Obsidi-Claude

Chat with Claude AI using the Agent SDK directly in Obsidian.

Features

• Full Agent SDK Integration - Access Claude Code's capabilities directly in Obsidian
• Tool Usage - Claude can read/write files, run commands, search the web
• Streaming Responses - Real-time streaming of Claude's responses
• Session Management - Conversations persist and can be resumed
• Configurable - Control which tools Claude can use, permission modes, and more

Requirements

• Claude Code CLI installed and authenticated
• Obsidian Desktop (not mobile - uses Node.js features)
• Node.js 18+

Installation

Development

# Clone the repo
git clone <repo-url>
cd obsidi-claude

# Install dependencies
npm install

# Build
npm run build

# For development with auto-rebuild
npm run dev

Linking to Obsidian

Create a symlink from your Obsidian vault's plugins folder:

ln -sfn /path/to/obsidi-claude /path/to/vault/.obsidian/plugins/obsidi-claude

Usage

1. Enable the plugin in Obsidian Settings > Community Plugins
2. Click the message icon in the ribbon, or run "Open Claude Chat" command
3. Type your message and press Enter (or click Send)

Configuration

Open Settings > Obsidi-Claude to configure:

• Model: Choose Claude Sonnet 4.5, Opus 4, or 3.5 Sonnet
• Working Directory: Where Claude operates (defaults to vault root)
• Permission Mode:
  • Default: Ask for confirmation before sensitive operations
  • Accept Edits: Auto-approve file changes
  • Bypass: No confirmations (use with caution)
• Max Turns: Limit conversation turns
• Show Tool Calls: Display when Claude uses tools
• Allowed Tools: Enable/disable specific tools

Tools Available

When enabled, Claude can use:

• Read: Read file contents
• Write: Create new files
• Edit: Modify existing files
• Glob: Find files by pattern
• Grep: Search file contents
• Bash: Run shell commands
• WebFetch: Fetch web pages
• WebSearch: Search the web

Architecture

Obsidian Plugin
    └── @anthropic-ai/claude-agent-sdk
            └── Claude Code CLI (subprocess)
                    └── Claude API

The plugin uses the official Claude Agent SDK which spawns Claude Code as a subprocess. This provides full access to Claude Code's capabilities including file operations, shell commands, and web access.

Backend Selection

The plugin supports two backends: SDK (full Claude Code features) and API (direct Anthropic API).

┌───────────────────┐
│ preferredBackend? ├─────┬────────┐
└─────────┬─────────┘     └────────┼──────────────────────┐
          │                        │                      │
          ▼                        ▼                      ▼
┌───────────────────┐     ┌────────────────┐        ┌───────────┐
│       'sdk'       │     │     'api'      │        │   'auto'  │
└─────────┬─────────┘     └────────┬───────┘        └─────┬─────┘
          │                        │                      │
          ▼                        ▼                      ▼
┌───────────────────┐     ┌────────────────┐        ┌───────────┐
│   SDK available?  ├─no─►│  API Backend   │◄mobile─┤ Platform? │
└─────────┬─────────┘     └────────────────┘        └─────┬─────┘
          │                        ▲                      │
         yes                      no                   desktop
          │                        │                      │
          ▼                        │                      ▼
┌───────────────────┐     ┌────────┴───────┐              │
│    SDK Backend    │◄yes─┤ SDK available? │◄─────────────┘
└───────────────────┘     └────────────────┘

Backend	Features	Platform
SDK	Full Claude Code: tools, sessions, MCP servers	Desktop only
API	Direct Anthropic API: lighter, mobile-compatible	All platforms

Troubleshooting

"Claude Code not found"

Ensure Claude Code CLI is installed and in your PATH:

claude --version

If not installed, visit code.claude.com for installation instructions.

Plugin not loading

Check Obsidian's developer console (Cmd+Option+I) for errors. Common issues:

• Node.js version too old (need 18+)
• Claude Code not authenticated (run claude login)

License

MIT