Generates Angular 17+ standalone components, configures advanced routing with lazy loading and guards, implements NgRx state management, applies RxJS patterns, and optimizes bundle performance. Use when building Angular 17+ applications with standalone components or signals, setting up NgRx stores, establishing RxJS reactive patterns, performance tuning, or writing Angular tests for enterprise apps.
cli-developer
cli-developer is an open-source frontend skill for Claude Code and compatible agents, published by Jeffallan. Its author describes it as: “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,…”. The project has 11k stars on GitHub and is available under the MIT license. Add it to your setup with `/plugin marketplace add Jeffallan/claude-skills`.
What cli-developer does
1. **Analyze UX** — Identify user workflows, command hierarchy, common tasks. Validate by listing all commands and their expected `--help` output before writing code. 2. **Design commands** — Plan subcommands, flags, arguments, configuration. Confirm flag naming is consistent and no existing signatures are broken. 3. **Implement** — Build with the appropriate CLI framework for the language (see Reference Guide below). After wiring up commands, run ` --help` to verify help text renders correctly and ` --version` to confirm version output. 4. **Polish** — Add completions, help text, error messag…
Installation
Add cli-developer to your agent with:
/plugin marketplace add Jeffallan/claude-skillsAlways review a skill's source before installing it. This command comes from the skill's public repository; the linked repo is the source of truth for exact setup steps.
What's inside
The SKILL.md for cli-developer is organised into these sections:
- Core Workflow
- Reference Guide
- Quick-Start Example
- Node.js (commander)
- Constraints
- MUST DO
- MUST NOT DO
- Output Templates
- Knowledge Reference
When to use it
Reach for cli-developer when you want frontend help from your agent without writing the same instructions every session. Load the skill and the agent picks it up automatically for relevant tasks.
Strengths
- Clear MIT license — safe to read and adapt
- Ships in Jeffallan/claude-skills, an established project with 11,060 GitHub stars
- Actively maintained (recent commits)
Topics
Frequently asked questions
- What does cli-developer do?
- 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.
- How do I install cli-developer?
- Run /plugin marketplace add Jeffallan/claude-skills in your agent, then reload your skills. Review the source at https://github.com/Jeffallan/claude-skills before installing.
- Is cli-developer free to use?
- Yes. cli-developer is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Where does cli-developer come from?
- cli-developer ships inside Jeffallan/claude-skills, a repository that contains 41 catalogued skills in total. The repository's 11,060 GitHub stars apply to that whole collection, not to this skill on its own.
Related skills
More Frontend →Conducts structured requirements workshops to produce feature specifications, user stories, EARS-format functional requirements, acceptance criteria, and implementation checklists. Use when defining new features, gathering requirements, or writing specifications. Invoke for feature definition, requirements gathering, user stories, EARS format specs, PRDs, acceptance criteria, or requirement matrices.
Use when building cross-platform applications with Flutter 3+ and Dart. Invoke for widget development, Riverpod/Bloc state management, GoRouter navigation, platform-specific implementations, performance optimization.
Use when building game systems, implementing Unity/Unreal Engine features, or optimizing game performance. Invoke to implement ECS architecture, configure physics systems and colliders, set up multiplayer networking with lag compensation, optimize frame rates to 60+ FPS targets, develop shaders, or apply game design patterns such as object pooling and state machines. Trigger keywords: Unity, Unreal Engine, game development, ECS architecture, game physics, multiplayer networking, game optimization, shader programming, game AI.
Use when building, configuring, or debugging enterprise Java applications with Spring Boot 3.x, microservices, or reactive programming. Invoke to implement WebFlux endpoints, optimize JPA queries and database performance, configure Spring Security with OAuth2/JWT, or resolve authentication issues and async processing challenges in cloud-native Spring applications.