water/server/app/miniapi/service/SmsSender.php

<?php

declare(strict_types=1);

namespace app\miniapi\service;

/** Delivery channel for login codes. Implementations must not leak provider credentials. */
interface SmsSender
{
    /** @throws \app\miniapi\exception\ApiException when the message could not be accepted. */
    public function send(string $phone, string $content): void;
}