rust

Mental-model reset for Rust. Use when writing or reviewing Rust code to shift from "it compiles" to "thinks in Rust." Triggers on Rust code review, "is this idiomatic", borrow-checker errors, API design, domain modeling, ownership, lifetimes, errors, traits, async/Tokio, unsafe, serde, FFI, tests, performance, Cargo structure, .rs files, Cargo.toml, rustc diagnostics, clippy findings, Result/Option, thiserror vs anyhow, newtype, typestate, enum vs trait, dyn Trait, Send/Sync, Pin, Miri, PyO3, napi-rs, cxx, UniFFI, wasm-bindgen, serde attributes, or feature unification.

1.05x

Quality

80%

Does it follow best practices?

Impact

99%

1.05x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Optimize this skill with Tessl

npx tessl skill review --optimize ./rust/SKILL.md

Evaluation results

98%

Configuration Loader Library

Library error type design

Criteria

Without context

With context

thiserror dependency

100%

No crate-wide Error enum

100%

Structured error variants

100%

No bare String variant

100%

Error chain preserved

100%

Domain-vocabulary naming

80%

Result type alias

100%

No anyhow in public API

100%

thiserror derive

100%

Selective #[from] usage

100%

DESIGN.md explains scoping rationale

100%

99%

Order Management Domain Model

Domain type modeling with newtypes and enums

Criteria

Without context

With context

Newtype identifiers

100%

Private newtype fields

100%

87%

Order status as enum

100%

No bool state fields

100%

Option over sentinel

100%

Exhaustive match on status

25%

100%

Standard traits on value types

100%

Iterator usage in total_price

100%

Borrow in function signatures

100%

No kind+Option antipattern

100%

Single-entity struct

100%

NOTES.md explains modeling choices

100%

Async Job Processing Service

Async worker pool with bounded concurrency

Criteria

Without context

With context

tokio::fs not std::fs

100%

spawn_blocking for CPU work

100%

HTTP timeout

100%

Bounded concurrency

100%

Arc for shared state

100%

Mutex not held across .await

100%

Shared state in newtype/wrapper

100%

Bounded channel or Semaphore

100%

ARCHITECTURE.md completeness

100%

No std::thread::sleep in async

100%

Repository: joshuadavidthomas/agent-skills
Commit: 40067f1

Evaluated: 2 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Configuration Loader Library Order Management Domain Model Async Job Processing Service

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