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Karpathy Skills can be installed in two ways: as a Claude Code plugin that applies the guidelines across all your projects, or as a CLAUDE.md file dropped into a single project. Choose the option that fits your workflow.
The Claude Code plugin applies the guidelines globally — every project you open in Claude Code inherits them. The CLAUDE.md approach applies the guidelines only to the project where the file lives.
Installing as a plugin is the fastest way to get the guidelines running across all your projects without touching individual repositories.
1

Add the marketplace

Inside Claude Code, run:
This registers the Karpathy Skills marketplace so Claude Code can find the plugin.
2

Install the plugin

After installation, the four behavioral guidelines are active in every Claude Code session — no per-project setup required.

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Cursor setup

If you use Cursor, the repository includes a committed Cursor project rule that applies the same guidelines. See the Cursor setup guide for instructions on enabling the rule in Cursor and using it across other projects.