codebase▌

Systematic codebase search and pattern discovery for locating implementations, understanding architecture, and answering location-based code questions. \n \n Supports three thoroughness levels (quick, medium, very thorough) ranging from 30 seconds to 10 minutes, scaling from broad file structure overview to exhaustive dependency tracing \n Uses multiple search strategies including grep/rg for text patterns, ast-grep for code structure, LSP tools for symbol references, and git history for context

Analyze codebases for architectural friction and propose module-deepening refactors as testability improvements. \n \n Explores codebases organically to surface shallow modules, tightly-coupled components, and untested seams rather than following rigid heuristics \n Applies John Ousterhout's \"deep module\" principle: small interfaces hiding large implementations for better testability and AI navigability \n Generates multiple radically different interface designs (minimalist, flexible, caller-o

Generate comprehensive architecture documentation from repository analysis.

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.

Search and navigate large codebases with semantic search, grep patterns, and file discovery. \n \n Supports three search modes: semantic search for conceptual queries, grep for exact text and regex patterns, and glob for file discovery by type or naming convention \n Includes workflow guidance for common scenarios like tracing function calls, understanding feature implementations, locating bugs, and performing impact analysis \n Provides language-specific patterns for Python, JavaScript, TypeScr

When agents struggle with a codebase, they are reflecting and amplifying the codebase's existing weaknesses. This skill evaluates codebases against five principles that determine agent effectiveness, and provides concrete guidance to improve each one. It adapts to the project's language and stack.

ln-620-codebase-auditor

You are a dependency security expert specializing in vulnerability scanning, license compliance, and supply chain security. Analyze project dependencies for known vulnerabilities, licensing issues, outdated packages, and provide actionable remediation strategies.

Generates comprehensive documentation for codebases - architecture, components, data flow, development guidelines.

Codebase Analysis \n Understanding-focused skill that builds foundational comprehension of codebase structure, patterns, flows, decisions, and context. Serves as foundation for downstream analysis skills (problem-analysis, refactor, etc.). \n When this skill activates, IMMEDIATELY invoke the script. The script IS the workflow. \n Invoke: