Roslyn Codelens

Name: Roslyn Codelens
Author: MarcelRoozekrans

by MarcelRoozekranscommunityv1.14.0

A Roslyn-based MCP server that provides AI agents with deep semantic understanding of .NET codebases, including type hierarchies, call graphs, and diagnostics.

From the registry: Roslyn-based MCP server providing semantic code intelligence for .NET codebases.

GitHub Repository

Install & configure

Prerequisites

required
.NET SDK
.NET 10 SDK required.
https://dotnet.microsoft.com/download
required
Install global tool
Install as .NET global tool.
```
$ dotnet tool install -g RoslynCodeLens.Mcp
```
https://www.nuget.org/packages/RoslynCodeLens.Mcp

Install in your client

Paste into the AI you're chatting with — it will figure out the rest

Please install the `roslyn-codelens` MCP server into my current AI client (that's you).

Required prerequisites (do these first if not already done):
- **.NET SDK** — .NET 10 SDK required. (https://dotnet.microsoft.com/download)
- **Install global tool** — Install as .NET global tool. Run: `dotnet tool install -g RoslynCodeLens.Mcp` (https://www.nuget.org/packages/RoslynCodeLens.Mcp)

Canonical MCP server config (stdio transport):
- command: `roslyn-codelens-mcp`
- args: []

Note: Deep semantic understanding of .NET codebases via Roslyn. 30+ tools: find implementations, callers, type hierarchies, DI registrations, diagnostics, code fixes, refactoring, data/control flow analysis. Also available via dnx or claude install gh:MarcelRoozekrans/roslyn-codelens-mcp.

Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.

Note: Deep semantic understanding of .NET codebases via Roslyn. 30+ tools: find implementations, callers, type hierarchies, DI registrations, diagnostics, code fixes, refactoring, data/control flow analysis. Also available via dnx or claude install gh:MarcelRoozekrans/roslyn-codelens-mcp.