What is Claudian?

Claudian is an Obsidian community plugin that embeds state-of-the-art AI coding agents — Claude Code, Codex, and Opencode — directly into your vault. Instead of switching between your note-taking app and a terminal, your vault becomes the AI’s working directory.

Key Capabilities

1. Your Vault as a Working Directory

When you open a Claudian chat, the AI has full context: it can read and write your vault files, run terminal commands, and execute multi-step workflows — all without leaving Obsidian.

2. Inline Editing

Select any text in a note, press the Claudian hotkey, and describe your change. The AI shows a word-level diff so you can accept, reject, or refine each modification.

// Before
The project uses a monolithic architecture.

// After (Claude suggestion)
The project follows a microservices architecture with independent deployable units.

3. Multi-Provider Support

Claudian works with three leading AI coding tools:

Provider	Status	Notes
Claude Code	Full Support	All features, MCP management
Codex	Supported	Plan mode, inline edit, $ skills
Opencode	Supported	Native integration, expanding

Why Obsidian + AI?

Obsidian’s local-first, markdown-based structure makes it ideal for AI integration:

Zero data lock-in — your notes are plain markdown files
Context-rich — the AI can reference your entire knowledge base
Developer-friendly — vault = project directory

Getting Started

Install Claudian via the latest GitHub Release and follow the quick-start guide in the docs.