---
id: "entity-obsidian"
type: "entity"
entityType: "tool"
canonicalName: "Obsidian"
aliases: []
source_timestamps: ["00:04:50"]
tags: ["tools", "markdown"]
related: ["concept-ai-wiki"]
sources: ["s11-wiki-vs-open-brain"]
sourceVaultSlug: "s11-wiki-vs-open-brain"
originDay: 11
---
# Obsidian

# Obsidian

**Type:** Tool / Markdown PKM application.
**Canonical:** https://obsidian.md/

## Description

A popular markdown-based note-taking application with graph views, popular for local-first personal knowledge management and integration with AI plugins for auto-editing.

## Role in This Source

[[entity-andrej-karpathy-d11]] uses Obsidian as the **visual interface** (the *display*) for his [[concept-ai-wiki]], while the AI agent acts as the backend writer updating the markdown files.

## Why It's Relevant

Obsidian is the canonical embodiment of the [[concept-file-over-app]] principle — open markdown files, locally owned, with a presentation layer that never holds the user's data hostage.