Building Aidian: An Obsidian Plugin Powered by Gemini AI

The Vision Behind Aidian

As note-takers and knowledge workers, we've all wished for an AI assistant that could help us with our note-taking process, provide insights, and help organize our thoughts. That's exactly what we set out to build with Aidian - an Obsidian plugin that leverages Google's Gemini AI to provide intelligent chat assistance right in your notes.

"The goal was to create an AI assistant that feels like a natural part of your note-taking workflow, providing context-aware assistance without disrupting your writing experience."

Core Architecture

Aidian is built on a modular architecture that seamlessly integrates with Obsidian while providing powerful AI capabilities:

graph TD
    A[Obsidian Plugin] --> B[Main Plugin Class]
    B --> C[Chat View]
    B --> D[Settings Tab]
    
    C --> E[Chat Interface]
    C --> F[Message History]
    C --> G[Model Selection]
    
    E --> H[Send Message]
    E --> I[Clear Chat]
    
    H --> J[Gemini API Client]
    J --> K[API Request]
    K --> L[Response Handler]
    L --> M[Message Display]
    
    D --> N[API Key Management]
    D --> O[API Version Selection]
    D --> P[Model Configuration]
                        

AI Integration and Features

The heart of Aidian lies in its AI integration, which provides powerful capabilities while maintaining a simple and intuitive interface:

API Version Support

One of Aidian's standout features is its support for multiple Gemini API versions:

• v1 (stable) for reliable, production-ready features
• v1beta for access to the latest Gemini capabilities
• Seamless version switching through settings
• Version-specific model support

Model Selection

Users can choose between different Gemini models based on their needs:

• Gemini Pro for general note-taking assistance
• Gemini Ultra for more complex tasks
• Dynamic model loading based on context
• Version-specific model availability

Security and Data Management

Security is a top priority in Aidian's design, especially when dealing with API keys and user data:

graph TD
    A[API Key Input] -->|Encrypt| B[Secure Storage]
    B -->|Decrypt| C[API Requests]
    C -->|Success| D[Process Response]
    C -->|Error| E[Handle Error]
    B -->|Never Exposed| F[UI/Logs]
                        

Future Enhancements

We're constantly working on improving Aidian with new features and capabilities: