Build a Second Brain in Obsidian and Codex

Turn Obsidian into an AI-powered second brain you can query from Codex, Claude Code, or your coding agent of choice. In this video I show how to set up an Obsidian vault, use the LLM Wiki pattern, pull in YouTube transcripts and web pages, then ask Codex to turn everything into linked notes, topics, sources, and a searchable knowledge base. Links mentioned: Obsidian: https://obsidian.md LLM Wiki: https://gist.github.com/karpathy/442a... Obsidian Web Clipper: https://obsidian.md/clipper ScriptiKit: https://scripti.ai/scriptikit My Links: Build real AI apps with us: https://www.skool.com/luke Find your launch mate: https://launchm8.io Don't type: https://idonttype.com AI to help you post on YT: https://scripti.ai Raw tech news with no tracking: https://techl8.com Chapters: 0:00 Build an AI second brain in Obsidian 1:34 LLM Wiki vs RAG 3:18 Using YouTube transcripts as source material 4:57 Set up an Obsidian vault 6:19 Add the LLM Wiki prompt to Codex 7:19 Choose the scope of your second brain 9:06 Ingest transcripts and query themes 9:37 Save web pages with Obsidian Web Clipper 10:38 Pull YouTube transcripts with Scripti 12:31 Final ingest and recap Contact: [email protected]