Felix Rieseberg is the engineering lead for Claude Cowork and Claude Code Desktop at Anthropic. He previously spent five years at Slack building developer tools. In this episode, Felix demonstrates how he uses Claude to solve real-life problems: analyzing floor plans to build interactive 3D house walkthroughs, automatically tracking promises he makes on Twitter, and building a $20 hardware device that physically approves Claude actions with a button press.

What you’ll learn:

How to use Claude Cowork to turn a 2D floor plan into an interactive 3D walkthrough where you can move furniture around
The “go one abstraction layer up” philosophy: why you should never manually enter data Claude can find itself
How to use your email as an inventory database for furniture, clothing, and personal purchases
When to use Opus vs. Sonnet 4.6 (hint: it’s about how well you can scope the problem, not technical complexity)
How live artifacts work and why they’re powerful for dashboards that refresh with real-time data from your connectors
The product philosophy behind making latency delightful
How to build your own $20 hardware device using Claude Code (no hardware experience required)
Why Felix never reads the code Claude writes and judges it purely on output