wp-abilities-api

WP Abilities API

When to use

Use this skill when the task involves:

• registering abilities or ability categories in PHP,
• exposing abilities to clients via REST (wp-abilities/v1),
• consuming abilities in JS (notably @wordpress/abilities),
• diagnosing “ability doesn’t show up” / “client can’t see ability” / “REST returns empty”.

Inputs required

• Repo root (run wp-project-triage first if you haven’t).
• Target WordPress version(s) and whether this is WP core or a plugin/theme.
• Where the change should live (plugin vs theme vs mu-plugin).

Procedure

1) Confirm availability and version constraints

• If this is WP core work, check signals.isWpCoreCheckout and versions.wordpress.core.
• If the project targets WP < 6.9, you may need the Abilities API plugin/package rather than relying on core.

2) Find existing Abilities usage

Search for these in the repo:

• wp_register_ability(
• wp_register_ability_category(
• wp_abilities_api_init
• wp_abilities_api_categories_init
• wp-abilities/v1
• @wordpress/abilities

If none exist, decide whether you’re introducing Abilities API fresh (new registrations + client consumption) or only consuming.

3) Register categories (optional)

If you need a logical grouping, register an ability category early (see references/php-registration.md).

4) Register abilities (PHP)

Implement the ability in PHP registration with:

• stable id (namespaced),
• label/description,
• category,
• meta:
  • add readonly: true when the ability is informational,
  • set show_in_rest: true for abilities you want visible to clients.

Use the documented init hooks for Abilities API registration so they load at the right time (see references/php-registration.md).

5) Confirm REST exposure

• Verify the REST endpoints exist and return expected results (see references/rest-api.md).
• If the client still can’t see the ability, confirm meta.show_in_rest is enabled and you’re querying the right endpoint.