Language Server

by alexwohletz

24 stars

306 downloads

Not rated

GitHub

About

Integrates language server capabilities to provide code analysis, completion, and diagnostics for developing in various languages.

Details

Author: alexwohletz
Repository: alexwohletz/language-server-mcp
GitHub stars: 24
Downloads: 306
License: MIT License
Categories: Design, Developer Tools, AI, Frontend, Automation, Knowledge Base, Infrastructure, Other

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below
Plugin Name Language Server

Command (node, npx, python, etc.) node
Arguments
- Argument 1 /path/to/language-server-mcp/build/index.js
Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

JSON

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

From the repository

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "language-server-mcp": {
      "command": "/path/to/language-server-mcp/build/index.js"
    }
  }
}

`get_hover`

Get hover information for a position in a document. Takes languageId, filePath, content, line, and character as required parameters.

`get_completions`

Get completion suggestions for a position in a document. Takes languageId, filePath, content, line, and character as required parameters.

`get_diagnostics`

Get diagnostic information for a document. Takes languageId, filePath, and content as required parameters.

- get_hover: Get hover information for a position in a document
- Takes languageId, filePath, content, line, and character as required parameters
- get_completions: Get completion suggestions for a position in a document
- Takes languageId, filePath, content, line, and character as required parameters
- get_diagnostics: Get diagnostic information for a document
- Takes languageId, filePath, and content as required parameters

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "language server": {
            "cwd": "optional_directory_if_specified",
            "env": {},
            "args": [
                "/path/to/language-server-mcp/build/index.js"
            ],
            "shell": false,
            "command": "node"
        }
    }
}

Linux

{
    "cwd": "optional_directory_if_specified",
    "env": [],
    "args": [
        "/path/to/language-server-mcp/build/index.js"
    ],
    "shell": false,
    "command": "node"
}

Macos

{
    "cwd": "optional_directory_if_specified",
    "env": [],
    "args": [
        "/path/to/language-server-mcp/build/index.js"
    ],
    "shell": false,
    "command": "node"
}

Windows

{
    "cwd": "optional_directory_if_specified",
    "env": [],
    "args": [
        "/path/to/language-server-mcp/build/index.js"
    ],
    "shell": false,
    "command": "node"
}

language-server-mcp MCP Server

A Model Context Protocol (MCP) server providing language support for code editing.

This is a TypeScript-based MCP server designed to enhance code editing experiences by providing features such as hover information, code completion, and diagnostics. It demonstrates core MCP concepts by providing:

- Language-specific tools for code analysis and manipulation
- Integration with the Model Context Protocol for seamless communication

Features

Language Support

- Provides hover information for symbols in code - Offers code completion suggestions - Reports diagnostic information (errors, warnings) - Only tested with typescript, theoretically should support Python. Would love to add additional language servers or be more agnostic if possible.

MCP Integration

- Implements the MCP protocol for communication with clients - Exposes language features as MCP tools

Tools

- get_hover: Get hover information for a position in a document - Takes languageId, filePath, content, line, and character as required parameters - get_completions: Get completion suggestions for a position in a document - Takes languageId, filePath, content, line, and character as required parameters - get_diagnostics: Get diagnostic information for a document - Takes languageId, filePath, and content as required parameters

Development

Install dependencies:

npm install

Build the server:

npm run build

For development with auto-rebuild:

npm run watch

Installation

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "language-server-mcp": {
      "command": "/path/to/language-server-mcp/build/index.js"
    }
  }
}

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector, which is available as a package script:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.

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About

Details

Jump to

Setting up with Highlight

From the repository

get_hover

get_completions

get_diagnostics

Claude Desktop / Cursor

Linux

Macos

Windows

language-server-mcp MCP Server

Features

Language Support

MCP Integration

Tools

Development

Installation

Debugging

Install

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`get_hover`

`get_completions`

`get_diagnostics`