In the Web Novel, the Thieves’s Guild have been aware of Eight Fingers and their operations. However even the guild saw them as dangerous and refrained from interfering. However they still collected information on its operations, backer and executives.
The Thieves’s Guild seems rather focused on collecting and gathering intelligence.
- In the Web Novel, Blue Roses received information concerning Eight Fingers and its operations from the Thieves Guild. Since the guild investigated the group beforehand the adventurers got the information for a fairly cheap price.