On some jobs clients have preffered to work with a freelancer. In this case the agency contractors also considered as feelancer?
Should agency cotractor bid on thise project or not?
If a client prefers an individual freelancer, then they'd usually indicate this.
If you're associated with an agency you can still apply, but just know that there's a chance the client won't take your application into consideration.
Some clients don't like the process of using agency workers because of the process.