ACF
Tested by us on 15 October 2026, from ChatGPT and Claude. The overview is on the ACF page.
Tested
Section titled “Tested”Reading and updating an existing text field on a post, through the WordPress REST API.
Before you start
Section titled “Before you start”In ACF, open the field group and switch on Show in REST. Fields in groups without it aren’t reachable.
Limits
Section titled “Limits”- Only text fields are tested. Images, repeaters, relationships and other types come later.
- Creating field groups, post types or taxonomies through ACF’s own abilities isn’t tested. Those abilities are off until a developer enables them in code.