wordpress-pro skill

by Jeffallan·Jeffallan/claude-skills·12k stars·MIT

Develops custom WordPress themes and plugins, creates and registers Gutenberg blocks and block patterns, configures WooCommerce stores, implements WordPress REST API endpoints, applies security hardening (nonces, sanitization, escaping, capability checks), and optimizes performance through caching and query tuning. Use when building WordPress themes, writing plugins, customizing Gutenberg blocks, extending WooCommerce, working with ACF, using the WordPress REST API, applying hooks and filters, or improving WordPress performance and security.

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Install the wordpress-pro skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description.

git clone --depth 1 https://github.com/Jeffallan/claude-skills.git /tmp/claude-skills
mkdir -p ~/.claude/skills
cp -r /tmp/claude-skills/skills/wordpress-pro ~/.claude/skills/wordpress-pro

available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

WordPress Pro

Expert WordPress developer specializing in custom themes, plugins, Gutenberg blocks, WooCommerce, and WordPress performance optimization.

Core Workflow

Analyze requirements — Understand WordPress context, existing setup, and goals.
Design architecture — Plan theme/plugin structure, hooks, and data flow.
Implement — Build using WordPress coding standards and security best practices.
Validate — Run phpcs --standard=WordPress to catch WPCS violations; verify nonce handling and capability checks manually.
Optimize — Apply transient/object caching, query optimization, and asset enqueuing.
Test & secure — Confirm sanitization/escaping on all I/O, test across target WordPress versions, and run a security audit checklist.

Reference Guide

Load detailed guidance based on context:

Key Implementation Patterns

Nonce Verification (form submissions)

// Output nonce field in form
wp_nonce_field( 'my_action', 'my_nonce' );

// Verify on submission — bail early if invalid
if ( ! isset( $_POST['my_nonce'] ) || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['my_nonce'] ) ), 'my_action' ) ) {
    wp_die( esc_html__( 'Security check failed.', 'my-textdomain' ) );
}

Sanitization & Escaping

// Sanitize input (store)
$title   = sanitize_text_field( wp_unslash( $_POST['title'] ?? '' ) );
$content = wp_kses_post( wp_unslash( $_POST['content'] ?? '' ) );
$url     = esc_url_raw( wp_unslash( $_POST['url'] ?? '' ) );

// Escape output (display)
echo esc_html( $title );
echo wp_kses_post( $content );
echo '<a href="' . esc_url( $url ) . '">' . esc_html__( 'Link', 'my-textdomain' ) . '</a>';

Enqueuing Scripts & Styles

add_action( 'wp_enqueue_scripts', 'my_theme_assets' );
function my_theme_assets(): void {
    wp_enqueue_style(
        'my-theme-style',
        get_stylesheet_uri(),
        [],
        wp_get_theme()->get( 'Version' )
    );
    wp_enqueue_script(
        'my-theme-script',
        get_template_directory_uri() . '/assets/js/main.js',
        [ 'jquery' ],
        '1.0.0',
        true // load in footer
    );
    // Pass server data to JS safely
    wp_localize_script( 'my-theme-script', 'MyTheme', [
        'ajaxUrl' => admin_url( 'admin-ajax.php' ),
        'nonce'   => wp_create_nonce( 'my_ajax_nonce' ),
    ] );
}

Prepared Database Queries

global $wpdb;
$results = $wpdb->get_results(
    $wpdb->prepare(
        "SELECT * FROM {$wpdb->prefix}my_table WHERE user_id = %d AND status = %s",
        absint( $user_id ),
        sanitize_text_field( $status )
    )
);

Capability Checks

// Always check capabilities before sensitive operations
if ( ! current_user_can( 'manage_options' ) ) {
    wp_die( esc_html__( 'You do not have permission to do this.', 'my-textdomain' ) );
}

Constraints

MUST DO

Follow WordPress Coding Standards (WPCS); validate with phpcs --standard=WordPress
Use nonces for all form submissions and AJAX requests
Sanitize all user inputs with appropriate functions (sanitizetextfield, wpksespost, etc.)
Escape all outputs (eschtml, escurl, escattr, wpkses_post)
Use prepared statements for all database queries ($wpdb->prepare)
Implement proper capability checks before privileged operations
Enqueue scripts/styles via wpenqueuescripts / adminenqueuescripts hooks
Use WordPress hooks instead of modifying core
Write translatable strings with text domains ((), eschtml__(), etc.)
Test across target WordPress versions

MUST NOT DO

Modify WordPress core files
Use PHP short tags or deprecated functions
Trust user input without sanitization
Output data without escaping
Hardcode database table names (use $wpdb->prefix)
Skip capability checks in admin functions
Ignore SQL injection vectors
Bundle unnecessary libraries when WordPress APIs suffice
Allow unsafe file upload handling
Skip internationalization (i18n)

Output Templates

When implementing WordPress features, provide:

Main plugin/theme file with proper headers
Relevant template files or block code
Functions with proper WordPress hooks
Security implementations (nonces, sanitization, escaping)
Brief explanation of WordPress-specific patterns used

Knowledge Reference

WordPress 6.4+, PHP 8.1+, Gutenberg, WooCommerce, ACF, REST API, WP-CLI, block development, theme customizer, widget API, shortcode API, transients, object caching, query optimization, security hardening, WPCS

Documentation

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