AI Second Brain Assistant
AI second brain as a personal assistant
An LLM-maintained markdown wiki turned scattered notes and sources into a personal intelligent assistant - searchable concepts, not chat history archaeology.
- Challenge
- Useful context lived across chats, bookmarks, and notes. Re-finding decisions and source material cost time every week, and chat threads were a poor long-term knowledge store.
- Intervention
- Built a personal second brain as an LLM markdown wiki - immutable raw sources, model-owned concept pages, and a schema so the assistant maintains links and an index instead of dumping answers into chat.
- Measurement
- Compared time-to-answer for recurring questions (prior decisions, entity facts, linked sources) before and after the wiki was in daily use.
- Result
- Answers came from linked wiki pages with citations back to sources, not from scrolling old conversations. Knowledge compounding replaced one-off chat retrieval.
- Next step
- Documented the pattern so similar second-brain setups can be reused for delivery leads and small specialist teams.
- Wiki
- Knowledge shape
- Sources
- Ground truth layer
- Daily
- Assistant habit
Results depend on workflow, role, baseline and measurement method.
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