Learn how to create custom REST API endpoints in WordPress using register_rest_route, permission_callback, args validation, sanitization, and nonce security. Includes a working JavaScript fetch client using wpApiSettings nonce, WP_Error responses, JSON Schema, rate limiting, and CORS headers for production-ready WordPress API development.
Learn to set up headless WordPress with Next.js 15 App Router in 2026. Covers REST API, WPGraphQL, ISR, on-demand revalidation via webhook, draft preview mode, next/image for media, JWT authentication, and deployment to Vercel or Railway. Every step includes working code.
Learn to register a custom post type in WordPress using register_post_type with REST API support, custom taxonomy, theme templates, and Gutenberg editor. No plugin needed.
<p>When decoupling WordPress from its frontend makes sense, WPGraphQL vs REST API, authentication, preview mode, ISR, Vercel deployment, SEO considerations, and the plugin-compatibility trade-offs nobody tells you about upfront.</p>
Learn how to use the WordPress REST API from scratch. This hands-on tutorial covers default endpoints, authentication with Application Passwords and JWT, building custom endpoints with register_rest_route(), permission callbacks, input validation, error handling, and testing with curl and Postman.
Choosing between API keys, JWT, and OAuth for WordPress REST API authentication? This developer guide compares all three approaches across security, complexity, and use case fit — with practical implementation guidance for each.