Build for Plicine

These pages are for developers and their agents: making your own blocks and themes. A block is a small TypeScript and React package; a theme is CSS and a few HTML templates. If you or your agent can write those, you can make anything a page needs.

Every step works with nothing but the app installed. The plicine command comes inside it: Plicine > Install Command-Line Tool… puts it in your terminal (where it goes). The one extra is Bun, and only when a block has npm dependencies of its own.

What you make is a file in your own folder. A .block or a .theme sits in your vault, travels with it, and works for everyone who opens it, with no registry and no account.

Page	What it's for
Writing a block	From create-block to a packed, approved block, and what makes a block pleasant to use
Writing a theme	From an empty folder to tokens, fonts, a cover and a running footer
Building with an AI agent	Briefing an agent, the tools Plicine gives it, and AGENTS.md
The .block package	Layout, manifest, the module contract, capabilities and what the compiler refuses
The .theme package	Layout, every token, the CSS hooks and the template variables

It helps to have read Documents and How blocks work first. The built-in blocks a document can already use are in Core blocks, and the commands are in the CLI reference.