hackage-doc-mcp is an MCP server written in Haskell that lets AI agents query Hackage for:

• Hoogle searches
• Listing exposed modules of a package
• Fetching a module's Haddock documentation converted to compact, LLM-friendly Markdown

The server exposes an MCP-compatible stdio interface and implements the following tools:

• search_hoogle — search Hoogle for identifiers, types, or packages
• list_package_modules — list exposed modules of a Hackage package
• get_module_docs — fetch Markdown docs for a given package + module

Prerequisites

• docker (for containerized runs)

Pull the latest Docker image from Docker Hub:

docker pull tusharknight8/hackage-doc-mcp:latest

VS Code MCP client configuration

Add an entry to your mcp.json pointing to the running server:

{
	"servers": {
    "hackage-doc": {
     "type": "stdio",
      "command": "docker",
      "args": [
        "run", "-i", "--rm", "tusharknight8/hackage-doc-mcp:latest"
      ]
    }
  },
	"inputs": []
}

Below images are captured with VS code + github copilot.

• Build: stack build
• Run tests: stack test

Contributions are welcome. Please open issues or pull requests against the develop branch. When proposing changes, include:

• A short description of the change
• How to reproduce and test it locally

• Improve Markdown conversion of module pages
• Add more robust scraping for different Hackage layouts

This project is released under the MIT License. See the LICENSE file.

• haskell-mcp-server