mehl.mx/themes/hugo-mastodon-comments/static/comments/config.sample.php

<?php
$config = [
    'mastodon-instance' => 'https://mastodon.social',  // URL of your Mastodon instance
    'user-id' => 379833,      // Your Mastodon-ID. A bit tricky to find out, the API might help
    // the URL of your blog. All toots are searched for this string
    // please use https?:// as schema
    'search-url' => 'https?://fsfe.org',
    'cache_toots' => 300,     // seconds to cache toots
    'cache_comments' => 300,  // seconds to cache comments (per ID)
    'debug' => false          // writes some debug messages in error_log
];