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courtneyr-dev
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WordPress Plugin, Block & Theme Development

Guide WordPress plugin, block, and theme development with security best practices.

6|2|Updated Dec 1, 2025
Search Tags:#security#plugin development#rest api#block development#wordpress#theme development#gutenberg
One-click install
npx skills add https://github.com/courtneyr-dev/wp-dev-prompts --skill wordpress-plugin-block-theme-development
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: WordPress Plugin, Block & Theme Development
Source: https://github.com/courtneyr-dev/wp-dev-prompts/tree/main/skills/wordpress-dev
Command: npx skills add https://github.com/courtneyr-dev/wp-dev-prompts --skill wordpress-plugin-block-theme-development

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides comprehensive guidance and best practices for developing secure and efficient WordPress plugins, custom blocks, and block themes, ensuring compatibility with modern WordPress versions and PHP standards.

Core Features & Use Cases

  • Plugin Architecture: Learn best practices for structuring, hooking, and organizing plugin code.
  • Block Development: Master creating static, dynamic, and interactive blocks using block.json and the Interactivity API.
  • Block Themes: Understand theme.json configuration and the structure of modern block themes.
  • Security: Implement the "Security Trinity" (sanitize, validate, escape) and use nonces and capabilities.
  • REST API & Abilities API: Develop robust APIs and leverage the Abilities API for feature management.
  • Use Case: You need to build a new custom Gutenberg block for a client's website that displays dynamic content fetched from a custom REST API endpoint. This Skill will guide you through setting up the block, registering the API route, and ensuring secure data handling.

Quick Start

Use the wordpress-dev skill to scaffold a new WordPress plugin with a basic structure.

Frequently Asked Questions about WordPress Plugin, Block & Theme Development

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I build a custom Gutenberg block with dynamic content?▼

The Security Trinity in WordPress plugin development requires you to sanitize user input, validate data logic, and escape output. You must also verify nonces and check user capabilities to prevent unauthorized actions and cross-site scripting attacks.

What is the best way to structure a WordPress plugin using OOP?▼

Block themes use theme.json to configure global styles, block layouts, and color palettes. This modern WordPress theme structure replaces traditional PHP templates, allowing full site editing capabilities directly within the Gutenberg editor.

How does the Interactivity API work with block development?▼

You can manage feature availability in your WordPress plugin by leveraging the Abilities API. This API provides a structured way to handle feature management, ensuring robust and controlled exposure of plugin functionality to specific users.

Do I need to use nonces and capabilities for WordPress REST API routes?▼

Yes, you need to use nonces and capabilities when developing WordPress REST API routes. Implementing these security measures ensures that only authenticated users with proper permissions can access or modify data through your custom endpoints.

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