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<?php |
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/** |
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* Helper trait for WordPress abilities providing MCP-related utilities. |
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* |
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* @package McpAdapter |
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*/ |
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|
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declare( strict_types=1 ); |
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|
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namespace WP\MCP\Abilities; |
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|
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use WP_Error; |
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|
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/** |
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* Trait McpAbilityHelperTrait |
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* |
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* Provides helper methods for MCP abilities including MCP exposure checking and metadata handling. |
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*/ |
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trait McpAbilityHelperTrait { |
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|
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/** |
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* Checks if ability is publicly exposed via MCP. |
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* |
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* Validates against the ability's mcp.public metadata flag. |
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* Only abilities with mcp.public=true are accessible via default MCP server. |
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* |
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* @param string $ability_name The ability name to check. |
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* |
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* @return bool|\WP_Error True if publicly exposed, WP_Error if not. |
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*/ |
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protected static function check_ability_mcp_exposure( string $ability_name ) { |
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$ability = wp_get_ability( $ability_name ); |
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|
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if ( ! $ability ) { |
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return new WP_Error( 'ability_not_found', "Ability '{$ability_name}' not found" ); |
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} |
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|
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$meta = $ability->get_meta(); |
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$is_public_mcp = $meta['mcp']['public'] ?? false; |
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|
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if ( ! $is_public_mcp ) { |
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return new WP_Error( |
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'ability_not_public_mcp', |
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sprintf( 'Ability "%s" is not exposed via MCP (mcp.public!=true)', $ability_name ) |
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); |
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} |
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|
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return true; |
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} |
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|
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/** |
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* Checks if ability is publicly exposed via MCP (simple boolean version). |
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* |
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* This is a simplified version that returns only boolean values, |
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* useful for filtering operations where WP_Error handling isn't needed. |
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* |
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* @param \WP_Ability $ability The ability object to check. |
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* |
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* @return bool True if publicly exposed, false otherwise. |
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*/ |
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protected static function is_ability_mcp_public( \WP_Ability $ability ): bool { |
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$meta = $ability->get_meta(); |
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|
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return (bool) ( $meta['mcp']['public'] ?? false ); |
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} |
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|
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/** |
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* Gets the MCP type of an ability. |
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* |
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* Returns the type specified in meta.mcp.type, defaulting to 'tool' if not specified. |
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* |
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* @param \WP_Ability $ability The ability object to check. |
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* |
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* @return string The MCP type ('tool', 'resource', or 'prompt'). Defaults to 'tool'. |
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*/ |
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protected static function get_ability_mcp_type( \WP_Ability $ability ): string { |
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$meta = $ability->get_meta(); |
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$type = $meta['mcp']['type'] ?? 'tool'; |
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|
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// Validate type is one of the allowed values |
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if ( ! in_array( $type, array( 'tool', 'resource', 'prompt' ), true ) ) { |
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return 'tool'; |
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} |
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|
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return $type; |
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} |
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} |
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|
