cli-developer

Use when building CLI tools, implementing argument parsing, or adding interactive prompts. Invoke for parsing flags and subcommands, displaying progress bars and spinners, generating bash/zsh/fish completion scripts, CLI design, shell completions, and cross-platform terminal applications using commander, click, typer, or cobra.

1.33x

Quality

100%

Does it follow best practices?

Impact

91%

1.33x

Average score across 6 eval scenarios

Securityby

Passed

No known issues

Evaluation results

97%

40%

File Sync CLI Tool

Node.js CLI error handling and UX

Criteria

Without context

With context

Commander framework

100%

Chalk for output

100%

Ora for spinners

100%

TTY color detection

50%

100%

SIGINT handler

100%

POSIX exit codes

33%

66%

Actionable error messages

100%

ESM package type

100%

Node engine constraint

100%

Bin field

100%

Stderr for errors

100%

UX decisions explained

100%

96%

42%

Database Migration CLI

Python CLI interactive and non-interactive modes

Criteria

Without context

With context

Typer framework

100%

Rich for output

100%

questionary for prompts

100%

CI detection

100%

Config priority order

55%

100%

Env var config override

100%

SIGINT handling

88%

100%

requires-python >= 3.10

100%

Correct dependencies

100%

Input validation

75%

100%

Proper exit codes

33%

55%

Stderr for errors

87%

100%

88%

14%

Log Archival CLI Tool

Go CLI configuration and progress indicators

Criteria

Without context

With context

Cobra framework

100%

Viper for configuration

100%

Viper env prefix

100%

Multi-path config

100%

62%

Determinate progress bar

22%

100%

Indeterminate spinner

100%

No stack traces to users

87%

SIGINT graceful exit

100%

POSIX exit codes

Cross-platform build

100%

Stderr for diagnostics

75%

100%

UX decisions documented

100%

Extend and Polish a Project Scaffolding CLI

Shell completions and help text structure

Criteria

Without context

With context

Shell completions included

100%

Completions for multiple shells

100%

USAGE section in help

100%

OPTIONS with short+long forms

100%

EXAMPLES in help

100%

Kebab-case flags

100%

No broken existing signatures

100%

--version flag works

100%

UX decisions explained

100%

Output template: 5 elements

80%

100%

Errors to stderr

100%

78%

16%

Build a Cross-Platform Developer Profile Manager CLI

Startup performance and cross-platform path handling

Criteria

Without context

With context

No hardcoded home paths

100%

Platform home API used

100%

Lazy loading of commands

Async file I/O

Startup performance noted

100%

Update check non-blocking

100%

Config stored in home dir

100%

Errors to stderr

100%

ESM module type

100%

Engine constraint

100%

Input validation

100%

92%

28%

Build a Service Health Status CLI

Color accessibility, NO_COLOR support, and error message patterns

Criteria

Without context

With context

NO_COLOR env var respected

100%

TTY detection for color

100%

Semantic color: errors red

100%

Semantic color: success green

100%

Symbols alongside colors

100%

Error message: context shown

100%

Error message: solution provided

100%

Stack traces hidden by default

100%

Verbose or debug mode present

Errors to stderr

100%

SIGINT handled

100%

Repository: jeffallan/claude-skills
Commit: 5b76101

Evaluated: 27 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

File Sync CLI Tool Database Migration CLI Log Archival CLI Tool Extend and Polish a Project Scaffolding CLI Build a Cross-Platform Developer Profile Manager CLI Build a Service Health Status CLI

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.