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csharp-lsp Claude Code Plugin

Author
Anthropic
Category
Development
Topics
Code Search & Code Intelligence
Version
1.0.0
First cataloged
2026-07-09 (UTC)
Explanation last updated
2026-07-14 (UTC)
Source (GitHub) last updated
2026-02-20 (UTC) (188 days ago)

The explanation below is AI-generated. Please verify it against the sources.

csharp-lsp is a Claude Code plugin that adds a C# language server to enable code intelligence and diagnostics for .cs files. It can be installed either as a global .NET tool or via Homebrew on macOS. Running it requires .NET SDK version 6.0 or later. The underlying language server it relies on is the csharp-ls project, referenced in the README for further details.

What you can do with csharp-lsp

  • Enable code intelligence (such as completions and analysis) for C# (.cs) files within Claude Code
  • Receive diagnostics for C# code
  • Install the underlying language server via a global .NET tool command
  • Alternatively install it via Homebrew on macOS
  • Requires .NET SDK 6.0 or later to run

Sources

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