MCP MCP Server

If you already use MCP, the mcp mcp server is the piece that lets your assistant work with it directly. A complete implementation of the Model Context Protocol (MCP) for Haskell, split into two packages:.

What the server does

This repository provides a type-safe implementation of the Model Context Protocol in Haskell. MCP is an open protocol that standardizes how applications provide context to Large Language Models (LLMs), enabling AI models to securely connect to data sources and tools.

• Latest Protocol Support — Implements MCP protocol version 2025-06-18
• Complete MCP Protocol Implementation — All MCP message types, requests, responses, and notifications
• Type-Safe Design — Full Haskell type system integration with automatic JSON serialization via Aeson
• HTTP Transport — Servant-based HTTP server with streaming SSE responses
• JWT Authentication — Secure authentication via servant-auth-server
• Extensible Server Interface — Configurable handler framework for implementing custom MCP servers

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Where it fits

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. It is maintained by Tritlo; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Worth knowing first

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.