In Dutch, there's a specific phrase / idiom you can use when posting a job opening to indicate that it's not appreciated if recruitment agencies offer to find a candidate for you ("Acquisitie naar aanleiding van deze vacature wordt niet op prijs gesteld."); i.e. you only want direct applications.
Is there a similar phrase or idiom for this in English? The automated, literal translation doesn't seem quite right, nor can I think of- or find a phrase for this.