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](https://www.nuget.org/packages/RoslynCodeLens.Mcp) [ ](https://github.com/MarcelRoozekrans/roslyn-codelens-mcp/actions) [
A Roslyn-based MCP server that gives AI agents deep semantic understanding of .NET codebases — type hierarchies, call graphs, DI registrations, diagnostics, refactoring, and more.
A hosted deployment is available on Fronteir AI.
- find_implementations — Find all classes/structs implementing an interface or extending a class
- find_callers — Find every call site for a method, property, or constructor
- get_type_hierarchy — Walk base classes, interfaces, and derived types
- get_di_registrations — Scan for DI service registrations
- get_project_dependencies — Get the project reference graph
- get_symbol_context — One-shot context dump for any type
- find_reflection_usage — Detect dynamic/reflection-based usage
- find_references — Find all references to any symbol (types, methods, properties, fields, events)
- go_to_definition — Find the source file and line where a symbol is defined
- get_diagnostics — List compiler errors, warnings, and Roslyn analyzer diagnostics
- get_code_fixes — Get available code fixes with structured text edits for any diagnostic
- search_symbols — Fuzzy workspace symbol search by name
- get_nuget_dependencies — List NuGet package references per projec
Works with Claude (desktop and mobile), Cursor, Windsurf, VS Code, and any MCP-compatible AI app.
Category: Developer Tools
Don't lose this
Three weeks from now, you'll want MarcelRoozekrans/roslyn-codelens-mcp again. Will you remember where to find it?
Save it to your library and the next time you need MarcelRoozekrans/roslyn-codelens-mcp, it’s one tap away — from any AI app you use. Group it into a bench with the rest of the team for that kind of task and you can pull the whole stack at once.
⚡ Pro tip for geeks: add a-gnt 🤵🏻♂️ as a custom connector in Claude or a custom GPT in ChatGPT — one click and your library is right there in the chat. Or, if you’re in an editor, install the a-gnt MCP server and say “use my [bench name]” in Claude Code, Cursor, VS Code, or Windsurf.
a-gnt's Take
Our honest review
This plugs directly into your AI and gives it new abilities it didn't have before. MarcelRoozekrans/roslyn-codelens-mcp. Once connected, just ask your AI to use it. It's completely free and works across most major AI apps. This one just landed in the catalog — worth trying while it's fresh.
Tips for getting started
Tap "Get" above, pick your AI app, and follow the steps. Most installs take under 30 seconds.
What's New
Imported from awesome:punkpeye/awesome-mcp-servers
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