CSharpLangMCPServer MCP Server

An MCP server that exposes features of VSCode dev tools to the MCP clients

Local serverstdioTypeScript

What is the CSharpLangMCPServer MCP server?

Most developer tooling work still happens through a UI a human drives. CSharpLangMCPServer MCP server moves it into the conversation instead. An MCP server that exposes features of VSCode dev tools to the MCP clients.

The short version

This VS Code extension provides a Model Context Protocol (MCP) server that exposes VSCode's powerful development tools and language features to AI tools. It enables advanced code navigation, analysis, and manipulation capabilities when using AI coding assistants that support the MCP protocol.

  • Language Server Integration — Access VSCode's language server capabilities for any supported language
  • Code Navigation — Find references, definitions, implementations, and more
  • Symbol Search — Search for symbols across your workspace
  • Code Analysis — Get semantic tokens, document symbols, and type information
  • Smart Selection — Use semantic selection ranges for intelligent code selection
  • Code Actions — Access refactoring suggestions and quick fixes

Getting it running

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.

The tools it exposes

The server publishes 3 tools. What each one is for:

  • rename — Perform rename on a symbol
  • Installation — 1. Install the extension from the VS Code marketplace 2. Install any
  • Configuration — The extension will automatically start an MCP server when activated. To configure an AI assistant to use this server:

What it needs from you

  • Visual Studio Code version 1.93.0 or higher - Appropriate language extensions for the languages you want to work with (e.g., C# extension for C# files)

Things to watch

  • 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.

How it compares

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. CSharpLangMCPServer's toolset — rename, Installation, Configuration — is a fair guide to whether it matches your workflow. It is maintained by biegehydra; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Available tools

ToolWhat it does
renamePerform rename on a symbol
Installation1. Install [the extension](https://marketplace.visualstudio.com/items?itemName=ConnorHallman.bifrost-mcp) from the VS Code marketplace 2. Install any language-specific extensions you need for your development 3. Open you
ConfigurationThe extension will automatically start an MCP server when activated. To configure an AI assistant to use this server:

How to install the CSharpLangMCPServer MCP server

{
  "mcpServers": {
    "Bifrost": {
      "command": "cmd",
      "args": [
        "/c",
        "npx",
        "-y",
        "supergateway",
        "--sse",
        "http://localhost:8008/sse"
      ],
      "disabled": false,
      "autoApprove": [],
      "timeout": 600
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Visual Studio Code version 1.93.0 or higher - Appropriate language extensions for the languages you want to work with (e.g., C# extension for C# files)

Example prompts to try

  • Use CSharpLangMCPServer to rename.
  • Use CSharpLangMCPServer to Installation.
  • Use CSharpLangMCPServer to Configuration.

Frequently asked questions

It connects CSharpLangMCPServer to MCP-compatible AI assistants such as Claude and Cursor, exposing 3 tools (rename, Installation, Configuration) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with CSharpLangMCPServer directly.