When should I use justfile-style?

justfile-style is useful in the following scenarios: • Refactoring existing justfiles to ensure documentation is concise and follows industry best practices. • Standardizing command-runner documentation across multiple repositories to maintain a consistent developer experience. • Simplifying single-line command comments to show the actual command, making the justfile more transparent for end-users. • Assisting in code reviews by providing a clear framework for evaluating the quality and clarity of justfile documentation.

When & Why to Use This Skill

This Claude skill provides standardized style guidelines for documenting justfile recipes. It helps developers maintain clean, concise, and readable command-runner configurations by optimizing documentation comments, reducing redundancy, and improving the scannability of automation scripts. By following these best practices, teams can ensure their project's task runners are self-documenting and easy to maintain.

Use Cases

Refactoring existing justfiles to ensure documentation is concise and follows industry best practices.
Standardizing command-runner documentation across multiple repositories to maintain a consistent developer experience.
Simplifying single-line command comments to show the actual command, making the justfile more transparent for end-users.
Assisting in code reviews by providing a clear framework for evaluating the quality and clarity of justfile documentation.

name	justfile-style
description	Style guidelines for justfile recipe documentation. Use when writing or editing justfiles to ensure consistent and concise documentation.

name

justfile-style

description

Style guidelines for justfile recipe documentation. Use when writing or editing justfiles to ensure consistent and concise documentation.

Justfile Style Guidelines

This skill provides best practices for writing justfile recipe documentation comments.

Doc Comment Simplification

For very short justfile recipes, change the doc comment string to be the entire command instead of a descriptive phrase.

When to Simplify

The cutoff for when to perform this refactoring should be approximately a single line of 120 characters
If the recipe is a shebang recipe, don't shorten the doc comment
If the recipe is multiple lines, or longer than 120 characters, don't shorten the doc comment

Example Transformation

❌ Before:

# Install dependencies
[group('setup')]
install:
    npm install

✅ After:

# npm install
[group('setup')]
install:
    npm install

Rationale

For simple, single-command recipes, the command itself is often more informative than a descriptive phrase. This approach:

Reduces redundancy: "Install dependencies" vs "npm install" convey the same information
Shows the actual command: Users can see exactly what will run
Maintains consistency: All simple recipes follow the same pattern
Improves scannability: The actual command is immediately visible

When NOT to Simplify

Keep descriptive doc comments for:

Multi-line recipes:

# Set up development environment
[group('setup')]
dev-setup:
    npm install
    cp .env.example .env
    just db-migrate

Shebang recipes:

# Generate API documentation
[group('docs')]
gen-docs:
    #!/usr/bin/env bash
    set -euo pipefail
    # ... multiple lines of bash script

Long single-line commands (>120 characters):

# Build production bundle with optimizations
[group('build')]
build-prod:
    webpack --mode production --config webpack.prod.js --optimization-minimize --output-path dist/

In these cases, a descriptive comment provides more value than repeating the complex command.