During his fight with The Merovingian's henchmen, Neo blocks a sword with just his hand which seems to surprise everyone. However, a moment later his hand is cut causing The Merovingian to say
"You see he's just a man"
I always assumed this meant that only humans would bleed in The Matrix. This seems supported by the fact that no one else bleeds during the fight.
Later on, Morpheus cuts an Agent's face with his sword causing him to bleed. This got me thinking, are Agents close to humans in terms of their coding?