What C# LSP does in Claude
C# language server integration for Claude Code, providing rich code intelligence for C# projects. Powered by the Roslyn-based csharp-ls language server, this plugin enables intelligent code completion, real-time diagnostics, symbol navigation, hover documentation, and refactoring capabilities for .cs files. Key features include automatic error detection and reporting, go-to-definition, find references, code formatting with .editorconfig support, and smart suggestions based on your project context. The plugin supports .NET Core, .NET Framework, and multi-project solutions. How to use: After installing the plugin and the csharp-ls language server (via dotnet tool install --global csharp-ls or brew install csharp-ls), Claude Code automatically provides enhanced C# support. Simply open a C# project and start coding—you'll get intelligent completions, inline diagnostics, and quick-fix suggestions as you work. Requires .NET SDK 6.0 or later.
How to add C# LSP to Claude
- 1
In Claude Code, run
/pluginand open the Discover tab. - 2 Search for C# LSP and choose Install. In Cowork, add it from the plugin directory.
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Questions people ask
What does the C# LSP plugin do in Claude?
C# language server integration for Claude Code, providing rich code intelligence for C# projects. Powered by the Roslyn-based csharp-ls language server, this plugin enables intelligent code completion, real-time diagnostics, symbol navigation, hover documentation, and refactoring capabilities for .cs files. Key features include automatic error detection and reporting, go-to-definition, find references, code formatting with .editorconfig support, and smart suggestions based on your project context. The plugin supports .NET Core, .NET Framework, and multi-project solutions. How to use: After installing the plugin and the csharp-ls language server (via dotnet tool install --global csharp-ls or brew install csharp-ls), Claude Code automatically provides enhanced C# support. Simply open a C# project and start coding—you'll get intelligent completions, inline diagnostics, and quick-fix suggestions as you work. Requires .NET SDK 6.0 or later.
Is the C# LSP plugin official?
It is made by Anthropic and carries the Anthropic verified mark in Anthropic’s directory. This site is independent and lists it from the official directory.