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Project Type: WordPress Reference

Block Development

Guides for developing custom WordPress blocks. Source: Various block-related files in wp-includes/ Topics Topic Description block-json-schema.md block.json schema and fields attributes.md Block attributes system supports.md Block supports (color, spacing, etc.)...

February 12, 2026 Read More

block.json Schema Reference

The block.json file is the canonical way to register blocks in WordPress. It defines metadata, assets, and behavior for your block. File Location Place block.json in your block's root directory:...

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WordPress AJAX Functions

Core functions for handling AJAX requests and responses. Response Functions wp_send_json() Sends a JSON response and terminates execution. File: wp-includes/functions.php Since: 3.5.0 wp_send_json( mixed $response, int $status_code = null, int...

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WordPress AJAX Hooks

WordPress uses dynamic action hooks to route AJAX requests to handler functions. Primary Action Hooks wp_ajax_{action} Fires for authenticated (logged-in) users. File: wp-admin/admin-ajax.php Since: 2.1.0 do_action( "wp_ajax_{$action}" ); The {action}...

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Application Passwords Overview

Application Passwords provide a secure way to authenticate REST API requests without exposing your main WordPress password. Introduced in WordPress 5.6.0, they enable third-party applications, mobile apps, and automation scripts...

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WP_Application_Passwords Class Reference

WP_Application_Passwords is a static utility class for managing application passwords. All methods are static — no instantiation required. Since: WordPress 5.6.0 File: wp-includes/class-wp-application-passwords.php Class Constants USERMETA_KEY_APPLICATION_PASSWORDS const USERMETA_KEY_APPLICATION_PASSWORDS = '_application_passwords';...

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Application Passwords Hooks

This document covers the action hooks available in the WP_Application_Passwords class for extending and monitoring application password functionality. Actions wp_create_application_password Fires when a new application password is created. do_action( 'wp_create_application_password',...

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Block Bindings API

Framework for connecting block attributes to external data sources, allowing dynamic content override during block rendering. Since: 6.5.0 Source: wp-includes/block-bindings.php, wp-includes/block-bindings/ Components Component Description functions.md Core registration and retrieval functions...

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WP_Block_Bindings_Registry

Singleton registry for managing block bindings sources. Source: wp-includes/class-wp-block-bindings-registry.php Since: 6.5.0 Overview The registry manages all registered block bindings sources. Access via WP_Block_Bindings_Registry::get_instance() or use the wrapper functions in block-bindings.php....

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image-edit.php

Overview Image editor (crop/rotate/scale) helpers used by the media edit UI. Functions wp_image_editor() — WordPress Image Editor wp_stream_image() — Shows the settings in the Image Editor that allow selecting to...

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