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claude_skill_hn_mcp_server

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HackerNews MCP Server created with Claude Skill mcp-builder

0 stars PythonAI & Machine Learning Updated Oct 19, 2025

Documentation

Hacker News MCP Server

A Model Context Protocol (MCP) server that provides access to the Hacker News API. This server allows AI assistants like Claude to fetch stories, comments, user profiles, and other content from Hacker News.

Created with Claude Code using Claude skill mcp-builder.

Features

  • 9 Comprehensive Tools for accessing Hacker News data:
    • `hn_get_item` - Get any item (story, comment, job, poll) by ID
    • `hn_get_top_stories` - Get current front page stories
    • `hn_get_new_stories` - Get newest stories
    • `hn_get_best_stories` - Get best stories of all time
    • `hn_get_ask_stories` - Get Ask HN posts
    • `hn_get_show_stories` - Get Show HN posts
    • `hn_get_job_stories` - Get job postings
    • `hn_get_user` - Get user profile information
    • `hn_get_max_item_id` - Get the latest item ID
  • Flexible Output Formats: Both Markdown (human-readable) and JSON (machine-readable)
  • Pagination Support: Efficiently browse large result sets
  • Detail Levels: Choose between concise summaries or detailed information
  • Rate Limit Handling: Graceful error handling with helpful messages
  • Character Limits: Automatic truncation for large responses
  • Parallel Fetching: Efficient batch requests for multiple items

Requirements

  • Python 3.8+ (tested on Python 3.10+)
  • Windows 10/11 (compatible with PowerShell and Git Bash)

Installation

Step 1: Install Python

If you don't have Python installed:

1. Download Python from python.org

2. Important: During installation, check "Add Python to PATH"

3. Verify installation:

bash
python --version

Using a virtual environment keeps dependencies isolated:

PowerShell:

powershell
cd /path/to/claude_skill_create_hn_mcp_server
python -m venv venv
.\venv\Scripts\Activate.ps1

Git Bash:

bash
cd /path/to/claude_skill_create_hn_mcp_server
python -m venv venv
source venv/Scripts/activate

You should see `(venv)` in your terminal prompt after activation.

Step 3: Install Dependencies

bash
pip install --upgrade pip
pip install mcp httpx pydantic

Verify installation:

bash
python -c "from mcp.server.fastmcp import FastMCP; print('MCP installed successfully')"

Step 4: Test the Server

Verify the server can run:

bash
python hackernews_mcp.py --help

You should see FastMCP help output. The server will appear to hang - this is normal! Press `Ctrl+C` to stop it.

Configuration

For Claude Desktop (Windows)

1. Locate your Claude Desktop config file:

code
%APPDATA%\Claude\claude_desktop_config.json

2. Open it in a text editor and add the Hacker News MCP server:

PowerShell users:

json
{
  "mcpServers": {
    "hackernews": {
      "command": "/path/to/python.exe",
      "args": [
        "/path/to/hackernews_mcp.py"
      ]
    }
  }
}

Git Bash users:

json
{
  "mcpServers": {
    "hackernews": {
      "command": "/path/to/python.exe",
      "args": [
        "/path/to/hackernews_mcp.py"
      ]
    }
  }
}

Important Notes:

  • Use double backslashes (`\\`) in the JSON file paths
  • Use the full absolute paths to both `python.exe` and `hackernews_mcp.py`
  • If you have other MCP servers, add this as another entry in `mcpServers`

3. Restart Claude Desktop

4. Verify the connection:

    For Other MCP Clients

    The server uses stdio transport by default. Configure your MCP client to run:

    bash
    python /path/to/hackernews_mcp.py

    Usage Examples

    Once configured, you can ask Claude to use the Hacker News tools:

    Get Top Stories

    code
    Show me the top 10 stories on Hacker News right now

    Get Story Details

    code
    Get details about HN story with ID 8863

    Search for User

    code
    What's the profile for HN user 'pg'?

    Get Ask HN Posts

    code
    Show me the latest Ask HN questions with at least 50 comments

    Browse Job Postings

    code
    What are the latest 5 job postings on HN?

    Tool Reference

    hn_get_item

    Get complete details for any HN item (story, comment, job, poll).

    Parameters:

    • `item_id` (required): The item ID number
    • `response_format`: "markdown" (default) or "json"
    • `detail_level`: "detailed" (default) or "concise"

    Example:

    json
    {
      "item_id": 8863,
      "response_format": "markdown",
      "detail_level": "detailed"
    }

    hn_get_top_stories

    Get current front page stories.

    Parameters:

    • `limit`: Max stories to return (1-100, default: 30)
    • `offset`: Skip this many stories (default: 0)
    • `response_format`: "markdown" (default) or "json"
    • `detail_level`: "concise" (default) or "detailed"

    hn_get_new_stories

    Get newest stories in chronological order.

    Parameters: Same as `hn_get_top_stories`

    hn_get_best_stories

    Get best stories by HN's algorithm.

    Parameters: Same as `hn_get_top_stories`

    hn_get_ask_stories

    Get latest Ask HN posts.

    Parameters: Same as `hn_get_top_stories`

    hn_get_show_stories

    Get latest Show HN posts.

