Claude Code LSPs
A collection of Language Server Protocol (LSP) plugins for Claude Code.
What is LSP Integration?
[!NOTE] LSP Integration: If you're on v2.0.69 through v2.0.x, LSP integration is broken due to a race condition (#14803, #13952). This has been fixed in v2.1.0+. Please upgrade to the latest version.
The Language Server Protocol provides IDE-like intelligence to Claude Code. On startup, Claude Code automatically starts LSP servers from installed plugins and exposes them to Claude in two ways:
LSP Tool - A builtin tool with 9 operations mapping directly to LSP commands:
| Operation | Description |
|---|---|
goToDefinition | Find where a symbol is defined |
findReferences | Find all references to a symbol |
hover | Get hover info (docs, type info) for a symbol |
documentSymbol | Get all symbols (functions, classes, variables) in a document |
workspaceSymbol | Search for symbols across the entire workspace |
goToImplementation | Find implementations of an interface/abstract method |
prepareCallHierarchy | Get call hierarchy item at a position |
incomingCalls | Find all functions/methods that call the function at a position |
outgoingCalls | Find all functions/methods called by the function at a position |
Automatic Diagnostics - Real-time error and warning detection similar to the VS Code integration, but operating independently. These diagnostics tend to be faster and more comprehensive than the VS Code equivalent.
Available Plugins
| Plugin | Language | Extensions | LSP |
|---|---|---|---|
| bash-language-server | Bash/Shell | .sh .bash .zsh .ksh | bash-language-server |
| clangd | C/C++/Objective-C | .c .h .cpp .hpp .cc .cxx .hxx .m .mm | clangd |
| clojure-lsp | Clojure | .clj .cljs .cljc .edn | clojure-lsp |
| dart-analyzer | Dart/Flutter | .dart | Dart SDK |
| elixir-ls | Elixir | .ex .exs | elixir-ls |
| gleam | Gleam | .gleam | gleam |
| gopls | Go | .go | gopls |
| intelephense | PHP | .php .phtml | Intelephense |
| jdtls | Java | .java | jdtls |
| kotlin-lsp | Kotlin | .kt .kts | kotlin-lsp |
| lua-language-server | Lua | .lua | lua-language-server |
| nixd | Nix | .nix | nixd |