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Rust Best Practices · leonardomso | DecimalAI

codingby leonardomso

Rust Best Practices

leonardomso/rust-skills

Source leonardomso/rust-skills ↗License MIT

Comprehensive Rust coding guidelines with 265 rules across 26 categories.

SkillScore91Maintained

Automatic

Coding pack

Last verified 8/22/2026

What it changes

Passed 20 of 22 test cases with the skill, and 18 of 22 without it.

Without skill82%

With skill91%

Checks it passed that the model alone missed

Adds `#![deny(clippy::correctness)]` at the crate root
Closes the job channel in the main goroutine to signal workers to terminate loops

2 fixed18 passed either way2 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +525%
Agent turns: 0%
Response time: -18%

Model gemini-3.6-flashMeasured 8/22/2026v120 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/leonardomso-rust-skills/SKILL.md https://app.decimal.ai/s/leonardomso-rust-skills/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add leonardomso-rust-skills, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/leonardomso-rust-skills/ and pins it in .decimal/skills.lock

decimalai skills add leonardomso-rust-skills

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/leonardomso-rust-skills/SKILL.md https://app.decimal.ai/s/leonardomso-rust-skills/SKILL.md

Raw file: /s/leonardomso-rust-skills/SKILL.md ↗ · machine-readable summary at /s/leonardomso-rust-skills.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

I am writing a Rust binary crate and want to configure workspace linting to strictly prohibit correctness bugs across the crate using Clippy attributes at the crate root. What lint attribute should I add to `#![...]` in `main.rs`?

What was checked, without and with the skill
Checked	Without skill	With skill
Adds `#![deny(clippy::correctness)]` at the crate root	Missed	Passed

case-19 · gemini-3.6-flash · 8/22/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md478 linessingle file

Rust Best Practices

Comprehensive guide for writing high-quality, idiomatic, and highly optimized Rust code. Contains 265 rules across 26 categories, prioritized by impact to guide LLMs in code generation and refactoring. Current for Rust 1.96 (2024 edition).

When to Apply

Reference these guidelines when:

Writing new Rust functions, structs, or modules
Implementing error handling or async code
Writing concurrent, parallel, or unsafe code
Designing public APIs for libraries
Reviewing code for ownership/borrowing issues
Optimizing memory usage or reducing allocations
Tuning performance for hot paths
Refactoring existing Rust code

Rule Categories by Priority

Priority	Category	Impact	Prefix	Rules
1	Ownership & Borrowing	CRITICAL	`own-`	12
2	Error Handling	CRITICAL	`err-`	12
3	Memory Optimization	CRITICAL	`mem-`	17
4	Unsafe Code	CRITICAL	`unsafe-`	7
5	API Design	HIGH	`api-`	17
6	Async/Await	HIGH	`async-`	18
7	Concurrency	HIGH	`conc-`	4
8	Compiler Optimization	HIGH	`opt-`	12
9	Numeric & Arithmetic Safety	HIGH	`num-`	5
10	Type Safety	MEDIUM	`type-`	13
11	Trait & Generics Design	MEDIUM	`trait-`	6
12	Conversions	MEDIUM	`conv-`	3
13	Const & Compile-Time	MEDIUM	`const-`	4
14	Serde	MEDIUM	`serde-`	8
15	Pattern Matching	MEDIUM	`pat-`	5
16	Macros	MEDIUM	`macro-`	8
17	Closures	MEDIUM	`closure-`	5
18	Collections	MEDIUM	`coll-`	4
19	Naming Conventions	MEDIUM	`name-`	16
20	Testing	MEDIUM	`test-`	15

Track record

Benchmark

20 / 22

test cases passed, vs 18 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

leonardomso / rust-skills

SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Rust Best Practices

When to Apply

Rule Categories by Priority

Track record

Benchmark

Adoption

SkillSafety

Source

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