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+---
+visibility: public
+---
+
+# Obsidian
+
+local-first markdown knowledge base. primary thinking and note-taking tool.
+
+**installed via:** `brew install --cask obsidian`
+
+**role:** the main knowledge base. notes, ideas, project docs, daily logs — all stored as plain markdown files on disk. the local-first approach means everything is accessible to CLI tools, scripts, and AI agents that can read the filesystem.
+
+**why Obsidian over alternatives:** markdown files on disk. no vendor lock-in, no proprietary format. the vault is just a folder — [[Claude Code]], grep, and any editor can read it. this is a genuine advantage over [[Notion]] or cloud-based tools: your AI agent has direct filesystem access to your entire knowledge base.
+
+**complements:** [[Ideaflow]] for freeform idea capture, Apple Notes for quick capture, Google Docs for collaboration.
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