Developer Resources

The freedom to build. Explore APIs, create blocks, build themes, and author plugins for WordPress.

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Documentation Handbooks

Block Editor Handbook

Dive into the world of plugin authoring

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Plugin Handbook

Create the building blocks of WordPress

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REST API Handbook

Explore APIs in the software and the ecosystem

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Theme Handbook

Learn how to build your own themes

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WP-CLI Commands

A collection of helpful guides and resources for using WP-CLI

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Advanced Administration Handbook

Dig into the technical side of site management

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Common APIs Handbook

Core WordPress APIs and functions

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Coding Standards

WordPress coding standards and best practices

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New and updated in 6.9

See what has changed in the WordPress 6.9 API

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Latest Dev Notes

View All Dev Notes

A better way to test HTML in WordPress with assertEqualHTML()

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From Abilities to AI Agents: Introducing the WordPress MCP Adapter

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Other Developer Resources

WordPress Playground

Test WordPress in your browser

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WP-CLI Commands

Command-line tools for WordPress

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Learn WordPress

Educational resources and tutorials

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Plugins and tools

Essential development tools

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Contribute to WordPress

Start contributing to core. Help document WordPress.

Core Contributor Handbook Documentation Handbook

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