acf_update_field tool reference for Advanced Custom Fields (ACF)
Writeupdates an ACF field by name or key on a post.
Description
updates an ACF field by name or key on a post.
What it is for
- Filling structured content with AI.
Example use case
updating a hero block field.
Sample prompt
Update the hero_subtitle ACF field for post ID 245 with a clearer benefit-driven message.
Sample response
{
"tool": "acf_update_field",
"status": "ok",
"updated": true
}
What does acf_update_field do?
updates an ACF field by name or key on a post.
Does acf_update_field modify site data?
Yes. It can create, update, activate, deactivate, or delete data depending on arguments.
Which capability is commonly required?
It usually runs with controls compatible with edit_posts and the active MCP profile.
How should acf_update_field be used safely?
Require confirmation, test in staging first, and verify rollback coverage.
Which plugin is required?
Advanced Custom Fields (ACF) must be installed and active in the target WordPress environment.