Halans Content MCP Server

This MCP (Model Context Protocol) server provides content querying tools for halans.com. It offers two deployment options: a local stdio-based server for direct Claude Desktop integration, and a Cloudflare Workers deployment for remote access.

Available Tools

The MCP server provides four content querying tools:

1. search_content - Search for specific terms in halans.com content with context

2. get_section - Retrieve specific sections by title/heading

3. get_full_content - Get the complete content with optional truncation

4. get_content_summary - Generate content statistics and table of contents

Related MCP server: Wikipedia MCP Server

Available Resources

The MCP server also exposes three browseable resources:

1. halans://content - Complete content from halans.com in plain text format

2. halans://content-summary - Content statistics and hierarchical table of contents

3. halans://articles-list - Structured JSON list of all blog articles with titles, dates, URLs, and excerpts

Quick Start

Option 1: Local Stdio Server (Recommended)

1. Clone and install dependencies:

git clone https://github.com/halans/halans-mcp-server
cd halans-mcp-server
npm install

2. Configure Claude Desktop by adding to your MCP config:

{
  "mcpServers": {
    "halans-content": {
      "command": "node",
      "args": ["/path/to/halans-mcp-server/mcp-stdio.js"],
      "env": {}
    }
  }
}

3. Restart Claude Desktop and the tools will be available.

Option 2: Cloudflare Workers Deployment

1. Prerequisites:

   • Sign up for a Cloudflare account

   • Install Wrangler CLI

2. Authenticate with Cloudflare:

npx wrangler login

3. Deploy to Cloudflare Workers:

npm run deploy

This will deploy your MCP server to a URL like: halans-mcp-server.<your-account>.workers.dev/sse

4. One-Click Deploy (Alternative):

   

Cloudflare Workers Features

This MCP server leverages several Cloudflare Workers features:

• Edge Computing: Runs close to users worldwide for low latency

• Durable Objects: Maintains stateful MCP agent instances

• Server-Sent Events: Real-time communication with MCP clients

• No Cold Starts: Fast response times with Cloudflare's V8 isolates

• Built-in Observability: Monitoring and analytics through Cloudflare dashboard

Worker Configuration

The server exposes two endpoints:

• /sse - Server-Sent Events endpoint for MCP communication

• /mcp - Standard MCP endpoint

Configuration is managed in wrangler.jsonc:

{
  "name": "halans-mcp-server",
  "main": "src/index.ts",
  "compatibility_date": "2025-03-10",
  "durable_objects": {
    "bindings": [
      {
        "class_name": "MyMCP",
        "name": "MCP_OBJECT"
      }
    ]
  }
}

Development

Local Development with Wrangler

# Start the Cloudflare Workers dev server
npm run dev

# Run TypeScript type checking
npm run type-check

# Format code
npm run format

# Fix linting issues
npm run lint:fix

Local Development with Stdio Server

# Test the stdio server directly
node mcp-stdio.js

# The server will wait for MCP protocol messages on stdin

Project Structure

├── src/
│   └── index.ts           # Cloudflare Workers MCP server
├── mcp-stdio.js          # Local stdio MCP server
├── package.json          # Dependencies and scripts
├── wrangler.jsonc        # Cloudflare Workers config
├── CLAUDE.md            # Claude-specific documentation
└── README.md            # This file

Content Sources

The server uses two different content sources with separate 5-minute caching:

Tools Content (https://halans.com/llms-full.txt)

Used by search_content, get_section, get_full_content, and get_content_summary tools:

• Complete blog content with full article text

• Technical documentation and detailed explanations

• Comprehensive project descriptions

• Full conference notes and insights

Resources Content (https://halans.com/llms.txt)

Used by the browseable resources (halans://content, etc.):

• Sorted chronological list of articles (year descending)

• Article titles, publication dates, and URLs

• Structured metadata for easy browsing

• Content excerpts and summaries

Test locally with MCP Inspector

npx @modelcontextprotocol/inspector

Connecting to Claude Desktop

For Local Stdio Server

Add this to your Claude Desktop MCP configuration:

{
  "mcpServers": {
    "halans-content": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-stdio.js"],
      "env": {}
    }
  }
}

For Deployed Workers (with mcp-remote)

{
  "mcpServers": {
    "halans-content": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://your-worker-url.workers.dev/sse"
      ]
    }
  }
}

Connect to Cloudflare AI Playground

For deployed Workers, you can test the MCP server using Cloudflare AI Playground:

1. Go to https://playground.ai.cloudflare.com/

2. Enter your deployed MCP server URL (your-worker-url.workers.dev/sse)

3. Test the content querying tools directly

Run MCP inspector

npx @modelcontextprotocol/inspector@latest

Deployment Customization

Custom Domain (Optional)

To use a custom domain with your Cloudflare Worker:

1. Add a custom domain in your Cloudflare dashboard

2. Update wrangler.jsonc with your domain:

{
  "routes": [
    {
      "pattern": "mcp.yourdomain.com/*",
      "custom_domain": true
    }
  ]
}

Environment Variables

Add environment variables for configuration:

# Set environment variables
npx wrangler secret put API_KEY
npx wrangler secret put CONTENT_URL

Then access them in your Worker:

// In src/index.ts
const toolsContentUrl = env.TOOLS_CONTENT_URL || "https://halans.com/llms-full.txt";
const resourcesContentUrl = env.RESOURCES_CONTENT_URL || "https://halans.com/llms.txt";

Troubleshooting

Common Issues

1. MCP Connection Failed

   • Ensure the server URL is correct

   • Check that the Worker is deployed and accessible

   • Verify Claude Desktop configuration

2. Content Fetching Errors

   • Check if https://halans.com/llms-full.txt and https://halans.com/llms.txt are accessible

   • Verify network connectivity from the Worker

   • Monitor Cloudflare logs for fetch errors

3. Development Server Issues

   • Run npm install to ensure dependencies are installed

   • Check Node.js version compatibility (v18+ recommended)

   • Use npm run type-check to identify TypeScript errors

Monitoring

• View Worker logs in the Cloudflare dashboard

• Use wrangler tail for real-time log monitoring

• Monitor MCP server logs in Claude Desktop

Customization

To add your own tools:

• Stdio server: Edit mcp-stdio.js and add new tool handlers

• Workers server: Edit src/index.ts and add tools in the init() method

Example: Adding a New Tool

// In src/index.ts or mcp-stdio.js
this.server.tool(
    "new_tool",
    {
        parameter: z.string().describe("Tool parameter")
    },
    async ({ parameter }) => {
        // Tool implementation
        return {
            content: [{ type: "text", text: `Result: ${parameter}` }]
        };
    }
);