Agent skill

Rust Expert

Expert Rust programming assistant focused on idiomatic code, safety, and performance

MITAuto-check passedDevelopment

Install Rust Expert

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.kota/skills/rust-expert .claude/skills/rust-expert && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .claude/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.kota/skills/rust-expert .agents/skills/rust-expert && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .agents/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.kota/skills/rust-expert .cursor/skills/rust-expert && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .cursor/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/StepfenShawn/kota.git --path .kota/skills/rust-expert

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.kota/skills/rust-expert .gemini/skills/rust-expert && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .gemini/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .github/skills && cp -r skills-src/.kota/skills/rust-expert .github/skills/rust-expert && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .github/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add StepfenShawn/kota --skill rust-expert -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install StepfenShawn/kota rust-expert --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/StepfenShawn/kota.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.kota/skills/rust-expert .opencode/skills/rust-expert && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "rust-expert" agent skill from https://github.com/StepfenShawn/kota/tree/main/.kota/skills/rust-expert into .opencode/skills/rust-expert/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rust-expert", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: rust-expert
GitHub stars: 100
Token cost: ~366 tokens
SKILL.md length: 128 words
Files: 1
Skills in repo: 1
Repo updated: Apr 8, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Expert Rust programming assistant focused on idiomatic code, safety, and performance

Works in 5 steps: Safety First: Prioritize memory safety… → Idiomatic Code: Use Rust idioms and… → Error Handling: Use Result and ?… → …
Development work in your project
SKILL.md covers Guidelines, Code Review Checklist and Examples
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Rust Expert is an agent skill from StepfenShawn/kota. Expert Rust programming assistant focused on idiomatic code, safety, and performance

Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. It works with Rust. The repository describes itself as: A lightweight, highly extensible ai code agent, built in Rust. The licence is MIT.

When your agent uses it

Development work in your project

Example prompts

“/rust-expert”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Safety First: Prioritize memory safety and thread safety
Idiomatic Code: Use Rust idioms and patterns (iterators, pattern matching, etc.)
Error Handling: Use Result and ? operator appropriately
Performance: Consider zero-cost abstractions and avoid unnecessary allocations
Documentation: Include doc comments for public APIs

What it can do on your machine

Read from SKILL.md and the folder at commit 989cc1c. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are rust).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Rust Expert loads about 366 tokens when it runs. Until then it costs about 24 tokens; SKILL.md has 128 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~24
When it runs · the whole SKILL.md, loaded when a task matches: ~366

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from StepfenShawn/kota at commit 989cc1c, republished under its MIT licence (© StepfenShawn). 128 words, ~366 tokens.

Download SKILL.mdSave it as .claude/skills/rust-expert/SKILL.md (or your agent's skills folder).

name: rust-expert
description: Expert Rust programming assistant focused on idiomatic code, safety, and performance

Rust Expert Skill

You are an expert Rust programmer with deep knowledge of:

Ownership, borrowing, and lifetimes
Zero-cost abstractions and performance optimization
Async/await and concurrent programming
Error handling with Result and Option
Trait design and generic programming

Guidelines

When reviewing or writing Rust code:

Safety First: Prioritize memory safety and thread safety
Idiomatic Code: Use Rust idioms and patterns (iterators, pattern matching, etc.)
Error Handling: Use Result<T, E> and ? operator appropriately
Performance: Consider zero-cost abstractions and avoid unnecessary allocations
Documentation: Include doc comments for public APIs

Code Review Checklist

No unnecessary .clone() or .unwrap()
Proper error propagation with ?
Lifetime annotations are minimal and clear
Traits are used appropriately
No unsafe code without justification
Tests are included for new functionality

Examples

Good Pattern

rust

fn process_data(input: &str) -> Result<String, Error> {
    let parsed = input.parse()?;
    Ok(format!("Processed: {}", parsed))
}

Avoid

rust

fn process_data(input: &str) -> String {
    let parsed = input.parse().unwrap(); // Don't panic!
    format!("Processed: {}", parsed)
}

Files

Just SKILL.md in .kota/skills/rust-expert of StepfenShawn/kota.

Open the folder on GitHubat commit 989cc1c

Compare with similar skills

Rust Expert next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Rust Expert compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Rust Expert this skillStepfenShawn/kota	100	—	~366	Automated safety check: Pass	MIT	6 mo ago
Migrate Core Code to Submodulestinyhumansai/openhuman	42k	—	~2.6k	Automated safety check: Pass	GPL-3.0	today
OpenLogi macOS Permissions TriageAprilNEA/OpenLogi	23k	—	~2.5k	Automated safety check: Notes	Apache-2.0	today
Rust Best Practicesfarm-fe/farm	5.6k	3 repos	~1.1k	Automated safety check: Pass	MIT	18 days ago
RTK Rust Design Patternsrtk-ai/rtk	83k	—	~1.9k	Automated safety check: Pass	Apache-2.0	yesterday
Release Skillsnexmoe/eve	421	3 repos	~3.3k	Automated safety check: Pass	None	6 mo ago

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Works with

Rust

Questions about Rust Expert

What does Rust Expert do?

Expert Rust programming assistant focused on idiomatic code, safety, and performance. Rust Expert is an agent skill from StepfenShawn/kota.

When should I use Rust Expert?

Rust Expert fits situations like: development work in your project.

How do I install Rust Expert in Claude Code?

Run `npx skills add StepfenShawn/kota --skill rust-expert -a claude-code`. Or copy the skill folder (.kota/skills/rust-expert in StepfenShawn/kota) into .claude/skills/rust-expert in your project. Claude Code loads it when a task matches its description.

How do I install Rust Expert in Codex?

Run `npx skills add StepfenShawn/kota --skill rust-expert -a codex`. Or copy the skill folder (.kota/skills/rust-expert in StepfenShawn/kota) into .agents/skills/rust-expert in your project. Codex loads it when a task matches its description.

Can I use Rust Expert in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add StepfenShawn/kota --skill rust-expert -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rust-expert, .gemini/skills/rust-expert, .github/skills/rust-expert and .opencode/skills/rust-expert in your project.

What does Rust Expert need to run?

SKILL.md names no scripts, command-line tools or credentials: Rust Expert is instructions for the agent only.

Does Rust Expert access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Rust Expert safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Rust Expert use?

Rust Expert is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Rust Expert use?

About 366 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Rust Expert?

Skills that share tags, products or a category with Rust Expert: Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars), OpenLogi macOS Permissions Triage (AprilNEA/OpenLogi, 23k stars), Rust Best Practices (farm-fe/farm, 5.6k stars) and RTK Rust Design Patterns (rtk-ai/rtk, 83k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Rust Expert?

StepfenShawn (a GitHub user) maintains it in StepfenShawn/kota, which has 100 GitHub stars. The repository was last updated on April 8, 2026.

Source: StepfenShawn/kota on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Rust Expert

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Rust Expert Skill

Guidelines

Code Review Checklist

Examples

Good Pattern

Avoid

Files

Compare with similar skills

Similar skills

Migrate Core Code to Submodules

OpenLogi macOS Permissions Triage

Rust Best Practices

RTK Rust Design Patterns

Release Skills

Pnpm Engine

Related

Questions about Rust Expert