azure-sdk-for-rust: Skill for Claude Code

.github/skills/check-spelling/SKILL.md

check-spelling is a skill for Claude Code, Codex from Azure/azure-sdk-for-rust. It costs 16 tokens per session (474 once invoked), scanned A, original, MIT.

A project-specific spelling checker that uses cSpell, a tool that finds words it does not recognise in source files. It also describes how to add valid technical terms to the project dictionary.

In plain words
What is it for?
Use it to check changed source files, review misspellings, replace confirmed errors, or record legitimate project terms as accepted words.
Why use it?
It catches spelling mistakes while respecting the repository’s shared and folder-specific word lists.

Skill for Claude CodeCodex ✓ vendor

Written for no agent in particular: nothing here depends on one.

This is Azure/azure-sdk-for-rust's own configuration. It tells Claude Code and Codex how to work on azure-sdk-for-rust 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 azure-sdk-for-rust configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is { git diff --staged --name-only --diff-filter=d; git diff --name-only --diff-filter=d; } | sort -u | ./eng/common/spelling/Invoke-Cspell.ps1.

About the project

Azure SDK for Rust is a collection of Rust libraries, organized as separate crates, for interacting with Azure services. Rust developers use the crates and examples to build applications that work with Azure. The catalogue entries provide coding-agent skills, instructions, agents, and MCP integrations for working with the SDK.

Azure/azure-sdk-for-rust · 886 stars · on GitHub

Reuse

Borrowing it

Nothing to install: this file belongs to Azure/azure-sdk-for-rust. 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/Azure/azure-sdk-for-rust/main/.github/skills/check-spelling/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/Azure/azure-sdk-for-rust

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 check-spelling

README.md
[![agentmods](https://agentmods.dev/badge/skills/azure/azure-sdk-for-rust/check-spelling/github.svg)](https://agentmods.dev/skills/azure/azure-sdk-for-rust/check-spelling)
Your own site
<a href="https://agentmods.dev/skills/azure/azure-sdk-for-rust/check-spelling"><img src="https://agentmods.dev/badge/skills/azure/azure-sdk-for-rust/check-spelling/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 check-spelling

Your own site · 80×15
<a href="https://agentmods.dev/skills/azure/azure-sdk-for-rust/check-spelling"><img src="https://agentmods.dev/badge/skills/azure/azure-sdk-for-rust/check-spelling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 474 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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 $0.00016 $0.00474
Opus 5.5 $0.00006 $0.00190
Sonnet 5.5 $0.00003 $0.00095
Haiku 4.5 $0.00002 $0.00047

Measured 1mo ago against content hash c9ac7353bd26, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

check-spelling 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 1mo 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.

.github/skills/check-spelling/SKILL.md · 55 lines

What it actually says

Spell checking

Usage

Get all staged and unstaged non-deleted files, then pipe them to the spell check script:

{ git diff --staged --name-only --diff-filter=d; git diff --name-only --diff-filter=d; } | sort -u | ./eng/common/spelling/Invoke-Cspell.ps1

Configuration

The root configuration is .vscode/cspell.json, and CI runs cSpell with this config via eng/common/spelling/Invoke-Cspell.ps1.

Each service directory (e.g., sdk/{service-directory}) or crate directory (e.g., sdk/{service-directory}/{crate-directory}) can have a .cspell.json that should import either a parent .cspell.json or .vscode/cspell.json from the root of the repo. Per-directory configs are loaded based on the paths of files being checked.

Fix spelling

Show a summary of the misspellings to the user. Prompt the user for which words should be replaced and which should be ignored.

For words that should be replaced, fix the misspellings directly in the source files. If you cannot confidently determine the correct spelling, ask the user.

For words that should be ignored, add them to the ignoreWords array in a .cspell.json file under sdk/{service-directory} or lower. If the file doesn't exist, create it with an import of either a parent .cspell.json or ../../.vscode/cspell.json from the root of the repo.

Example sdk/keyvault/.cspell.json:

{
  "import": [
    "../../.vscode/cspell.json"
  ],
  "ignoreWords": [
    "ciphertext",
    "purgeable"
  ]
}

Seldom used words can be ignored within the file they are used by adding an appropriate comment e.g.:

// cspell:ignore {word}

To disable cSpell for just the next line, use cspell:disable-next-line.

Testing

Run the same command again used to check spelling. All misspellings should be fixed.

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. 1mo ago First seen · 55 lines · 16 tokens per session scan A c9ac7353bd26

Subscribe to this mod's changes

check-spelling is a skill published in the GitHub repository Azure/azure-sdk-for-rust (886 stars, last pushed today), licensed MIT. It adds 16 tokens to every session and 474 once invoked, about $0.0001 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 2026-08-30.