rust-expert SKILL.md skillA
rust-expert from mathisk2095/jko-claude-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mathisk2095/jko-claude-plugins/rust-expert@git:20260316.59861c1Pins git:20260316.59861c1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mathisk2095/jko-claude-plugins
- Path
plugins/rust/skills/rust-expert/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260316.59861c1, committed Mar 16, 2026
- Size
- 9,472 bytes
- Repository stars
- 3
- License
- MIT
This skill should be used when the user is writing, reviewing, debugging, or architecting Rust code. Detects edition and toolchain from the project. Provides expert critique covering ownership, error handling, unsafe review, async correctness, trait design, type system patterns, performance, SOLID principles, and Cargo/workspace practices. Use when the user asks "critique my Rust code", "review this module", "fix borrow checker error", "is this unsafe sound", "design error types…
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
This skill guides expert Rust development. Detect the project's edition and toolchain from `Cargo.toml` (`edition`, `rust-version`) and adapt guidance accordingly. Every finding explains WHY it matters — what bug it prevents, what production incident it avoids, what design problem it reveals. Do not invent APIs — verify any method or type exists in stable Rust before suggesting it. ## How to Think About Rust Problems Before fixing any issue, trace through the layers: - **Layer 3 — Domain (WHY)**: Business rules, performance constraints, deployment context. These constrain everything below. - **Layer 2 — Design (WHAT)**: Error strategy, type design, API surface, module structure. Check against SOLID and API Guidelines. - **Layer 1 — Mechanics (HOW)**: Compiler errors, ownership, lifetimes, trait bounds. Fix the immediate issue, but always trace UP. When a compiler error appears, reframe it as a design question: | Error | Don't Just Say | Ask Instead | |---|---|---| | E0382 (value moved) | "Clone it" | Who should own this data? | | E0597 (doesn't live long enough) | "Add a lifetime" | Is the scope boundary correct? | …
Read the whole file at its exact version.
How to install
mdr add mathisk2095/jko-claude-plugins/rust-expert@sha256:0c4b549df74c355bThe line at the top of this page pins the label git:20260316.59861c1, 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.
[](https://markdownregistry.com/a/art_fmalrnpvbckrouin)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 16, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9472 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
mathisk2095/jko-claude-plugins · 3 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fmalrnpvbckrouin GET https://markdownregistry.com/api/v1/resolve?ref=mathisk2095/jko-claude-plugins/rust-expert GET https://markdownregistry.com/api/v1/blob/0c4b549df74c355bf433020716d1b2835d075736d754b173470cee0a7a0c2bba
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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