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language-server-mcp MCP Server

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Overview

language-server-mcp is a Model Context Protocol (MCP) server that enhances code editing experiences by providing language support features such as hover information, code completion, and diagnostics.

To use language-server-mcp, install the dependencies, build the server, and configure it with your code editor. For Claude Desktop, add the server configuration to the appropriate config file based on your operating system.

  • Provides hover information for symbols in code - Offers code completion suggestions - Reports diagnostic information (errors, warnings) - Implements the MCP protocol for seamless communication with clients
  1. Enhancing TypeScript code editing with real-time feedback
  2. Supporting additional languages like Python in the future
  3. Integrating with various code editors for improved development workflows

Add to your AI client

Use these steps to connect language-server-mcp MCP Server in Cursor, Claude, VS Code, and other MCP-compatible apps. The same JSON appears in the Use with menu above for one-click copy.

Cursor

Add this to your .cursor/mcp.json file in your project root, then restart Cursor.

.cursor/mcp.json

{
  "mcpServers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

Claude Desktop

Add this server entry to the mcpServers object in your Claude Desktop config, then restart the app.

~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

{
  "mcpServers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

Claude Code

Add this to your project's .mcp.json file. Claude Code will detect it automatically.

.mcp.json (project root)

{
  "mcpServers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

VS Code (Copilot)

Add this to your .vscode/mcp.json file. Requires the GitHub Copilot extension with MCP support enabled.

.vscode/mcp.json

{
  "servers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

Windsurf

Add this to your Windsurf MCP config file, then restart Windsurf.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

Cline

Open Cline settings, navigate to MCP Servers, and add this server configuration.

Cline MCP Settings (via UI)

{
  "mcpServers": {
    "alexwohletz-language-server-mcp-mcp-mirror": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-alexwohletz-language-server-mcp-mcp-mirror"
      ]
    }
  }
}

FAQ

What languages does language-server-mcp support?

Currently, it is tested with TypeScript and theoretically supports Python, with plans to add more languages.

How do I install language-server-mcp?

Install dependencies using `npm install`, build the server with `npm run build`, and configure it in your code editor.

How can I debug the server?

Use the MCP Inspector for debugging, which provides a URL to access debugging tools in your browser.7:["$","div",null,{"className":"container mx-auto flex flex-col gap-4","children":["$L26","$L27",["$","$L28",null,{"currentProject":{"id":692,"uuid":"9319bf92-4be3-4504-b8b6-b3964a7b9643","name":"alexwohletz_language-server-mcp","title":"language-server-mcp MCP Server","description":"Mirror of","avatar_url":"https://avatars.githubusercontent.com/u/192820360?v=4","created_at":"2024-12-30T03:26:34.454Z","updated_at":"2025-02-23T07:16:03.777Z","status":"created","author_name":"MCP-Mirror","author_avatar_url":"https://avatars.githubusercontent.com/u/192820360?v=4","tags":"language-server,mcp,code-editing","category":"developer-tools","is_featured":false,"sort":1,"url":"https://github.com/MCP-Mirror/alexwohletz_language-server-mcp","target":"_self","content":"$29","summary":"$2a","img_url":null,"type":null,"metadata":null,"user_uuid":null,"tools":null,"sse_url":null,"sse_provider":null,"sse_params":null,"is_official":false,"server_command":null,"server_params":null,"server_config":null,"allow_call":false,"is_innovation":false,"is_dxt":false,"dxt_manifest":null,"dxt_file_url":null,"is_audit":false},"randomProjects":[],"currentServerKey":"$undefined"}]]}]

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