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MCP Language Server
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MCP Language Server

A language server tool based on the MCP protocol, providing precise code analysis capabilities for LLMs
Developer toolsArtificial intelligence chatbots#Code analysis#Language server#Development tool#MCP protocol.Go
3.5 points
10.1K
Open Site

Overview

Installation

Content Details

Alternatives

What is the MCP Language Server?

The MCP Language Server is a bridge tool that integrates the standard Language Server Protocol (LSP) capabilities into the Model Context Protocol (MCP) ecosystem. This enables AI assistants like Claude to directly access the capabilities of professional development tools such as code analysis, autocompletion, and error checking.

How to use the MCP Language Server?

You need to install the corresponding language servers (such as pyright, gopls, etc.), and then configure the path and workspace of the MCP Language Server in the MCP client (such as Claude Desktop). After the configuration is complete, the AI assistant can use various code analysis tools.

Use cases

It is particularly suitable for working in large codebases when you need an AI assistant to understand complex code structures, find references, rename symbols, or perform precise code editing.

Main features

Read definition
Get the full source code definition of a symbol (function, type, constant, etc.)
Find references
Locate all usage locations of a symbol in the codebase
Get diagnostics
Provide error and warning information in a file
Code lens
Display additional context and executable actions for the code
Rename symbol
Rename a symbol throughout the project
Advantages
Enable AI assistants to obtain professional IDE-level code understanding capabilities
Support multiple programming languages (through different language servers)
Precise code editing and refactoring capabilities
Open source and extensible
Limitations
Require pre - installation and configuration of language servers
Currently in the pre - testing phase, there may be stability issues
Some advanced features are not yet implemented

How to use

Install the Go language environment
Download and install Go from golang.org/doc/install
Install the MCP Language Server
Install the latest version using the go install command
Install the language server
Install the corresponding language server according to your programming language
Configure the MCP client
Add server configuration in MCP clients such as Claude Desktop

Usage examples

Understand a complex function
When an AI assistant needs to understand the implementation details of a complex function
Refactor code
When you need to rename a widely used variable
Fix errors
When a type error occurs in the code

Frequently Asked Questions

Why do I need to install a language server?
Which programming languages are supported?
How to debug issues?

Related resources

GitHub repository
Project source code and latest updates
Language Server Protocol documentation
Official documentation of the LSP protocol
Model Context Protocol
Information related to the MCP protocol

Installation

Copy the following command to your Client for configuration
{
  "mcpServers": {
    "language-server": {
      "command": "mcp-language-server",
      "args": [
        "--workspace",
        "/Users/you/dev/yourcodebase",
        "--lsp",
        "/opt/homebrew/bin/pyright-langserver",
        "--",
        "--stdio"
      ],
      "env": {
        "LOG_LEVEL": "INFO"
      }
    }
  }
}

{
  "mcpServers": {
    "language-server": {
      "command": "/full/path/to/your/clone/mcp-language-server/mcp-language-server",
      "args": [
        "--workspace",
        "/path/to/workspace",
        "--lsp",
        "/path/to/language/server"
      ],
      "env": {
        "LOG_LEVEL": "DEBUG"
      }
    }
  }
}
Note: Your key is sensitive information, do not share it with anyone.

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