WordPress 6.9, scheduled for release on December 2, 2025, is shipping with a new Abilities API that introduces a new system designed to make advanced AI-driven functionality possible for themes and plugins. The new Abilities API will standardize how plugins, themes, and core describe what they can do in a format that humans and machines can understand.
This positions WordPress sites to be understood and used more reliably by AI agents and automation tools, since the Abilities API provides the structured information those systems need to interact with site functionality in a predictable way.
The Abilities API is designed to address a long-standing issue in WordPress: functionality has been scattered across custom functions, AJAX handlers, and plugin-specific implementations. According to WordPress, the purpose of the API is to provide a common way for WordPress core, plugins, and themes to describe what they can do in a standardized, machine-readable form.
This approach enables discoverability, clear validation, and predictable execution wherever an ability originates. By centralizing the description and exposure of capabilities, the Abilities API provides a centralized way to describe functionality that might otherwise be scattered across different implementations.
What An Ability Is
The announcement defines an “ability” as a self-contained unit of functionality that includes its inputs, outputs, permissions, and execution logic. This structure allows abilities to be managed as separate pieces of functionality rather than fragments buried in theme or plugin code. WordPress explains that registering abilities through the API lets developers define permission checks, execution callbacks, and validation requirements, ensuring predictable behavior wherever the ability is used. By replacing isolated functions with defined units, WordPress creates a clearer and more open system for interacting with its features.
What Developers Gain From Abilities API
Developers gain several advantages by registering functionality as abilities. According to the announcement, abilities become discoverable through standardized interfaces, which means they can be queried, listed, and inspected across different contexts. Developers can organize them into categories, validate inputs and outputs, and apply permission rules that define who or what can execute them. The announcement notes that one benefit is automatic exposure through REST API endpoints under the wp-abilities/v1 namespace. This setup shifts WordPress from custom-coded actions to a system where functionality is defined in a consistent and reachable way.
Abilities Best Practices
One of the frustrating paint points for WordPress users is when a plugin or theme conflicts with another one. This happens for a variety of reasons but in the case of the Abilities API, WordPress has created a set of rules that should help prevent conflicts and errors.
WordPress explains the practices:
Ability names should…
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