mcpbeat

Roslyn CodeLens MCP Server

io.github.MarcelRoozekrans/roslyn-codelens
local only

Roslyn CodeLens runs on your own machine — the client starts it, so there is no endpoint to ping. 623 installs a week from npm. Last commit 1 Aug 2026.

Roslyn MCP server: semantic .NET/C# intelligence - analysis, refactoring, tests, IL inspection.

Installs per day peak 511 · avg 20
a month agotoday
623
Installs / week
npm · roslyn-codelens-mcp
39
Stars
1 open issues
1 Aug 2026
Last commit
0 releases in 90 days
MIT
License
C#

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add roslyn-codelens -- npx -y roslyn-codelens-mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "roslyn-codelens": {
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.roslyn-codelens]
command = "npx"
args = ["-y", "roslyn-codelens-mcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "roslyn-codelens": {
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "roslyn-codelens": {
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ],
      "command": "npx"
    }
  }
}

Roslyn CodeLens — questions

Answers built from our own checks of this server.

Why is there no uptime for Roslyn CodeLens?
Roslyn CodeLens runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package roslyn-codelens-mcp was installed 623 times last week.
How do I connect Roslyn CodeLens?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls roslyn-codelens-mcp straight from npm; nothing to host, nothing to sign up for.
How many people use Roslyn CodeLens?
The npm package roslyn-codelens-mcp was installed 623 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Roslyn CodeLens open source?
Yes — it is published under the MIT licence, written in C#, 39 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.