Agent skill · writing content · sundial-org
code-explainer
Explain any code file in plain English. Use when you need to understand unfamiliar code.
Why this skill is useful
Provides detailed explanations of code structures and logic flows that the AI may not infer accurately on its own.
What it needs
About 2k tokens when loaded. Last updated 2026-03-07. 639 stars on the source repository.
What this skill does
Code Explainer Ever open a file and have absolutely no idea what it does? Maybe you inherited a codebase, maybe it's your own code from six months ago. Either way, this tool reads any code file and explains it in plain English. You pick the level, from beginner friendly to expert deep-dive, and it breaks down what every part does. One command. Zero config. Just works. Quick Start What It Does Reads any code file and produces a clear, human-readable explanation Supports three explanation levels: beginner, intermediate, and expert Works with any programming language the AI model understands Breaks down functions, classes, and logic flow step by step Prints the explanation right to your terminal Usage Examples Best Practices Start with beginner - Even if you're experienced, the beginner explanation often catches things you'd skim over. Work up from there. Use it during code review - When reviewing someone else's PR, run this on files you don't recognize. Saves time and catches misunderstandings. Pair it with documentation - Use the explanation as a starting point for inline comments or docs. It's faster than writing from scratch. Try it on legacy code - Old codebases with no docs are where this tool really shines. Point it at the scariest file first. When to Use This You just joined a team and need to understand the codebase fast You're reviewing a PR and one file makes no sense Legacy code with zero comments or documentation Learning a new language and want to understand example code How It Works The tool reads your source file and sends the content to an AI model along with your chosen explanation level. The model analyzes the code structure, identifies patterns, and produces a plain English walkthrough of what the code does and why. Requirements No install needed. Just run with npx. Node.js 18+ recommended. Part of the LXGIC Dev Toolkit This is one of 110+ free developer tools built by LXGIC Studios. No paywalls, no sign-ups, no API keys on free tiers. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills sundial-org/code-explainer