term_links-{$taxonomy}

The term_links-{$taxonomy} hook in WordPress is used to filter the links for terms within a specified taxonomy. This hook allows developers to modify how term links are displayed, offering flexibility in customizing the output.

The hook name includes a dynamic portion, $taxonomy, which represents the specific taxonomy slug. For example, it can be term_links-category for categories, or term_links-post_tag for tags​. (WordPress Developer Resources)​​.

Possible hook names include:

• term_links-category
• term_links-post_tag
• term_links-post_format

Parameters:

$links string[] – An array of term links.

When using this hook, ensure your modifications align with the site’s navigation and taxonomy structure. Testing changes in a development environment before applying them to a live site is recommended to avoid conflicts or issues

function limit_to_two_tags( $links ) {
    return array_slice( $links, 0, 2, true );
}

add_filter('term_links-post_tag', 'limit_to_two_tags');

This code can be added to your theme’s functions.php file or a custom plugin. It ensures that only the first two tags associated with a post are displayed, helping to maintain a clean and manageable tag list on the frontend.