rust-polish

rust-polish is a command for coding agents from mathisk2095/jko-claude-plugins. It costs 41 tokens per session (692 once invoked), scanned A, original, MIT.

A final Rust code-quality command for the stage before merging changes. It checks compiler-assisted style warnings, formatting, unused code, debug output, documentation, and whether errors are handled.

In plain words
What is it for?
Use it before merging a Rust change to run Clippy, check formatting, remove dead code and debug artifacts, review public documentation, and inspect every Result value.
Why use it?
It catches small but important issues that are easy to overlook after the main feature works, such as unfinished code, ignored errors, missing documentation, or leftover debugging statements.

Command

Part of the rust plugin — 1 skill, 5 commands shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/mathisk2095/jko-claude-plugins/rust-polish
Clone the repo
git clone --depth 1 https://github.com/mathisk2095/jko-claude-plugins

Or install rust, the plugin that ships this one along with the rest of its 1 skill, 5 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for rust-polish

README.md
[![agentmods](https://agentmods.dev/badge/commands/mathisk2095/jko-claude-plugins/rust-polish.svg)](https://agentmods.dev/commands/mathisk2095/jko-claude-plugins/rust-polish)
Your own site
<a href="https://agentmods.dev/commands/mathisk2095/jko-claude-plugins/rust-polish"><img src="https://agentmods.dev/badge/commands/mathisk2095/jko-claude-plugins/rust-polish.svg" alt="Measured on agentmods" height="20"></a>
Per session 41 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 692 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00041 $0.00692
Opus 5 $0.00020 $0.00346
Sonnet 5 $0.00008 $0.00138
Haiku 4.5 $0.00004 $0.00069

Measured 4d ago against content hash c2f7c3ff08fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rust-polish scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/rust/commands/rust-polish.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Rust Polish

The final pass before merge. Polish is the discipline of caring about what most people skip. Do not polish work that is not functionally complete.

The 10-Dimension Checklist

Work through each dimension in order.

1. Clippy Clean

cargo clippy --all-targets --all-features -- -D warnings 2>&1 | head -40

Fix every warning. No suppressions without #[expect(lint, reason = "...")].

2. Formatting

cargo fmt --check

If any diffs, run cargo fmt.

3. Dead Code

rg --type rust '(todo!|unimplemented!|#\[allow\(dead_code|#\[allow\(unused)' src/ -n

Remove all todo!(), unimplemented!(), #[allow(dead_code)], #[allow(unused)]. Either use it or delete it.

4. Debug Artifacts

rg --type rust '(println!|dbg!|eprintln!)' src/ --glob '!*test*' -n

Remove or replace with structured logging (tracing/log).

5. Documentation

cargo doc --no-deps 2>&1 | rg 'warning' | head -20

Every pub item needs a doc comment. First line: complete sentence, third person, ends with period. Add # Examples for key types and functions.

6. Error Handling Completeness

Scan for:

  • let _ = fallible_call() — is the error intentionally discarded? Add a comment if so.
  • Bare ? without .context() — add context at every propagation point.
  • unwrap() / expect() outside tests — replace with ?.

7. Test Coverage

cargo test 2>&1 | tail -5
cargo test --doc 2>&1 | tail -5

Verify tests pass. Check that doc examples compile. Key public functions should have at least one test.

8. Dependency Hygiene

cargo audit 2>&1 | head -20

No known vulnerabilities. Remove unused dependencies.

9. Public API Surface

Check that:

  • No internal types are accidentally pub (should be pub(crate))
  • #[non_exhaustive] on public enums
  • No Arc, Mutex, Box in public function signatures (hide implementation details)

10. Consistency

  • Naming follows Rust conventions (snake_case functions, CamelCase types)
  • Error types follow the project's established pattern
  • Module structure reflects domain, not technical layers
  • Import style is consistent (use the project's convention)

Read the full file on GitHub · 84 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 84 lines · 41 tokens per session scan A c2f7c3ff08fa

Subscribe to this mod's changes

rust-polish is a command published in the GitHub repository mathisk2095/jko-claude-plugins (3 stars, last pushed 6d ago), licensed MIT. It adds 41 tokens to every session and 692 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.