Nexus MCP

Features

• Google Calendar Integration

  • Create, read, update, and delete calendar events

  • List upcoming events

• Obsidian Vault Management

  • Create, read, update, and delete notes

  • Full-text search in notes

  • Folder management (create, delete, search, list)

• Trello Integration

  • Board, list, and card management

  • Create, update, and delete cards

  • Search cards by text query

• Web Page Parsing

  • Extract and clean HTML content from any URL

• Google News Search

  • Search for recent news articles on a given topic

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Related MCP server: Daily Briefing MCP Server

Prerequisites

• Python 3.10 or higher

• Poetry (Python package manager)

• Google Calendar API credentials

• Trello API credentials (if using Trello features)

• Obsidian Vault (if using Obsidian features)

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/nexus-mcp.git
   cd nexus-mcp

2. Install dependencies using Poetry:

   poetry install

3. Set up Google Calendar API:

   • Go to the Google Cloud Console

   • Create a new project or select an existing one

   • Enable the Google Calendar API

   • Create OAuth 2.0 credentials

   • Download the credentials and save them as credentials.json in the project root

4. Set up Trello API (optional):

   • Go to Trello Developer Portal

   • Get your API key and token

   • Add them to your environment variables or config file

Configuration

1. Run the initial setup to authenticate with Google Calendar:

   poetry run python main.py

   • This will open a browser window for Google authentication

   • Follow the prompts to authorize the application

Usage

1. Start the server:

   poetry run python main.py

2. The server will start and be ready to accept MCP-compatible client connections.

3. Use any MCP-compatible client to interact with the server. The server provides the following tools:

   • Calendar management

   • Obsidian vault operations

   • Trello board management

   • Web page parsing

Anthropic Claude Desktop Configuration

To use this server with Anthropic Claude Desktop, add the following configuration to your Claude Desktop settings:

{
   "mcpServers": {
      "personal-assistant": {
         "command": "/path/to/your/venv/bin/python",
         "args": ["/path/to/your/project/main.py"],
         "env": {
                 "GOOGLE_CREDENTIALS_PATH": "/path/to/your/credentials.json",
                 "GOOGLE_TOKEN_PATH": "/path/to/your/token.json",
                 "GOOGLE_API_KEY": "your_google_api_key",
                 "GOOGLE_CX_ID": "your_google_cx_id",
                 "OBSIDIAN_VAULT_PATH": "/path/to/your/obsidian/vault",
                 "OBSIDIAN_DEFAULT_FOLDER": "your_default_folder",
                 "TRELLO_API_KEY": "your_trello_api_key",
                 "TRELLO_TOKEN": "your_trello_token",
                 "LOG_PATH": "/path/to/log.txt",
                 "ENABLE_OBSIDIAN_TOOLS": "True/False",
                 "ENABLE_TRELLO_TOOLS": "True/False",
                 "ENABLE_CALENDAR_TOOLS": "True/False",
                 "ENABLE_NEWS_SEARCH": "True/False",
                 "ENABLE_WEB_PARSER": "True/False",
                 "SEMANTIC_SEARCH_ENABLED": "True/False",
                 "EMBEDDINGS_PATH": "/path/to/embeddings.json"
         }
      }
   }
}

Replace the paths and credentials with your actual values:

• command: Path to your Python virtual environment's Python executable

• args: Path to your project's main.py file

• ENABLE_OBSIDIAN_TOOLS: Set to True to enable Obsidian tools

• ENABLE_TRELLO_TOOLS: Set to True to enable Trello tools

• ENABLE_CALENDAR_TOOLS: Set to True to enable Google Calendar tools

• ENABLE_NEWS_SEARCH: Set to True to enable Google News search

• ENABLE_WEB_PARSER: Set to True to enable the web parser tool

• GOOGLE_CREDENTIALS_PATH: Path to your Google Calendar credentials file (credentials.json)

• GOOGLE_TOKEN_PATH: Path to your Google Calendar token file (token.json)

• GOOGLE_API_KEY: Your Google API Key (for Custom Search API)

• GOOGLE_CX_ID: Your Google Programmable Search Engine ID (CX ID for Custom Search API)

• OBSIDIAN_VAULT_PATH: Path to your Obsidian vault

• OBSIDIAN_DEFAULT_FOLDER: Optional path to default folder in your vault where new notes will be created

• TRELLO_API_KEY: Your Trello API key

• TRELLO_TOKEN: Your Trello API token

• LOG_PATH: Path to the log file

• SEMANTIC_SEARCH_ENABLED: Set to True to enable semantic search for Obsidian Vault

• SIMILARITY_TRESHOLD: Default value is 0.5, this is the treshold for the semantic search

• EMBEDDINGS_PATH: Optional path to the embeddings json file generated by the Obsidian Vector Search plugin (defaults to .obsidian/plugins/vector-search/data.json relative to OBSIDIAN_VAULT_PATH if not set)

• MODEL_TOKEN_LIMIT: Limit for the AI model to understand when to chunk the notes

• CHUNK_SIZE_TOKENS: Chunk size

To enable semantic search capabilities, you'll need to install the Vector Search plugin for Obsidian.

After the reindexing process is complete, the plugin will generate a JSON file containing vector embeddings at the following location:

.obsidian/plugins/vector-search/data.json

This file will be used as the embedding source for semantic search queries.

Recommended clients:

• Anthropic Claude Desktop

• 5ire

Development

• The project uses Poetry for dependency management

• All tools are registered in main.py

• Service-specific implementations are in the services/ directory

• Follow PEP 8 style guidelines for Python code

Contributing

1. Fork the repository

2. Create your feature branch (git checkout -b feature/amazing-feature)

3. Commit your changes (git commit -m 'Add some amazing feature')

4. Push to the branch (git push origin feature/amazing-feature)

5. Open a Pull Request