Ryan is the VP of Product at Mercury, my favorite fintech product. We covered three things that’s on every AI builder’s mind — how to build a Claude Code second brain, how to make your product agent-ready with APIs and MCPs, and what Mercury’s data reveals about OpenAI and Anthropic’s race for the enterprise. Ryan and I talked about: (00:00) Why APIs and MCPs are the primary interface (04:40) How to get your product agent ready (07:51) Will MCPs cannibalize your app DAU? (10:36) How to decide between MCPs and CLIs (13:10) Inside Ryan's Claude Code second brain (18:40) Getting AI to coach you after every meeting (20:46) Mercury data: Are startups switching to Anthropic? (23:05) The product development process will never be the same Thanks to our sponsors: Wispr Flow: Don't type, just speak https://ref.wisprflow.ai/peteryang Linear: The AI agent platform for modern teams https://linear.app/behind-the-craft Granola: The AI meeting notes app that saves you hours. https://granola.ai/peter Get the takeaways: https://creatoreconomy.so/p/how-to-build-for-ai-agents-and-a-claude-code-second-brain Where to find Ryan: X: https://x.com/rywiggs Website: https://mercury.com Subscribe to this channel - more interviews coming soon!