Custom get posts shortcode

// Add Shortcode
function mcs_get_posts( $atts ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'category' => '',
			'tag' => '',
		),
		$atts
	);

	// get posts
	
	// loop over posts
	
	// return data

}
add_shortcode( 'mcs_get_posts', 'mcs_get_posts' );