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Sierra redesigned Agent Studio around Ghostwriter, its agent for building agents. Ghostwriter now follows you through journeys, simulations, and dashboards and sees what you're looking at. It replaces what was spread across Explorer, Sierra Assistant, and other specialized agents. Work happens in chat-style sessions that hold Ghostwriter's changes until someone reviews and merges them, and sessions can be shared or forked. Related agents can now sit in one project with shared data and channels. Changes get line-by-line diffs, Preview Chat and Simulations, plus release governance with required approvals and controlled rollouts.
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