Style Checker

What it does

When your agent uses it

• The user asks to check style
• Review codebase style
• Clean up a diff
• Verify coding conventions

Example prompts

• “Use the style-checker skill to enforce this monorepo's coding style rules by inspecting git diffs, reading…”
• “/style-checker”

Requirements

• Compatibility (from SKILL.md): Designed for coding agents working inside a git monorepo with shell access, file read access, and file editing tools.
• Pre-approved tools (allowed-tools): Bash(git:*), Bash(cargo:*), Bash(npm:*), Bash(pnpm:*), Bash(yarn:*), Read, Edit, MultiEdit

Workflow steps

6 steps, taken from the step headings in SKILL.md.

1. 1Inspect the current changes
2. 2Read the style guide
3. 3Analyze the diff
4. 4Fix violations directly
5. 5Re-check the diff
6. 6Run relevant validation

What it can do on your machine

Read from SKILL.md and the folder at commit 32d5373. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Bash(git:*)
  • Bash(cargo:*)
  • Bash(npm:*)
  • Bash(pnpm:*)
  • Bash(yarn:*)
  • Read
  • Edit
  • MultiEdit

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • git
  • cargo
  • npm
  • pnpm
  • yarn

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md. Its commands use git, npm, pnpm and yarn, which can reach the network depending on how they are called.

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Designed for coding agents working inside a git monorepo with shell access, file read access, and file editing tools.

  From compatibility in the SKILL.md frontmatter.

Context cost

Style Checker loads about 1.4k tokens when it runs, and up to ~6.9k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 552 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~91

When it runs · the whole SKILL.md, loaded when a task matches

~1.4k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~6.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from noumena-labs/Sipp at commit 32d5373, republished under its Apache-2.0 licence (© noumena-labs). 552 words, ~1,358 tokens.

name

style-checker

description

Enforces this monorepo's coding style rules by inspecting git diffs, reading .agents/skills/style-checker/references/style_guidance.md, fixing style violations, and reporting the result. Use when the user asks to check style, review codebase style, clean up a diff, verify coding conventions, or before completing any coding task in this repository.

allowed-tools

Bash(git:*), Bash(cargo:*), Bash(npm:*), Bash(pnpm:*), Bash(yarn:*), Read, Edit, MultiEdit

compatibility

Designed for coding agents working inside a git monorepo with shell access, file read access, and file editing tools.

.agents/skills/style-checker/references/style_guidance.md

git status --short
git diff
git diff --cached

.agents/skills/style-checker/references/style_guidance.md

cargo fmt
cargo clippy
cargo test
npm run typecheck
npm run lint
npm test
pnpm typecheck
pnpm lint
pnpm test
yarn typecheck
yarn lint
yarn test

Style check passed; no changes were needed.

Style check completed. I fixed two TypeScript style issues in lib/web/src/client.ts: added NodeNext .js import extensions and made the exported config map readonly. I ran pnpm typecheck and it passed.

© noumena-labs, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in .agents/skills/style-checker of noumena-labs/Sipp.

• SKILL.md
• references/style_guidance.md

Open the folder on GitHubat commit 32d5373