Obsidian AI Assistant

A fully private AI assistant plugin for Obsidian that runs entirely on your machine. Works offline, keeps your data private, and connects to any OpenAI-compatible model.

Features:

• Local AI integration (Ollama, vLLM, llama.cpp, or any OpenAI-compatible endpoint)
• Fully private—no data leaves your vault
• Rich text manipulation: explain, expand, rewrite, summarize, and create notes
• Optional web search grounding via SearXNG for context-aware responses
• Per-note and vault-wide chat history
• Token-by-token streaming UI for real-time responses
• Works on macOS and Linux (desktop only)

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Installation

1. Download the plugin from GitHub Releases

2. Extract to your vault's plugin directory

   • Locate your vault's .obsidian/plugins/ folder
   • Create a new directory: .obsidian/plugins/obsidian-ai-assistant/
   • Copy the following files from the release into that directory:
     • main.js
     • manifest.json
     • styles.css

3. Enable the plugin

   • Open Obsidian and go to Settings → Community plugins → Installed plugins
   • Find Obsidian AI Assistant and toggle it on

Building from Source

If you want to build the plugin yourself:

1. Clone the repository

   git clone https://github.com/SuperSonnix71/obsidian-ai-assistant.git
   cd obsidian-ai-assistant

2. Install dependencies

   npm install

3. Build the plugin

   npm run build

4. Copy the built files to your vault

   mkdir -p /path/to/your/vault/.obsidian/plugins/obsidian-ai-assistant/
   cp main.js manifest.json styles.css /path/to/your/vault/.obsidian/plugins/obsidian-ai-assistant/

5. Reload Obsidian and enable the plugin in Community plugins

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Quick Start

1. Set Up a Local LLM Server

Choose one of the following:

Ollama (Recommended)

# Install from https://ollama.ai
ollama pull llama2
ollama serve

Default: http://localhost:11434

vLLM

python -m vllm.entrypoints.openai.api_server \
  --model meta-llama/Llama-2-7b-hf \
  --port 8000

Access at: http://localhost:8000

llama.cpp Server

./server -m model.gguf -p 8000

Access at: http://localhost:8000

2. Configure the Plugin

1. Open Obsidian and enable the Obsidian AI Assistant plugin
2. Go to Settings → Obsidian AI Assistant
3. Select your provider (Ollama, OpenAI-compatible, etc.)
4. Enter the base URL (e.g., http://localhost:11434 for Ollama)
5. Choose a model from the dropdown (auto-populated for Ollama)
6. Adjust temperature if desired (default: 0.7)

3. Use the Plugin

Selection-based Commands

• Explain selection – Understand selected text
• Expand selection – Add more detail or context
• Rewrite selection – Available styles: Formal, Casual, Active Voice, Bullet Points
• Caption selection – Generate a caption for the selection
• Summarize selection – Condense selected text

Note-based Commands

• Chat (this note) – Persistent conversation with the current note as context

Vault-based Commands

• Search vault for notes – Find notes by title, aliases, headings, tags, or description (clickable wikilinks)
• Research & Create Note – Generate a new note based on web research results

All commands are accessible via:

• Command Palette (Cmd/Ctrl + P)
• Editor context menu (right-click)
• Plugin modal (toggle from ribbon icon or command palette)

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Configuration

Provider Settings

Ollama

• Base URL: http://localhost:11434 (default)
• Model selection: Automatically populated from /api/tags
• Temperature: 0.0 (deterministic) to 1.0 (creative)

OpenAI-Compatible (vLLM, llama.cpp, etc.)

• Base URL: Endpoint of your server (e.g., http://localhost:8000)
• API Key (optional): Some servers may require this
• Model: Manually specify or auto-fetch from /v1/models
• Temperature: Adjustable per request

Web Search Grounding

Enable optional web search to augment AI responses with current information:

1. Enable Web Search in plugin settings
2. Set Search URL Template: Default is SearXNG (https://searx.be/search?q=%s&format=json)
3. Results are injected into the LLM context as quoted, attributed snippets

Recommended: Self-host [SearXNG] for full privacy.

Chat History Retention

Configure how long conversations are kept:

• Per-note max messages: Default 80
• Vault-wide max messages: Default 400
• Max message character limit: 20,000

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Architecture

Core Modules

• Provider Layer (src/providers/) – Normalizes requests across Ollama and OpenAI-compatible servers
• History Layer (src/history/) – Manages per-note and vault-wide chat persistence
• Editor Integration (src/editor/) – Handles text selection, insertion, and replacement
• UI Layer (src/ui/) – Obsidian Modal with React + shadcn/ui components
• Web Search (src/websearch/) – Integrates external search results

Technology Stack

• Obsidian API – Plugin framework
• TypeScript – Type-safe development
• Svelte – UI components
• Tailwind CSS – Styling
• esbuild – Bundling

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Development

Build Commands

• Development mode (watch + rebuild on changes)

  npm run dev

• Production build

  npm run build

• Local deployment (copy to vault)

  ./deploy.sh

• Type checking

  npm run svelte-check

Project Structure

src/
├── main.ts                 # Plugin entry point
├── commands/               # Command definitions and execution
├── editor/                 # Text selection and insertion logic
├── history/                # Chat persistence and retention
├── providers/              # LLM provider integrations
│   ├── ollama.ts          # Ollama API client
│   ├── openai_compatible.ts # OpenAI-compatible servers
│   └── transport/          # HTTP and streaming utilities
├── settings/               # Configuration and defaults
├── types/                  # TypeScript interfaces
├── ui/                     # Obsidian Modal and UI components
│   └── svelte/            # Svelte components
└── websearch/              # Web search integration

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Privacy & Security

• Zero cloud integration – All processing happens locally
• Vault privacy – No data is sent outside your machine
• Open source – Fully auditable code
• Web search – Results are treated as untrusted; prompts explicitly instruct the model to quote and attribute sources

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Troubleshooting

Plugin doesn't connect to Ollama

• Verify Ollama is running: ollama serve (should be at http://localhost:11434)
• Check the plugin settings for correct base URL
• Ensure no firewall is blocking localhost connections

Models aren't loading

• For Ollama: Run ollama pull <model-name> first
• For OpenAI-compatible: Ensure /v1/models endpoint is accessible
• Check browser console (Obsidian → Ctrl+Shift+I) for detailed errors

Web search returns errors

• Verify the search URL is correct and accessible
• Test the URL manually: https://your-searxng/search?q=test&format=json
• Ensure it returns valid JSON

Performance issues

• Reduce Modal Width/Height in settings
• Lower history retention limits if chat slows down
• Consider running a smaller, faster model

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Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch (git checkout -b feature/my-feature)
3. Commit your changes
4. Push to the branch and open a Pull Request

For major changes, please open an issue first to discuss what you'd like to change.

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License

MIT License – See LICENSE for details

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Credits

Built by SuperSonnix71

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Support

• Obsidian Plugin Docs
• GitHub Issues