiteLLM proxy for all LLM integrations

---

## No Backwards Compatibility

> **Delete unused code. Change directly. No compatibility layers.**

```zig
// ❌ BAD: Deprecated function kept around
/// Deprecated: Use newFunction instead
pub fn oldFunction() void {
    @compileLog("oldFunction is deprecated");
    newFunction();
}

// ❌ BAD: Alias for renamed functions
pub const old_name = new_name; // "for backwards compatibility"

// ❌ BAD: Unused parameters
fn process(_: *const Config, data: []const u8) !void {
    _ = data;
}

// ✅ GOOD: Just delete and update all usages
pub fn newFunction() void {
    // ...
}

// ✅ GOOD: Remove unused parameters entirely
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add majiayu000/spellbook/zig-project@sha256:fd80f42ae73d582a

The line at the top of this page pins the label git:20260523.d39dd11, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4q3titz5jj6vyts3.svg)](https://markdownregistry.com/a/art_4q3titz5jj6vyts3)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Dec 17, 2025 and May 23, 2026, about one every 157 days.

versioncommittedcommitsizeaudit
git:20260523.d39dd11 latest2026-05-23 d39dd11 10,684 BA view · diff
git:20251217.9c109222025-12-17 9c10922 11,150 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10684 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

majiayu000/spellbook · 290 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4q3titz5jj6vyts3
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/zig-project
GET https://markdownregistry.com/api/v1/blob/fd80f42ae73d582a0d83fefcdce1cd3660b358d91dff1ad072cd2919e8dffcde

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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