Build secure WordPress plugins with core patterns for hooks, database interactions, Settings API, custom post types, REST API, and AJAX. Covers three architecture patterns (Simple, OOP, PSR-4) and the Security Trinity. Use when creating plugins, implementing nonces/sanitization/escaping, working with $wpdb prepared statements, or troubleshooting SQL injection, XSS, CSRF vulnerabilities, or plugin activation errors. ajaxurl => admin_url( admin-ajax.php ), nonce => wp_create_nonce( mypl-ajax-nonce
/plugin marketplace add jezweb/claude-skills/plugin install wordpress-plugin-core@jezweb/claude-skills