Yuzu: Skill for Codex

.codex/skills/yuzu-meson/SKILL.md

yuzu-meson is a skill for Codex from DevNullLtd/Yuzu. It costs 55 tokens per session (473 once invoked), scanned A, original, AGPL-3.0.

A project-specific guide for maintaining Meson build files. Meson is a tool that describes how source files, libraries, and build options are combined into a program.

In plain words
What is it for?
Use it when editing meson.build files, adding or removing source files, changing dependencies, updating cross-compilation files, or changing build behavior.
Why use it?
It helps keep the build graph, source lists, dependencies, platform conditions, and CI build settings in sync when the code changes.

Skill for Codex

Written for Codex: agents/openai.yaml present.

This is DevNullLtd/Yuzu's own configuration. It tells Codex how to work on Yuzu itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Yuzu configures →

Reuse

Borrowing it

Nothing to install: this file belongs to DevNullLtd/Yuzu. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/DevNullLtd/Yuzu/main/.codex/skills/yuzu-meson/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/DevNullLtd/Yuzu

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for yuzu-meson

README.md
[![agentmods](https://agentmods.dev/badge/skills/devnullltd/yuzu/yuzu-meson/github.svg)](https://agentmods.dev/skills/devnullltd/yuzu/yuzu-meson)
Your own site
<a href="https://agentmods.dev/skills/devnullltd/yuzu/yuzu-meson"><img src="https://agentmods.dev/badge/skills/devnullltd/yuzu/yuzu-meson/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for yuzu-meson

Your own site · 80×15
<a href="https://agentmods.dev/skills/devnullltd/yuzu/yuzu-meson"><img src="https://agentmods.dev/badge/skills/devnullltd/yuzu/yuzu-meson.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 473 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00055 $0.00473
Opus 5.5 $0.00022 $0.00189
Sonnet 5.5 $0.00011 $0.00095
Haiku 4.5 $0.00006 $0.00047

Measured 27d ago against content hash 470a191b635a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

yuzu-meson scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 27d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.codex/skills/yuzu-meson/SKILL.md · 42 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 27d ago First seen · 42 lines · 55 tokens per session scan A 470a191b635a

Subscribe to this mod's changes

yuzu-meson is a skill published in the GitHub repository DevNullLtd/Yuzu (19 stars, last pushed today), licensed AGPL-3.0. It adds 55 tokens to every session and 473 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-02.

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