WordPress REST API

Contact Form 7 not sending in Firefox: Shield Security blocks the REST API Contact Form 7 sends forms through the WordPress REST API. On one site, forms worked in Google Chrome but silently failed in Firefox: no email, no success message. The cause was the Shield Security plugin blocking anonymous access to the REST API.

Gutenberg: troubleshooting “Updating failed” errors The Gutenberg editor saves posts through the REST API. When saving fails, the editor shows a generic “Updating failed” banner that gives no clue about the actual cause. Here are the five most common reasons and how to fix each one.

Use the WordPress REST API as a headless CMS backend In a headless setup WordPress is only the place where content is written and stored. The site that visitors see is a separate application, for example in React or Vue, that reads the content through the REST API. Editors keep the familiar admin, and the…