Once you start writing more complicated apps that are hosted on a server using a database and you start having concerns about security and privacy and data protection, and especially if your codebase starts getting larger than a few thousand lines of code, you'll want to install these skills. 

## Graphify
[Graphify](https://github.com/safishamsi/graphify) - AI coding assistant skill that indexes your codebase and produces a queryable knowledge graph. App code + database schema + infrastructure in one graph. [[Graphify hook |Add a hook for Graphify]] to force Claude to read the knowledge graph before trying to read your codebase to save tokens. 

## Gstack by Garry Tan
[[Gstack by Garry Tan from Y Combinator]] turns Claude Code into a virtual engineering team — a CEO who rethinks the product, an engineering manager who locks architecture, a designer who catches AI slop, a reviewer who finds production bugs, a QA lead who opens a real browser, a security officer who runs OWASP + STRIDE audits, and a release engineer who ships the PR. Twenty-three specialists and eight power tools, all slash commands, all Markdown, all free, MIT license.

## Installing npm packages from GitHub
If you don't know how to install an npm package from GitHub, ask Claude Code or Codex to walk you through the steps.

Make sure you have a [[Sample CLAUDE.md file|CLAUDE.md]] file similar to this saved in your hidden `.claude` folder in your user root folder before you start installing npm packages. 
Note all the checks it does to make sure packages are safe.