expose-all-abilities-to-mcp.php

<?php
/**
 * Plugin Name: Expose All Abilities to MCP
 * Plugin URI: https://gist.github.com/westonruter/3a37d35ef66cdd58315a7c1347d92560
 * Description: Forces all registered abilities (wth the Abilities API) to be exposed to AI agents, only when running on a local environment.
 * Requires at least: 6.9
 * Requires PHP: 7.4
 * Version: 1.1.1
 * Author: Weston Ruter
 * Author URI: https://weston.ruter.net/
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * Update URI: false
 * Gist Plugin URI: https://gist.github.com/westonruter/3a37d35ef66cdd58315a7c1347d92560
 * Primary Branch: main
 */

add_filter(
	'wp_register_ability_args',
	static function ( array $args, string $ability_id ): array {
		if (
			// Prevent exposing abilities in MCP except on a local dev environment.
			wp_get_environment_type() === 'local'
			&&
			// Omit abilities which the MCP Adapter already makes available itself.
			! str_starts_with( $ability_id, 'mcp-adapter/' )
		) {
			$args['meta']['mcp']['public'] = true;
		}
		return $args;
	},
	10,
	2
);