{"slug": "how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg", "title": "How the engineer behind Claude Cowork actually uses Claude | Felix Rieseberg (Anthropic)", "summary": "Anthropic engineering lead Felix Rieseberg demonstrated how he uses Claude Cowork to solve real-world problems, including turning 2D floor plans into interactive 3D walkthroughs, automatically tracking promises made on Twitter, and building a $20 hardware device that physically approves Claude actions with a button press. Rieseberg, who previously spent five years at Slack building developer tools, also shared his philosophy of never manually entering data Claude can find itself and explained why he judges Claude's output rather than reading its code. The episode covers practical applications like using email as a personal inventory database and when to use Opus versus Sonnet 4.6 based on problem scoping rather than technical complexity.", "body_md": "**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.\n\n**Listen or watch on YouTube, Spotify, or Apple Podcasts**\n\n### What you’ll learn:\n\nHow to use Claude Cowork to turn a 2D floor plan into an interactive 3D walkthrough where you can move furniture around\n\nThe “go one abstraction layer up” philosophy: why you should never manually enter data Claude can find itself\n\nHow to use your email as an inventory database for furniture, clothing, and personal purchases\n\nWhen to use Opus vs. Sonnet 4.6 (hint: it’s about how well you can scope the problem, not technical complexity)\n\nHow live artifacts work and why they’re powerful for dashboards that refresh with real-time data from your connectors\n\nThe product philosophy behind making latency delightful\n\nHow to build your own $20 hardware device using Claude Code (no hardware experience required)\n\nWhy Felix never reads the code Claude writes and judges it purely on output\n\n### Brought to you by:\n\n** Magic Patterns**—Prototypes that look like your product\n\n** Guru**—The AI layer of truth\n\n### In this episode, we cover:\n\n([00:00](https://www.youtube.com/watch?v=-tdNsYi8AXs)) Introduction to Felix Rieseberg\n\n([02:40](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=160s)) Felix’s role at Anthropic\n\n([03:25](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=205s)) The multiple tabs in Claude and why they exist\n\n([05:55](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=355s)) Using Claude Cowork to design a new house using floor plans\n\n([09:52](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=592s)) When to use Opus versus Sonnet 4.6\n\n([12:37](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=757s)) Building an interactive 3D furniture planner\n\n([14:30](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=870s)) Using your email as a source of truth for personal inventory\n\n([15:58](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=958s)) The anti-to-do list: going one abstraction layer up\n\n([23:14](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=1394s)) Introduction to live artifacts\n\n([26:02](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=1562s)) Building a personal dashboard with live data\n\n([28:37](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=1717s)) Being polite to Claude (and why it matters for your humanity)\n\n([30:28](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=1828s)) Claude interaction tips\n\n([32:33](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=1953s)) Looking at the daily dashboard\n\n([33:55](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2035s)) How live artifacts work with connectors\n\n([35:02](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2102s)) Redesigning the dashboard\n\n([37:55](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2275s)) The biggest gap: people don’t know what problems AI can solve\n\n([41:52](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2512s)) The reverse interview\n\n([42:30](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2550s)) Making latency delightful through asynchronous design\n\n([44:05](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2645s)) The redesigned dashboard\n\n([45:28](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2728s)) AI should free up your creative energy\n\n([46:44](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=2804s)) Building a $20 hardware Claude buddy\n\n([52:33](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=3153s)) Why kids are magical AI users\n\n([54:30](https://www.youtube.com/watch?v=-tdNsYi8AXs&t=3270s)) Recap and final thoughts\n\n### Tools referenced:\n\n• Claude Cowork: [https://www.anthropic.com/product/claude-cowork](https://www.anthropic.com/product/claude-cowork)\n\n• Claude Code: [https://claude.ai/code](https://claude.ai/code)\n\n• Claude for Chrome: [https://code.claude.com/docs/en/chrome](https://code.claude.com/docs/en/chrome)\n\n• Claude Desktop: [https://claude.ai/download](https://claude.ai/download)\n\n• Live Artifacts: [https://support.claude.com/en/articles/14729249-use-live-artifacts-in-claude-cowork](https://support.claude.com/en/articles/14729249-use-live-artifacts-in-claude-cowork)\n\n• Connectors (Spotify, Gmail, Calendar, Notion): [https://claude.ai/settings/connectors](https://claude.ai/settings/connectors)\n\n• Slack: [https://slack.com/](https://slack.com/)\n\n### Where to find Felix Rieseberg:\n\nWebsite: [https://felixrieseberg.com/](https://felixrieseberg.com/)\n\nLinkedIn: [https://www.linkedin.com/in/felixrieseberg/](https://www.linkedin.com/in/felixrieseberg/)\n\nX: [https://x.com/felixrieseberg](https://x.com/felixrieseberg)\n\nGitHub: [https://github.com/felixrieseberg](https://github.com/felixrieseberg)\n\n### Where to find Claire Vo:\n\nChatPRD: [https://www.chatprd.ai/](https://www.chatprd.ai/)\n\nWebsite: [https://clairevo.com/](https://clairevo.com/)\n\nLinkedIn: [https://www.linkedin.com/in/clairevo/](https://www.linkedin.com/in/clairevo/)\n\nProduction and marketing by [https://penname.co/](https://penname.co/). For inquiries about sponsoring the podcast, email [[email protected]](/cdn-cgi/l/email-protection).", "url": "https://wpnews.pro/news/how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg", "canonical_source": "https://www.lennysnewsletter.com/p/how-the-engineer-behind-claude-cowork", "published_at": "2026-05-25 12:03:53+00:00", "updated_at": "2026-05-26 12:11:58.311536+00:00", "lang": "en", "topics": ["ai-tools", "ai-products", "artificial-intelligence", "large-language-models", "ai-agents"], "entities": ["Felix Rieseberg", "Anthropic", "Claude Cowork", "Claude Code Desktop", "Slack", "Magic Patterns", "Guru"], "alternates": {"html": "https://wpnews.pro/news/how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg", "markdown": "https://wpnews.pro/news/how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg.md", "text": "https://wpnews.pro/news/how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg.txt", "jsonld": "https://wpnews.pro/news/how-the-engineer-behind-claude-cowork-actually-uses-claude-felix-rieseberg.jsonld"}}