Skill: Click

Best practices for building CLI applications with Click including commands, groups, options, and testing.

When to Use

Apply this skill when building command-line interfaces with Click — commands, groups, options, arguments, and prompts.

Commands

• Use @click.command() for single commands, @click.group() for multi-command CLIs.
• Declare options with @click.option() and positional args with @click.argument().
• Use help= on every option and command for auto-generated help text.
• Use envvar= to allow environment variable fallback for sensitive options.

Groups

• Organize subcommands with @click.group() and group.add_command().
• Use @click.pass_context to share state between group and subcommands.