Cole Medin

Full Guide - Build Your Own AI Second Brain with Claude Code

For the past few months I've been building something that completely changed how I work - an AI second brain that knows my schedule, my projects, my preferences, and anticipates my needs better and better over time. It checks my email, calendar, and tasks every 30 minutes, drafts replies in my voice, searches through months of context to answer questions, and I can talk to it through Slack from my phone. And here's the thing - it's all built on top of Claude Code and the Claude Agent SDK. No massive framework, no complicated infrastructure. Just markdown files, Python scripts, and an Obsidian vault. In this video I'll show you exactly how it works, walk through the architecture, and explain the key decisions that make it incredibly useful. If you want to go deeper and build your own, I'm running a full 4-hour hands-on workshop in the Dynamous community this week where I walk you through building this from scratch (link below). ~~~~~~~~~~~~~~~~~~~~~~~~~~ - If you're interested in building your own AI second brain to save yourself hours every week, check out the Dynamous community and upcoming 4 hour second brain workshop: https://dynamous.ai/second-brain-bootcamp - I'm doing a livestream showing how I use my second brain for agentic coding! https://youtube.com/live/hdCZUNQ40VY - My second brain starter repo (includes the diagram from this video!): https://github.com/coleam00/second-brain-starter ~~~~~~~~~~~~~~~~~~~~~~~~~~ 0:00 Introduction the AI Second Brain 3:21 Why Build Your Own Second Brain? 8:58 Architecture Overview 9:41 The Memory Layer 11:48 Daily Reflection & Memory Search 13:48 Skills and Integrations 17:17 Proactive Agent Heartbeat 19:01 Getting Started with Templates 22:15 Live PRD Creation Demo 24:45 Workshop & Wrap-Up ~~~~~~~~~~~~~~~~~~~~~~~~~~ Join me as I push the limits of what is possible with AI. I'll be uploading videos weekly - at least every Wednesday at 7:00 PM CDT!