Recipe triggers are recipe options which do not display in the recipe GUI item. They dictate actions which are performed when the recipe is used by a player. Currently, there is no default triggers but you can add some using an addon.
<code>
recipes:
    steel-sword:
        ....
        triggers:
        - 'exp smithing 5'
</code>

The only crafting trigger available right now is the experience trigger from [[https://github.com/Indyuce/mmocore/wiki/MMOItems-Compatibility|MMOCore]].