Solo founder builds AI-readable second brain using Obsidian, Git, and VS Code

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A solo founder and lead architect at NEXT4I has shared a practical knowledge management setup designed to preserve technical context and decisions over time. The system combines Obsidian for linked Markdown notes, Git for version-controlled change history, and VS Code AI agents that can read the vault like a codebase. The three-layer architecture requires no proprietary SaaS tools, no vendor lock-in, and no custom integrations. Notes are organized into folders such as Idea, Infrastructure, Platform, Script, and Skill, with consistent naming conventions that help both humans and AI agents navigate the knowledge base. The author argues that structured folder design effectively acts as an API, enabling AI agents to summarize decisions, detect contradictions, and draft new documents directly from stored context.

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