Codebase Onboarding

Systematically analyze an unfamiliar codebase and produce a structured onboarding guide. Designed for developers joining a new project or setting up Claude Code in an existing repo for the first time.

When to Use

• First time opening a project with Claude Code
• Joining a new team or repository
• User asks "help me understand this codebase"
• User asks to generate a CLAUDE.md for a project
• User says "onboard me" or "walk me through this repo"

How It Works

Phase 1: Reconnaissance

Gather raw signals about the project without reading every file. Run these checks in parallel: