From Exalted - Unofficial Wiki
Just some quick notes to start with:
This is stunt canonical
Original form: giant black pearl - serves as Autobot's link to creation, monitoring device, beacon so he knows whear creation is, etc.
Current Form: giant black Pearl in a gimbaled rig - allows the user to tap into autobot's link to the pattern spiders and use alchemical protocols. If using an unknown protocol make an essence+occult roll to get it to work. protocols made using this item can have giant areas of effect. still serves as auto's link to creation but imperfectly.
Awakened Form: can be used to sync autobot with creation to fully return him to life, if repaired back to it's orgininal functionality and re-synced with creation.