What it does

Practical reference and how-to for Full Site Editing (FSE) in WordPress: using theme.json, HTML block templates, template parts, block patterns, and custom blocks (block.json + render.php). Includes production examples, development workflow (@wordpress/scripts, wp-env), and best practices for accessibility and performance.

When to use it

Use this skill when creating new block themes, migrating classic themes to FSE, building custom server-rendered or client blocks, or standardising design tokens via theme.json. Not for heavy server-side application logic.

What's included

Scripts: none detected in this package (has_scripts=false)
References: architecture and migration guides referenced in the skill body
Instructions: step-by-step examples for theme.json, template structure, block.json metadata, server-side render.php, wp-env setup, and wp-scripts commands. Migration checklist and validation fixes included.