Tobi Lutke shares how Shopify built an AI agent called River that helps employees work and learn together — publicly, on Slack.
The detail that matters: River isn’t private. Employees can only use it in the open, which means every query, every answer, every correction plays out where colleagues can watch. What looks like a productivity tool is actually a cultural one. The agent becomes a teaching workshop — ambient, always on, free to observe.
That’s the real design choice. When knowledge work happens in public, it spreads. A junior employee watches a senior query River, sees the follow-up, absorbs the framing. Skills diffuse sideways through the organisation without anyone scheduling a training session.
Lutke frames this as speed — and it is — but it’s also something older. It’s apprenticeship, scaled. The workshop model, where you learned by watching masters work, translated into a modern Slack channel.
River doesn’t replace people. It makes everyone a more visible learner. And in doing so, it turns ordinary work into a collective resource.
The secret of Shopify’s agent isn’t the AI. It’s the decision to make the AI impossible to use quietly.