rust-macros

rust-macros is a skill for Claude Code, Codex from Lu1sDV/skillsmd. It costs 50 tokens per session (1,661 once invoked), scanned A, original, no licence file.

A guide for writing and debugging Rust macros, which generate or transform code from patterns or annotations. It covers both declarative macros and procedural macros, including their expanded code and diagnostic tests.

In plain words
What is it for?
Use it for macro matching and repetition, name hygiene, crate exports, or derive, attribute, and function-like macros built with Rust macro tools.
Why use it?
Macros can fail in confusing ways because matching, name visibility, and generated code are easy to get wrong; the guide helps check those details.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it for macro matching and repetition, name hygiene, crate exports, or derive, attribute, and function-like macros built with Rust macro tools.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lu1sdv/skillsmd/rust-macros
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Lu1sDV/skillsmd --skill rust-macros
Clone the repo
git clone --depth 1 https://github.com/Lu1sDV/skillsmd

Made for: Claude Code, 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 rust-macros

README.md
[![agentmods](https://agentmods.dev/badge/skills/lu1sdv/skillsmd/rust-macros/github.svg)](https://agentmods.dev/skills/lu1sdv/skillsmd/rust-macros)
Your own site
<a href="https://agentmods.dev/skills/lu1sdv/skillsmd/rust-macros"><img src="https://agentmods.dev/badge/skills/lu1sdv/skillsmd/rust-macros/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 rust-macros

Your own site · 80×15
<a href="https://agentmods.dev/skills/lu1sdv/skillsmd/rust-macros"><img src="https://agentmods.dev/badge/skills/lu1sdv/skillsmd/rust-macros.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,661 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 $0.00050 $0.01661
Opus 5.5 $0.00020 $0.00664
Sonnet 5.5 $0.00010 $0.00332
Haiku 4.5 $0.00005 $0.00166

Measured 5d ago against content hash 77d3ec037b09, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rust-macros 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 5d 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.

rust-macros/SKILL.md · 146 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

5 files 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. 5d ago First seen · 146 lines · 50 tokens per session scan A 77d3ec037b09

Subscribe to this mod's changes

rust-macros is a skill published in the GitHub repository Lu1sDV/skillsmd (2 stars, last pushed 4d ago), with no licence file. It adds 50 tokens to every session and 1,661 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 2026-10-12.