OpenGathyr

An open-source Model Context Protocol (MCP) server powered by RSS feeds.

What is OpenGathyr?

OpenGathyr transforms how you manage content feeds by providing a centralized hub that collects, processes, and distributes RSS/Atom feeds. Unlike traditional aggregators, OpenGathyr functions as a complete Model Context Protocol (MCP) server for your feed ecosystem.

Key Features

• MCP Tools Integration: Expose RSS feed functionality through standardized Model Context Protocol tools
• Automated Feed Refreshing: Configurable periodic fetching of RSS feeds to ensure fresh content
• Content Search: Search across all RSS feeds with a unified query interface
• Feed Management: Add, remove, and list RSS feeds dynamically
• Environment Configuration: Easy setup using environment variables for feed sources and settings
• Docker Ready: Containerized deployment support for both local and production environments
• Modular Architecture: Cleanly separated components for easier maintenance and extensibility

Getting Started

Prerequisites

• Node.js 22.x or higher
• npm 7.x or higher
• Docker (optional, for containerized deployment)

Installation

1. Clone the repository:

git clone https://github.com/yourusername/opengathyr.git
cd opengathyr

2. Install dependencies:

npm install

3. Create a .env file with your configuration (see Configuration section)

4. Build the project:

npm run build

5. Start the server:

npm start

For development with auto-reload:

npm run dev

Docker Deployment

To run the server in a Docker container:

# Build the Docker image
docker build -t opengathyr .

# Run the container
docker run -it opengathyr

Configuration

The server can be configured using environment variables:

• MCP_SERVER_NAME: Name of the MCP server
• MCP_SERVER_VERSION: Version of the MCP server
• RSS_FEED_URL_1, RSS_FEED_URL_2, etc.: Individual RSS feed URLs (one URL per variable)
• RSS_REFRESH_INTERVAL: Refresh interval in milliseconds (default: 300000 = 5 minutes)
• RSS_MAX_ITEMS: Maximum number of items to keep per feed (default: 20)

Example .env file

MCP_SERVER_NAME=opengathyr
MCP_SERVER_VERSION=1.0.0

# RSS Feed URLs - one per line
RSS_FEED_URL_1=https://news.google.com/rss
RSS_FEED_URL_2=https://example.com/feed.xml
RSS_FEED_URL_3=https://another-site.org/rss

RSS_REFRESH_INTERVAL=300000
RSS_MAX_ITEMS=20

Available MCP Tools

get-feed

Retrieves the content from a specific feed.

Parameters:

• feedName: Name of the feed to retrieve

search-feeds

Searches across all configured feeds for matching content.

Parameters:

• query: Search term to look for in feed titles and content

list-feeds

Lists all currently configured feeds and their details.

Parameters: None

add-feed

Adds a new RSS feed to be monitored.

Parameters:

• name: Identifier for the feed
• url: URL of the RSS feed
• refreshInterval (optional): Refresh interval in milliseconds
• maxItems (optional): Maximum number of items to keep

remove-feed

Removes an RSS feed from monitoring.

Parameters:

• feedName: Name of the feed to remove

Using the MCP Client

OpenGathyr includes a simple MCP client (src/client/mcp-client.ts) that can be used to interact with the MCP server for testing purposes.

Running the Client

Ensure the MCP server is not already running on the same port, then execute the client with:

npm run client

How It Works

The client:

1. Spawns a new instance of the MCP server as a child process
2. Sends a request to the list-feeds tool
3. Displays the formatted response
4. Automatically terminates the server after receiving the response

Modifying the Client

You can easily modify the client to test other MCP tools:

// Change the request to use a different tool
const request = {
  jsonrpc: '2.0',
  id: 1,
  method: 'tool',
  params: {
    name: 'get-feed',  // Change to any of the available tools
    params: {
      feedName: 'example-feed'  // Add required parameters for the tool
    }
  }
};

Available tools you can test:

• list-feeds: Lists all configured feeds (no parameters needed)
• get-feed: Gets content from a specific feed (requires feedName parameter)
• search-feeds: Searches across feeds (requires query parameter)
• add-feed: Adds a new feed (requires name and url parameters)
• remove-feed: Removes a feed (requires feedName parameter)

Example for searching feeds:

const request = {
  jsonrpc: '2.0',
  id: 1,
  method: 'tool',
  params: {
    name: 'search-feeds',
    params: {
      query: 'technology'
    }
  }
};

Use Cases

• AI Assistants: Integrate with LLM assistants via the Model Context Protocol to provide current news and information
• Content Aggregation: Centralize multiple RSS feeds into a single accessible interface
• News Monitoring: Track specific topics across multiple sources using the search functionality
• Headless CMS Integration: Feed dynamic content into websites and applications
• Research Tools: Collect and analyze content from multiple sources with a standardized API

Contributing

Contributions are welcome! Please see our Contributing Guide for details.

License

This project is licensed under the MIT License - see the LICENSE file for details.