rust-best-practices SKILL.md skillA

rust-best-practices from kalarislabs/skill-doctor is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add kalarislabs/skill-doctor/rust-best-practices@v1.1.1

Pins v1.1.1 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
kalarislabs/skill-doctor
Path
skills/rust-best-practices/SKILL.md
Versions recorded
1
Latest version
v1.1.1, committed Sep 10, 2026
Size
2,129 bytes
Repository stars
14
License
Apache-2.0

Guide for writing idiomatic Rust code based on Apollo GraphQL's best practices handbook. Use this skill when: (1) writing new Rust code or functions, (2) reviewing or refactoring existing Rust code, (3) deciding between borrowing vs cloning or ownership patterns, (4) implementing error handling with Result types, (5) optimizing Rust code for performance, (6) writing tests or documentation for Rust projects.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Rust Best Practices

Apply these guidelines when writing or reviewing Rust code. Based on Apollo GraphQL's [Rust Best Practices Handbook](https://github.com/apollographql/rust-best-practices).

## Best Practices Reference

Before reviewing, familiarize yourself with Apollo's Rust best practices. Read ALL relevant chapters in the same turn in parallel. Reference these files when providing feedback:

- [Chapter 1 - Coding Styles and Idioms](references/chapter_01.md): Borrowing vs cloning, Copy trait, Option/Result handling, iterators, comments, when to extract a function (duplication vs. wrong abstraction)
- [Chapter 2 - Clippy and Linting](references/chapter_02.md): Clippy configuration, important lints, workspace lint setup
- [Chapter 3 - Performance Mindset](references/chapter_03.md): Profiling, avoiding redundant clones, stack vs heap, zero-cost abstractions
- [Chapter 4 - Error Handling](references/chapter_04.md): Result vs panic, thiserror vs anyhow, error hierarchies
- [Chapter 5 - Automated Testing](references/chapter_05.md): Test naming, one assertion per test, snapshot testing
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add kalarislabs/skill-doctor/rust-best-practices@sha256:b170cccceeed6cbf

The line at the top of this page pins the label v1.1.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rvnwpgnlitbndk5n.svg)](https://markdownregistry.com/a/art_rvnwpgnlitbndk5n)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 10, 2026.

versioncommittedcommitsizeaudit
v1.1.1 latest2026-09-10 bd96e48 2,129 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2129 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

kalarislabs/skill-doctor · 14 stars · license Apache-2.0 · pushed 2026-11-01 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rvnwpgnlitbndk5n
GET https://markdownregistry.com/api/v1/resolve?ref=kalarislabs/skill-doctor/rust-best-practices
GET https://markdownregistry.com/api/v1/blob/b170cccceeed6cbfd60d94e1093d568e702c6435336f5028ab6305cb7a85580a

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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