    Parameters: Same as `hn_get_top_stories`

    hn_get_job_stories

    Get latest job postings.

    Parameters: Same as `hn_get_top_stories`

    hn_get_user

    Get user profile information.

    Parameters:

    • `username` (required): Case-sensitive username
    • `response_format`: "markdown" (default) or "json"
    • `include_submissions`: Include full submission list (default: false)

    Example:

    json
    {
      "username": "pg",
      "response_format": "markdown",
      "include_submissions": false
    }

    hn_get_max_item_id

    Get the current maximum item ID.

    Parameters: None

    Troubleshooting

    "python: command not found"

    Solution: Python is not in your PATH.

    PowerShell:

    powershell
    # Find Python installation
    Get-Command python
    
    # If not found, reinstall Python with "Add to PATH" checked

    Git Bash:

    bash
    # Check if Python is installed
    which python
    
    # Add Python to PATH temporarily
    export PATH="/c/Users/YourUsername/AppData/Local/Programs/Python/Python311:$PATH"

    "No module named 'mcp'"

    Solution: Install dependencies in the virtual environment:

    bash
    # Make sure virtual environment is activated (you should see (venv) in prompt)
    source venv/Scripts/activate  # Git Bash
    # or
    .\venv\Scripts\Activate.ps1   # PowerShell
    
    # Install dependencies
    pip install mcp httpx pydantic

    "Permission denied" when activating virtual environment (PowerShell)

    Solution: Enable script execution:

    powershell
    Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

    Server appears to hang when running

    This is normal behavior! MCP servers are long-running processes that wait for requests over stdio. They don't exit immediately. To test if it's working:

    1. Run `python hackernews_mcp.py --help` - should show help

    2. Configure it in Claude Desktop and use it through Claude

    3. Use `Ctrl+C` to stop the server if running it manually

    Claude Desktop doesn't show HN tools

    Checklist:

    1. Verify JSON syntax in `claude_desktop_config.json` (use a JSON validator)

    2. Use double backslashes in Windows paths: `C:\\Users\\...`

    3. Use full absolute paths, not relative paths

    4. Restart Claude Desktop after config changes

    5. Check Claude Desktop logs (usually in `%APPDATA%\Claude\logs`)

    "Rate limit exceeded" errors

    The Hacker News API has no official rate limit, but if you're making too many requests:

    1. Use `limit` parameter to fetch fewer items

    2. Use `detail_level: "concise"` to reduce API calls

    3. Add delays between requests if needed

    API Documentation

    This server uses the official Hacker News Firebase API:

    • Base URL: `https://hacker-news.firebaseio.com/v0/`
    • Documentation: See `docs/README.md` in this repository
    • Source: Hacker News API on GitHub

    Architecture

    • Framework: FastMCP (official MCP Python SDK)
    • HTTP Client: httpx (async)
    • Validation: Pydantic v2
    • Transport: stdio (standard input/output)

    Key Features:

    • Async/await for all I/O operations
    • Parallel batch fetching for efficiency
    • Comprehensive error handling
    • Character limit enforcement (25,000 chars)
    • Pagination support
    • Input validation with detailed constraints

    Development

    Running Tests

    bash
    # Activate virtual environment first
    source venv/Scripts/activate  # Git Bash
    # or
    .\venv\Scripts\Activate.ps1   # PowerShell
    
    # Test imports
    python -c "from hackernews_mcp import mcp; print('Import successful')"
    
    # Test server help
    python hackernews_mcp.py --help

    Code Structure

    code
    hackernews_mcp.py
    ├── Constants (API_BASE_URL, CHARACTER_LIMIT, etc.)
    ├── Enums (ResponseFormat, DetailLevel)
    ├── Pydantic Models (ItemInput, StoryListInput, UserInput)
    ├── Shared Utilities
    │   ├── _fetch_from_api() - HTTP requests
    │   ├── _fetch_items_batch() - Parallel fetching
    │   ├── _format_timestamp() - Time formatting
    │   ├── _format_item_markdown() - Markdown output
    │   ├── _format_item_json() - JSON output
    │   ├── _handle_api_error() - Error handling
    │   └── _check_truncation() - Character limit enforcement
    └── Tools (9 @mcp.tool decorated functions)

    License

    This MCP server is provided as-is for use with the Hacker News API. The Hacker News API is provided by Y Combinator.

    Credits

    • Hacker News API: Y Combinator
    • MCP Protocol: Anthropic
    • Server Implementation: Created with Claude Code with skill mcp-builder

    Support

    For issues or questions:

    1. Check the Troubleshooting section above

    2. Review the API documentation in `docs/README.md`

    3. Verify your Python and dependency versions

    4. Check Claude Desktop logs for detailed error messages

    Version

    Version: 1.0.0

    Last Updated: 2025-10-18

    Frequently asked questions

    What is claude_skill_hn_mcp_server?

    claude_skill_hn_mcp_server is HackerNews MCP Server created with Claude Skill mcp-builder

    How do I install claude_skill_hn_mcp_server?

    Open the GitHub repository and follow its README. Most MCP servers are added to your client's MCP config, then called by your agent.

    Is claude_skill_hn_mcp_server open source?

    Yes — it is hosted on GitHub at https://github.com/az9713/claude_skill_hn_mcp_server.

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