Brave Search MCP with SSE Support

This is a Model Context Protocol (MCP) server that provides Brave Search capabilities with Server-Sent Events (SSE) integration. It can be deployed to Coolify and used as a real-time search service.

Features

• Brave Search API integration through MCP

• Real-time search results using SSE

• Docker and Coolify ready

• TypeScript implementation

• Express.js SSE endpoint

Related MCP server: WebSearch-MCP

Prerequisites

• Brave Search API key

• Node.js 18+

• Docker (for containerized deployment)

• Coolify instance

Local Development

1. Clone the repository

2. Create a .env file with your Brave API key:

   BRAVE_API_KEY=your_api_key_here
   PORT=3001

3. Install dependencies:

   npm install

4. Start development server:

   npm run dev

Docker Deployment

1. Build and run using docker-compose:

   docker-compose up --build

Coolify Deployment

1. In your Coolify dashboard, create a new service

2. Choose "Deploy from Source"

3. Configure the following:

   • Repository URL: Your repository URL

   • Branch: main

   • Build Command: npm run build

   • Start Command: npm start

   • Port: 3001

   • Environment Variables:

     • BRAVE_API_KEY=your_api_key_here

     • PORT=3001

Using the SSE Integration

SSE Endpoint

GET http://your-server:3001/sse

The SSE endpoint provides real-time search results. Connect to it using the EventSource API:

const eventSource = new EventSource('http://your-server:3001/sse');

eventSource.onmessage = (event) => {
  const data = JSON.parse(event.data);
  // Handle the search results
  console.log(data);
};

eventSource.onerror = (error) => {
  console.error('SSE Error:', error);
  eventSource.close();
};

Messages Endpoint

POST http://your-server:3001/messages
Content-Type: application/json

{
  "query": "your search query",
  "count": 10  // optional, default: 10, max: 20
}

Use this endpoint to trigger searches that will be broadcast to all connected SSE clients.

MCP Usage

The server provides the following MCP tool:

• brave_web_search: Performs a web search using the Brave Search API

  {
    query: string;    // Search query
    count?: number;   // Number of results (1-20, default: 10)
  }

Error Handling

• The server broadcasts errors to all connected SSE clients

• Errors are formatted as:

  {
    "type": "error",
    "error": "error message"
  }

Notes

• The SSE connection will stay open until the client closes it

• Each search result is broadcast to all connected clients

• The server automatically handles disconnections and cleanup

• For production deployment, consider implementing authentication for the messages endpoint