Claude Code + Obsidian: Turn AI Conversations into a Persistent Knowledge Base

"Which chat was that design decision in?" 2 AM. Claude hit its limit. The authentication design was coming together nicely — JWT middleware, token rotation, the whole thing — and then the session cut off mid-thought. I switched to Gemini. "So this project uses JWT auth, and the middleware is structured like..." Back to square one. Next day, back to Claude. Yesterday's Gemini conversation? Gone. Explain everything again. Third time. I tried Notion. Logged design decisions, tech choices, remaining tasks. Lasted three days. Day four, deep in implementation, forgot to update it. A week later, opened Notion — everything was stale. Closed it. AI is brilliant. But conversations evaporate. Manual note-taking doesn't stick because humans don't stick with it. What I needed was a system that accumulates knowledge automatically . This article shows how I built that with Claude Code + Obsidian. Try PureMark — zero-click developer tools built entirely in this environment. What This Setup Achieves Cl