Purpose of the humanlayer/skills Repository: A Collection of Claude Code Skills

The humanlayer/skills repository is a collection of Claude Code skills that can be added to any project with a single npx command, bundling prompts, memory files, GitHub Actions workflows, and reference templates to extend Claude with domain-specific capabilities.

The humanlayer/skills repository serves as an open-source plugin ecosystem designed to enhance Anthropic's Claude Code with specialized, reusable capabilities. Instead of writing custom prompts for every project, developers can install pre-built skills that provide contextual knowledge for specific tasks. Understanding the purpose of the humanlayer/skills repository helps teams standardize their AI-assisted development workflows across multiple codebases.

What Is the humanlayer/skills Repository?

The humanlayer/skills repository functions as a centralized collection of Claude Code skills—modular extensions that augment Claude's ability to understand and manipulate code. Each skill operates as a self-contained package containing the prompts, memory files, and automation workflows necessary to perform specific development tasks.

According to the source code structure, skills are organized under the plugins/ directory, with each skill maintaining its own subdirectory containing documentation, metadata, and executable components. The repository's README.md serves as the primary entry point, documenting the universal installation command and cataloging available skills.

Core Skills Available in humanlayer/skills

The repository currently maintains five distinct skills, each targeting specific development workflows:

improve-claude-md

The improve-claude-md skill rewrites a project's CLAUDE.md file using <important if> blocks to make instructions clearer for Claude. Located at plugins/improve-claude-md/skills/improve-claude-md/SKILL.md, this skill analyzes existing documentation and restructures it for optimal LLM comprehension.

narrow-react-prop-types

Found at plugins/narrow-react-prop-types/skills/narrow-react-prop-types/SKILL.md, this skill narrows React component prop-type definitions to match actual runtime code paths. It reduces over-generalization from static analysis tools by including response templates and memory files that guide Claude toward more precise type definitions.

build-iterated-agentic-loop

This skill generates a local skill plus an iterated coding-agent workflow using GitHub Actions. Stored at plugins/build-iterated-agentic-loop/skills/build-iterated-agentic-loop/SKILL.md, it provides workflow YAML files, prompt templates, and TypeScript helpers for implementing continuous improvement loops in agentic systems.

design-control-loop

The design-control-loop skill guides an interactive interview to design custom agentic control loops (sensor, controller, actuator, disturbances). Located at plugins/design-control-loop/skills/design-control-loop/SKILL.md, it scaffolds resulting components and workflows while supplying interview prompts and complete example implementations.

show-me

This skill generates concise diagrams, code-shape sketches, and focused HTML artifacts to explain current topics. Found at plugins/show-me/skills/show-me/SKILL.md, it offers a simple /show-me command that returns visual explanations for complex concepts.

Architecture and File Structure

All skills in the humanlayer/skills repository share a common architecture that ensures consistency and discoverability:

1. SKILL.md – A markdown manifest describing the skill, CLI invocation command, and usage examples (e.g., plugins/improve-claude-md/skills/improve-claude-md/SKILL.md).

2. .claude-plugin/plugin.json – Metadata enabling discovery by the Claude plugin system (e.g., plugins/design-control-loop/.claude-plugin/plugin.json).

3. Reference assets – Prompt templates (*.md), memory files (*.md / *.yml), workflow definitions (*.yml), and optional TypeScript helpers (*.ts).

4. Installation entry point – The repository's top-level README.md explains the universal install command and lists available skills.

How to Install and Use Skills

Installing skills from the humanlayer/skills repository requires only the npx command. Once installed, skills are invoked using slash commands within your repository.

To install a specific skill:

npx skills add humanlayer/skills --skill improve-claude-md

After installation, invoke the skill using its designated command:

/improve-claude-md

Additional installation examples include:

# Adding the design-control-loop skill

npx skills add humanlayer/skills --skill design-control-loop
/design-control-loop

# Using the show-me skill for visual explanations

npx skills add humanlayer/skills --skill show-me
/show-me

The design-control-loop command runs an interactive interview and scaffolds the control loop components, while /show-me returns diagrams and HTML snippets for the current topic.

Summary

• The humanlayer/skills repository provides pre-built Claude Code skills installable via npx skills add humanlayer/skills --skill <name>.
• Each skill follows a standardized structure including SKILL.md documentation, .claude-plugin/plugin.json metadata, and reference assets.
• Available skills cover documentation improvement, React prop-type narrowing, agentic loop construction, control loop design, and visual explanation generation.
• Skills are invoked through slash commands (e.g., /improve-claude-md, /show-me) after installation.
• The architecture supports extensibility, allowing developers to plug domain-specific capabilities directly into any codebase.

Frequently Asked Questions

What is Claude Code and how does it relate to the humanlayer/skills repository?

Claude Code is Anthropic's LLM-powered coding assistant. The humanlayer/skills repository extends Claude Code by providing modular skills that inject domain-specific knowledge and automated workflows into the assistant, eliminating the need to write custom prompts for repetitive tasks.

How do I install a skill from the humanlayer/skills repository?

Use the npx skills add humanlayer/skills --skill <skill-name> command, replacing <skill-name> with the identifier of the desired skill (e.g., improve-claude-md or design-control-loop). After installation, invoke the skill using its slash command prefix (e.g., /improve-claude-md).

Can I create custom skills using this repository as a template?

Yes. The repository's architecture, including the SKILL.md manifest structure and .claude-plugin/plugin.json metadata format, serves as a reference implementation for creating custom Claude Code skills. Study the reference assets in plugins/*/skills/*/references/ for implementation patterns.

What file format defines a skill's metadata and commands?

Each skill defines its metadata and commands in a SKILL.md file located within the skill's directory (e.g., plugins/show-me/skills/show-me/SKILL.md). Additionally, the .claude-plugin/plugin.json file provides machine-readable metadata for plugin discovery and integration.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}