Create Custom Taxonomy Term is a WordPress ability from Advanced Custom Fields — usable via Easy MCP AI, which connects Claude, ChatGPT, and any AI assistant to your site.
Install Free Plugin →Create Custom Taxonomy Term
WriteCreate a new term in a specific AI-accessible ACF custom taxonomy.
Requires Advanced Custom Fields (ACF) 6.8.0+ on a WordPress install where the Abilities API is available (native from WordPress 6.9, or via a compatible Abilities/Feature API polyfill). ACF's global 'Allow AI Access' setting (enable_acf_ai) must be turned on, and each individual field group, custom post type, or custom taxonomy must also have its own 'Allow AI Access' toggle enabled and be exposed in the REST API (show_in_rest) before its abilities are registered. Most abilities additionally require the current user to hold ACF's configured management capability (acf_get_setting('capability'), default manage_options) or the matching WordPress post-type/taxonomy capability (create_posts, edit_posts, delete_posts, manage_terms, edit_terms, delete_terms).
What it does
ACF dynamically registers one of these create abilities for every eligible custom taxonomy — the ability ID follows the pattern acf/create-{taxonomy-slug} (e.g. acf/create-genre). It proxies a POST request to that taxonomy's WordPress REST API endpoint, so the new term, and any AI-accessible ACF field values submitted under an 'acf' object, are validated and saved exactly as the standard editor would. A parent field is only available for hierarchical taxonomies.
See it in action
You ask your AI assistant
"Create a new Genre term called "Science Fiction"."
Inputs
| Name | Type | Required | Description |
|---|---|---|---|
| name | string | Yes | The name of the term. |
| description | string | No | The description of the term. |
| slug | string | No | The slug of the term (auto-generated from name if not provided). |
| parent | integer | No | Parent term ID. Only available for hierarchical taxonomies; 0 or omitted means a top-level term. |
| acf | object | No | Values for any AI-accessible ACF fields attached to this taxonomy. |
Returns
The newly created term in the taxonomy's WordPress REST API term schema, including any ACF field values that were set.
Permission
The current user must have the taxonomy's 'manage_terms' capability.
More Advanced Custom Fields abilities
ACF Custom Post Types
List all ACF-registered custom post types that AI is allowed to access.
ACF Custom Taxonomies
List all ACF-registered custom taxonomies that AI is allowed to access.
Create Custom Post Type Item
Create a new item in a specific AI-accessible ACF custom post type.
Delete Custom Post Type Item
Delete an item from a specific AI-accessible ACF custom post type by ID.
Delete Custom Taxonomy Term
Delete a term from a specific AI-accessible ACF custom taxonomy by ID.
List ACF Field Groups
Retrieve every ACF field group that currently has AI access enabled.