How Two Engineer Side Projects Became Dropbox's File-Organizing Agent
rseroter · x · 2026-11-05
Dropbox engineers Daniel Reiter Horn and Rich Chan ran two side experiments using coding agents beyond software — 3D-printed models, expense reports — and merged them into Dropbox's user-facing agent that organizes folders, renames files, and prepares materials for sharing.
Key engineering decisions:
- Filesystem access + version history: the agent works directly on files while every change is recorded and rollback-capable
- Isolated workspace: the agent runs and installs software in a sandbox, with permission checks outside the workspace governing what it can access and modify
- Human-agent UX: users follow progress, approve access, and review/undo results
The writeup focuses on agent-human interaction design and safeguards around permissions.
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