What is code-formatter-installer?

A setup guide for code formatters and linters, which automatically arrange code and flag style or quality problems. It covers common tools for JavaScript, TypeScript, Python, Go, and Rust.

Use it to create formatter and linter configuration files, add format and lint commands, recommend editor settings, and suggest automatic checks before commits or in CI.

It removes the need to agree on coding style and configure these checks by hand. It also helps apply the same rules in editors, Git hooks, and continuous integration checks.

code-formatter-installer — Skill for Claude Code and Codex by patricio

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.

Any agent

npx skills add patricio0312rev/skillset --skill code-formatter-installer

Clone the repo

git clone --depth 1 https://github.com/patricio0312rev/skillset

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/patricio0312rev/skillset/code-formatter-installer/github.svg)](https://agentmods.dev/skills/patricio0312rev/skillset/code-formatter-installer)

Your own site

<a href="https://agentmods.dev/skills/patricio0312rev/skillset/code-formatter-installer"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skillset/code-formatter-installer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/patricio0312rev/skillset/code-formatter-installer"><img src="https://agentmods.dev/badge/skills/patricio0312rev/skillset/code-formatter-installer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,834 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5.1	$0.00075	$0.01834
Opus 5	$0.00037	$0.00917
Sonnet 5	$0.00015	$0.00367
Haiku 4.5	$0.00007	$0.00183

Measured 9d ago against content hash f0b8f38f59e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

code-formatter-installer 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 9d 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.

Origin

This is a copy

100% identical to code-formatter-installer — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

templates/foundation/code-formatter-installer/SKILL.md · 321 lines

How it starts

The opening of the file, as written. The whole thing — 321 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Formatter & Linter Installer

Establish consistent code formatting and linting across your project.

Core Workflow

Detect stack: Identify language/framework (JS/TS, Python, Go, Rust)
Choose tools: Select appropriate formatters and linters
Generate configs: Create config files with best-practice rules
Add scripts: Include npm/package scripts for format/lint
Configure editor: Provide VS Code, IntelliJ, Vim settings
Setup pre-commit: Add git hooks for automatic formatting
CI integration: Suggest GitHub Actions or CI config

Tool Selection by Stack

JavaScript/TypeScript

Formatter: Prettier
Linter: ESLint + typescript-eslint
Editor: EditorConfig
Hooks: Husky + lint-staged

Python

Formatter: Black + isort
Linter: Ruff or Flake8 + mypy
Hooks: pre-commit

Go

Formatter: gofmt + goimports
Linter: golangci-lint

Rust

Formatter: rustfmt
Linter: clippy

Configuration Templates

Prettier (.prettierrc.json)

{
  "semi": true,
  "trailingComma": "es5",
  "singleQuote": true,
  "printWidth": 100,
  "tabWidth": 2,
  "arrowParens": "avoid"
}

ESLint (.eslintrc.json)

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:react/recommended",
    "prettier"
  ],
  "rules": {
    "no-console": "warn",
    "@typescript-eslint/no-unused-vars": "error"
  }
}

EditorConfig (.editorconfig)

root = true

[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[*.py]
indent_size = 4

[*.md]
trim_trailing_whitespace = false

Python (pyproject.toml)

[tool.black]
line-length = 100
target-version = ['py311']

[tool.isort]
profile = "black"
line_length = 100

[tool.mypy]
strict = true
warn_return_any = true

Package Scripts

JavaScript/TypeScript (package.json)

Read the full file on GitHub · 321 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.

9d ago First seen · 321 lines · 75 tokens per session scan A f0b8f38f59e9

Subscribe to this mod's changes

code-formatter-installer is a skill published in the GitHub repository patricio0312rev/skillset (6 stars, last pushed 8mo ago), licensed MIT. It adds 75 tokens to every session and 1,834 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to code-formatter-installer, differing in 0 lines, and is treated as a copy.

Commits Git and workflow Languages TypeScript

code-formatter-installer