Cli Just

Just is a command runner like make but with cleaner syntax, and this skill helps Claude write justfiles with proper structure. It covers the essentials: recipe attributes for confirmation prompts and OS restrictions, the arg system for CLI-style flags (added in v1.46), built-in constants for terminal colors, and module imports. The quick reference tables are genuinely useful since Just's attribute system has grown complex over recent versions. If you're using Just for task automation and want Claude to generate recipes that follow current patterns, including check/write workflows and proper shell settings, this gets you there. The skill requires unstable features enabled for modules and user-defined functions, so keep that in mind.

skills.sh installs: 792
GitHub stars: 104
last updated: Aug 21, 2026

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Install

$ npx -y skills add paulrberg/agent-skills --skill cli-just --agent claude-code

Installs into .claude/skills of the current project.

Files

Just Command Runner

Create readable task automation that matches the repository's installed Just version and existing justfile conventions.

Defaults

Inspect just --version, the existing justfile/module tree, and just --list before editing. Installed capabilities and existing syntax are authoritative over this skill's examples.
Preserve bespoke formatting. Do not rewrite a justfile with just --fmt. Use just --fmt --check only when the repository explicitly treats the built-in formatter as authoritative. just --dump is inspection output, not a formatting source.
Define multi-item string sequences one item per line with a parenthesized concatenation. Keep a trailing separator in every non-final item. Do not combine them into one long string. Triple-quoted strings are for values whose newlines are semantic, not visual wrapping. For example:
```
check-steps := (
  "event-class-coverage " +
  "orphan-disposal " +
  "price-coverage"
)
```
When creating a new standalone justfile, use the user's section-banner style. Existing repository organization overrides that style.