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VSCode LSP MCP Server

by beixiyo
GitHub
TypeScript
MIT License
7
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VSCode LSP MCP

🔍 Overview

VSCode LSP MCP is a Visual Studio Code extension that exposes Language Server Protocol (LSP) features through the Model Context Protocol (MCP). This allows AI assistants and external tools to utilize VSCode's powerful language intelligence capabilities without direct integration.

vscode-ext demo

🌟 Why This Extension?

Large language models like Claude and Cursor struggle to understand your codebase accurately because:

  • They rely on regex patterns to find symbols, leading to false matches

  • They can't analyze import/export relationships properly

  • They don't understand type hierarchies or inheritance

  • They have limited code navigation capabilities

This extension bridges that gap, providing AI tools with the same code intelligence that VSCode uses internally!

⚙️ Features

  • 🔄 LSP Bridge: Converts LSP features into MCP tools

  • 🔌 Multi-Instance Support: Automatically handles port conflicts for multiple VSCode windows

  • 🧠 Rich Code Context: Provides accurate symbol information through LSP

🛠️ Exposed MCP Tools

Tool

Description

get_hover

Get hover information for symbols

get_definition

Find symbol definitions

get_completions

Get intelligent code completions

get_references

Find all references to a symbol

rename_symbol

Rename symbols across files

📋 Configuration

Key

Description

Type

Default

lsp-mcp.enabled

Enable or disable the LSP MCP server.

boolean

true

lsp-mcp.port

Port for the LSP MCP server.

number

9527

lsp-mcp.maxRetries

Maximum number of port retry attempts when the default port is occupied.

number

10

🔗 Integration with AI Tools

Cursor

Install MCP Server

{ "mcpServers": { "lsp": { "url": "http://127.0.0.1:9527/mcp" } } }

Roo Code

{ "mcpServers": { "lsp": { "type": "streamable-http", "url": "http://127.0.0.1:9527/mcp", "disabled": false } } }

💻 Development

  • Clone the repository

  • Run pnpm install

  • Run pnpm run update to generate metadata

  • Press F5 to start debugging

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

local-only server

The server can only run on the client's local machine because it depends on local resources.

An MCP server that exposes Language Server Protocol features to external clients, allowing access to hover information, definitions, completions, references, and rename functionalities.

  1. 🔍 Overview
    1. 🌟 Why This Extension?
  2. ⚙️ Features
    1. 🛠️ Exposed MCP Tools
      1. 📋 Configuration
        1. 🔗 Integration with AI Tools
          1. Cursor
          2. Roo Code
        2. 💻 Development

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