Understand
Multi-agent codebase scanner that builds an interactive knowledge graph of every file, function, and dependency, with a guided tour for onboarding onto unfamiliar code.
About this skill
name: understand-codebase description: Use when Multi-agent codebase scanner that builds an interactive knowledge graph of every file, function, and dependency, with a guided tour for onboarding onto unfamiliar code.
Understand
Solves the paralysis of opening a 200,000-line codebase with no idea where to start. Running /understand triggers multiple agents to scan the entire project, extracting every file, function, and dependency relationship into a knowledge graph. Running /understand-dashboard opens an interactive dashboard where clicking any node explains what that code does and what it connects to, organized by architecture layer. A guided tour feature walks through the architecture in a recommended reading order. It also ingests PDFs, markdown, and even images via vision, folding them into the same knowledge graph, and the graph persists on disk so it can be diffed against future code changes.
What you get
- Full-codebase knowledge graph, interactive clickable architecture dashboard, guided onboarding tour in recommended reading order, supports code plus PDFs/markdown/images, persistent graph that can diff against future changes.
Customize your output
- Choose which architecture layers to prioritize in the guided tour and which file types to ingest into the graph.
Example output
Ran /understand on a 200k-line unfamiliar repo — produced a full dependency graph and a guided tour explaining the auth layer, API layer, and data layer in the recommended order to read them.
Best for
Developers inheriting unfamiliar codebases, new hires onboarding onto large projects, anyone needing a fast mental model of a big repo.
Source: Korean Claude Code Creator · https://www.youtube.com/watch?v=UClLUoGaCxU Category: Development / Onboarding · Priority: Standard
SKILL.md preview
---
name: understand-codebase
description: Use when Multi-agent codebase scanner that builds an interactive knowledge graph of every file, function, and dependency, with a guided tour for onboarding onto unfamiliar code.
---
# Understand
Solves the paralysis of opening a 200,000-line codebase with no idea where to start. Running /understand triggers multiple agents to scan the entire project, extracting every file, function, and dependency relationship into a knowledge graph. Running /understand-dashboard opens an interactive dashboard where clicking any node explains what that code does and what it connects to, organized by architecture layer. A guided tour feature walks through the architecture in a recommended reading order. It also ingests PDFs, markdown, and even...