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Claude Code Repository Architecture Guide

A repo-specific conventions skill that teaches Claude the Claude Code CLI codebase layout, tool/command patterns, and naming rules.

Dev & CodingAdvanced★ 3,351⑂ 3,673AI score 5/10Last updated: Aug 29, 2026

What it does

Gives Claude a working mental model of the Claude Code CLI internals (TypeScript, Bun, React + Ink).

  • Tables mapping ~30 src/ directories to their roles (tools/, commands/, components/, coordinator/, memdir/, ...)
  • Startup sequence: main.tsx → entrypoints/init.ts → cli.tsx → MCP / Agent SDK modes
  • Copy-ready templates: buildTool() tool definitions and the three command types (PromptCommand, LocalCommand, LocalJSXCommand)
  • Conventions for the permission system (default/plan/bypassPermissions/auto, wildcard rules like Bash(git *)), bun:bundle feature flags, Zod validation at boundaries, lazy imports for circular deps
  • Naming tables for files, components, types, hooks, and constants

Who it's for

  • Developers hacking on the Claude Code CLI source or a fork of it
  • Anyone studying a real-world Ink + Bun terminal app architecture
  • Engineers learning how agent tool and slash-command registries are organized

Note: the src/ files it references are not bundled with the skill. Without that codebase it reads as reference documentation.

Usage examples

  1. "Add a /changelog slash command" → scaffolds a PromptCommand in src/commands/ with proper allowedTools and registers it in src/commands.ts.
  2. "Create a file-deletion tool" → generates a buildTool() skeleton implementing checkPermissions() and isReadOnly(), with UI.tsx and prompt.ts split out.
  3. "Gate this experimental feature" → wraps it in feature('...') from bun:bundle so it's dead-code-eliminated at build time.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/codeaashu/claude-code/HEAD/Skill.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the Skill.m folder from the GitHub repo codeaashu/claude-code into my ~/.claude/skills/claude-code-skill/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/codeaashu/claude-code.git /tmp/cc-skill && mkdir -p ~/.claude/skills/claude-code-skill && cp /tmp/cc-skill/Skill.md ~/.claude/skills/claude-code-skill/SKILL.md

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal.
  2. Clone the repo to a temp folder: git clone https://github.com/codeaashu/claude-code.git /tmp/cc-skill
  3. Create the skill folder: mkdir -p ~/.claude/skills/claude-code-skill
  4. Copy the file in: cp /tmp/cc-skill/Skill.md ~/.claude/skills/claude-code-skill/SKILL.md (the filename must be SKILL.md)
  5. Restart Claude Code and run /skills to confirm it is listed.
  6. Launch Claude Code inside the target codebase and ask something like "add a new tool following this repo's tool definition conventions".
View source on GitHub ↗License: NOASSERTION