# Explain Code

> Explains code with multiple levels of detail — high-level purpose, line-by-line walkthrough, data flow diagrams, and design rationale. Use when onboarding to unfamiliar code or trying to understand complex logic.

- **Type:** Skill
- **Install:** `agentstack add skill-viknesh20-20-claude-code-tool-kit-explain-code`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [viknesh20-20](https://agentstack.voostack.com/s/viknesh20-20)
- **Installs:** 0
- **Category:** [Cloud & Infrastructure](https://agentstack.voostack.com/c/cloud-infrastructure)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [viknesh20-20](https://github.com/viknesh20-20)
- **Source:** https://github.com/viknesh20-20/claude-code-tool-kit/tree/master/.claude/skills/explain-code
- **Website:** https://viknesh20-20.github.io/claude-code-tool-kit/

## Install

```sh
agentstack add skill-viknesh20-20-claude-code-tool-kit-explain-code
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Code Explanation

## Instructions

### Step 1: Identify the Target
Read the specified file, function, or module completely. Also read:
- Any imports/dependencies it uses
- Any files that import/call it (to understand usage context)
- Recent git history for the file: `git log --oneline -10 `

### Step 2: Provide Multi-Level Explanation

#### Level 1 — One-Sentence Summary
What does this code do in plain English? A non-technical person should understand this.

#### Level 2 — High-Level Overview
- **Purpose**: What problem does it solve?
- **Inputs**: What goes in? (parameters, config, env vars, external data)
- **Outputs**: What comes out? (return values, side effects, events emitted)
- **Dependencies**: What does it rely on?
- **Callers**: Who uses this? In what context?

#### Level 3 — Detailed Walkthrough
Walk through the code section by section:
- Explain the logic flow with numbered steps
- Highlight non-obvious decisions ("this uses X instead of Y because...")
- Note any error handling and what triggers each path
- Explain any performance-sensitive sections

#### Level 4 — Data Flow Diagram
Create an ASCII diagram showing:
```
[Input] → [Processing Step 1] → [Processing Step 2] → [Output]
                ↓                       ↓
         [Side Effect 1]         [Side Effect 2]
```

### Step 3: Highlight Key Details
- **Tricky Parts**: Code that might confuse a new reader
- **Assumptions**: Implicit assumptions the code makes
- **Edge Cases**: How are boundary conditions handled?
- **History**: Why was it written this way? (use `git blame` for context)

### Step 4: Related Code
List the most important related files/functions that someone exploring this code should read next.

---

## Output Style
- Use clear section headers
- Include code snippets with line references
- Use analogies where helpful
- Adjust technical depth based on the complexity of the code

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [viknesh20-20](https://github.com/viknesh20-20)
- **Source:** [viknesh20-20/claude-code-tool-kit](https://github.com/viknesh20-20/claude-code-tool-kit)
- **License:** MIT
- **Homepage:** https://viknesh20-20.github.io/claude-code-tool-kit/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-viknesh20-20-claude-code-tool-kit-explain-code
- Seller: https://agentstack.voostack.com/s/viknesh20-20
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.