SkillHey.
Submit a skill

Codebase Understanding Skills for Claude Code, Codex & AI Agents

These skills help an agent learn an unfamiliar codebase before editing it. They cover structural code search, dependency and call graphs, change impact analysis and packing a repo into context.

23 skills

Start here

Code review graph architecture
Free
Testing & security

Review Changes

Review code changes using detected modifications and their effects on dependent code.

32.7KStars3KForks
Repository last pushed
tirth8205

EGM Drift Report

Google

Compare design documents and READMEs with the current codebase.

  • documentation
  • codebase-analysis
17.8KStars1.3KForks
Repository last pushed
Understand Anything codebase graph
Free
Research & data

Understand Anything: Codebase Questions

Answer project questions using the existing knowledge graph and relevant source files.

92.3KStars7.9KForks
Repository last pushed
Egonex-AI

ast-grep Code Search

ast-grep

Turn a code search request into an ast-grep pattern or rule, test it against an example, and search the project.

  • code search
  • ast
904Stars37Forks
Repository last pushed

Explore Codebase Understanding skills

19 skills
RecommendedNewest first
Understand Anything codebase graph
Free
Testing & security

Understand Anything: Change Impact

Explain Git diffs or pull requests, affected components and potential change risks.

92.3KStars7.9KForks
Repository last pushed
Egonex-AI
Code review graph architecture
Free
Research & data

Build Review Graph

Build and incrementally update the dependency graph used by code-review-graph.

32.7KStars3KForks
Repository last pushed
tirth8205
Understand Anything codebase graph
Free
Research & data

Understand Anything: Codebase Analysis

Build or incrementally update a codebase knowledge graph with architecture and dependency relationships.

92.3KStars7.9KForks
Repository last pushed
Egonex-AI
Code review graph architecture
Free
Development & APIs

Graph Guided Debugging

Use a repository knowledge graph to locate relevant code and investigate reported issues.

32.7KStars3KForks
Repository last pushed
tirth8205
Repomix output file in a coding workspace
Free
Development & APIs

Repomix Explorer

Pack local or remote repositories with Repomix, then inspect structure, patterns, and token usage.

29.2KStars1.6KForks
Repository last pushed
yamadashy
Ponytail code reuse example
Free
Testing & security

Ponytail: Codebase Audit

Produce a ranked repository audit covering bugs, risky untested code, slow paths and code bloat.

189.4KStars10.5KForks
Repository last pushed
DietrichGebert

Happy Control-flow Diagrams

slopus

Trace real triggers, call chains, payloads and state changes into compact ASCII flow diagrams.

  • diagrams
  • code analysis
  • software architecture
24.6KStars2.1KForks
Repository last pushed
Git worktrees for separate branches and parallel tasks.
Free
Development & APIs

Private GitHub Repository Search

Refresh a local repository mirror and search across authorized public and private repositories with ripgrep.

10.3KStars825Forks
Repository last pushed
ykdojo

Repo Analyzer

Joseph Magly

Analyze a repository’s structure, documentation, dependencies and contribution patterns.

  • code-analysis
229Stars36Forks
Repository last pushed
Graphify knowledge graph
Free
Research & data

Graphify

Turn code and documents into a persistent knowledge graph for architecture questions and exploration.

146.4KStars14KForks
Repository last pushed
Graphify-Labs

ast-grep Agent Skills

ast-grep

Use ast-grep for structural code search and compact source outlines.

  • code analysis
904Stars37Forks
Repository last pushed
Official Claude-Mem demonstration: a coding session beside a browser showing persistent observations.
Free
Other utilities

Claude-Mem Smart Explore

Explore a codebase with tree-sitter search, outlines, and selective symbol expansion instead of loading every file.

116.9KStars10.1KForks
Repository last pushed
Alex Newman (thedotmack)

ast-grep Outline

ast-grep

Map file and directory structure, imports, exports and direct members with ast-grep outline.

  • code navigation
  • ast
904Stars37Forks
Repository last pushed

Improve Codebase Architecture

LibreChat-AI

Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.

  • architecture
  • codebase-analysis
47KStars9.7KForks
Repository last pushed
Code review graph architecture
Free
Development & APIs

Graph Guided Refactoring

Plan refactoring with dependency relationships and change impact analysis.

32.7KStars3KForks
Repository last pushed
tirth8205
Code review graph architecture
Free
Research & data

Explore Codebase

Explore repository structure, symbols, and dependencies through the code review knowledge graph.

32.7KStars3KForks
Repository last pushed
tirth8205
Understand Anything codebase graph
Free
Documents

Understand Anything: Project Onboarding

Generate an onboarding guide that introduces a project using its knowledge graph.

92.3KStars7.9KForks
Repository last pushed
Egonex-AI

Related topics

Development 246 skillsFrontend Development 92 skillsAPI & Backend 37 skillsCLI & Terminal 35 skillsRefactoring & Code Quality 32 skillsSoftware Architecture 30 skillsReact & Next.js 28 skills

How to choose Codebase Understanding skills

Use ast-grep or graph skills to answer specific questions, impact analysis before a risky change, and repo packing when you need the whole project in context.

  • Answer questions about an unfamiliar repo
  • Estimate the impact of a change
  • Search code by structure, not text