code-understanding

Analyze codebases to generate hierarchical README.md documentation per directory.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/yulong-me/skills --skill code-understanding
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: code-understanding
Source: https://github.com/yulong-me/skills/tree/main/code-understanding
Command: npx skills add https://github.com/yulong-me/skills --skill code-understanding

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill eliminates the manual effort and complexity of understanding new codebases, generating technical documentation, or analyzing project structures. It automates the creation of comprehensive, hierarchical documentation, saving developers significant time and reducing cognitive load.

Core Features & Use Cases

  • Recursive Code Analysis: Systematically scans entire code repositories, identifying project types, programming languages, and architectural patterns.
  • Intelligent Documentation Generation: Automatically creates structured README.md files at each directory level, including module overviews, detailed explanations, and file summaries.
  • Use Case: When you're onboarding to a new project or need to quickly grasp an unfamiliar codebase, simply activate this skill. It will generate a complete, layered documentation set, allowing you to understand the project's architecture and functionality without tedious manual exploration.

Quick Start

Analyze the attached code repository and generate a detailed, hierarchical documentation structure with README.md files in each directory.

Frequently Asked Questions about code-understanding

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automatically generate documentation for my codebase?

Generate documentation by analyzing your codebase to automatically create hierarchical README.md files at each directory level. The system recursively scans repositories across Python, JavaScript/TypeScript, and Java, extracting functions, classes, and imports to produce structured module overviews, detailed explanations, and file summaries from root to leaf directories.

Can I generate README files for projects in multiple programming languages?

Yes, the tool supports language-aware file analysis across Python, JavaScript/TypeScript, and Java repositories of any size. It identifies project types and architectural patterns, then generates standardized README templates tailored to each language's conventions and structure.

What's the best way to understand a new codebase quickly?

Activate recursive code analysis to systematically scan the entire repository and automatically generate comprehensive, layered documentation. This produces per-directory READMEs with progressive understanding from root level down to individual file summaries, eliminating manual exploration.

Does this work with large or complex repositories?

Yes, recursive directory traversal applies across repositories of any size and complexity. The hierarchical documentation structure scales to large projects, providing modular understanding at each level without overwhelming cognitive load.

Can I preview the generated documentation before applying it?

Preview options are built in, allowing you to review the generated README structure before committing. The system also includes backup functionality to preserve existing documentation while generating new hierarchical content.

What file types and project structures does this analyze?

The tool analyzes project structure across any repository layout, identifying code files, imports, functions, and classes in supported languages. It generates standardized templates for each directory level, capturing architectural patterns and inter-module relationships.