Every bot owner must contact the MusicBrainz team when creating a bot editor, so that its user type can be set to Bot. This will let voters know that the edits are entered by a bot. Do not run any edits with your bot until the Bot type is set.
There is a recommended limit of 2000 open edits and a hard limit of 2500 open edits per bot at the same time. Any bot which goes over the hard limit will be blocked.
Bots shouldn't make more than 1000 edits (be it normal edits or autoedits) per day - that allows users that want to check them all to do so.