Coinbase Builds AI 'Digital Teammate' CEEcil: Remembers Team Context and Proactively Handles Tasks

On August 28, Coinbase disclosed the architecture and application of its internal AI system "CEEcil," which is not a simple chatbot but is designed as an AI agent resembling a "team member." It can be @mentioned in Slack and possesses long-term memory, proactive follow-up, and judgment capabilities. CEEcil currently helps teams handle production incidents and answer expert knowledge that would otherwise take hours to obtain. In the future, the company aims to expand this model into multiple AI agents tailored to specific teams, enabling AI not only to "answer questions" but also to continuously remember, proactively participate, and complete actual work. In practice, CEEcil can proactively join relevant Slack discussions, send emoji reactions, and automatically follow up when issues are left unattended.