/lsp-setup

Known LSP Servers for Copilot CLI

Reference data for the lsp-setup skill. Each section contains install commands per OS and a ready-to-use config snippet.

Config snippet format: Each snippet below shows the object to insert as a value under the top-level lspServers key. A complete config file looks like: { "lspServers": { <snippet here> } }. When adding multiple languages, merge their snippets as sibling keys under lspServers.

TypeScript / JavaScript

Server: typescript-language-server

Install

Config snippet

{
  "typescript": {
    "command": "typescript-language-server",
    "args": ["--stdio"],
    "fileExtensions": {
      ".ts": "typescript",
      ".tsx": "typescriptreact",
      ".js": "javascript",
      ".jsx": "javascriptreact"
    }
  }
}

Java

Server: Eclipse JDT Language Server (jdtls)

Requires Java 21+ on JAVA_HOME or $PATH.

Install

On macOS with Homebrew, the binary is installed as jdtls on $PATH.

Config snippet

{
  "java": {
    "command": "jdtls",
    "args": [],
    "fileExtensions": {
      ".java": "java"
    }
  }
}

Note: The jdtls wrapper script handles --stdio mode internally. If using a manual install, you may need to invoke the launcher jar directly — see the jdtls README for details.

Python

Server: pyright

Install

Config snippet

{
  "python": {
    "command": "pyright-langserver",
    "args": ["--stdio"],
    "fileExtensions": {
      ".py": "python"
    }
  }
}

Go

Server: gopls

Install

Config snippet

{
  "go": {
    "command": "gopls",
    "args": ["serve"],
    "fileExtensions": {
      ".go": "go"
    }
  }
}

Rust

Server: rust-analyzer

Install

Config snippet

{
  "rust": {
    "command": "rust-analyzer",
    "args": [],
    "fileExtensions": {
      ".rs": "rust"
    }
  }
}

C / C++

Server: clangd

Install

Config snippet

{
  "cpp": {
    "command": "clangd",
    "args": ["--background-index"],
    "fileExtensions": {
      ".c": "c",
      ".h": "c",
      ".cpp": "cpp",
      ".cxx": "cpp",
      ".cc": "cpp",
      ".hpp": "cpp",
      ".hxx": "cpp"
    }
  }
}

C# (.NET)

Server: Roslyn Language Server (via dotnet dnx)

Install

Config snippet

{
  "csharp": {
    "command": "dotnet",
    "args": ["dnx", "roslyn-language-server", "--yes", "--prerelease", "--", "--stdio", "--autoLoadProjects"],
    "fileExtensions": {
      ".cs": "csharp"
    }
  }
}

Ruby

Server: solargraph

Install

Config snippet

{
  "ruby": {
    "command": "solargraph",
    "args": ["stdio"],
    "fileExtensions": {
      ".rb": "ruby",
      ".rake": "ruby",
      ".gemspec": "ruby"
    }
  }
}

PHP

Server: intelephense

Install

Config snippet

{
  "php": {
    "command": "intelephense",
    "args": ["--stdio"],
    "fileExtensions": {
      ".php": "php"
    }
  }
}

Kotlin

Server: kotlin-language-server

Install

Config snippet

{
  "kotlin": {
    "command": "kotlin-language-server",
    "args": [],
    "fileExtensions": {
      ".kt": "kotlin",
      ".kts": "kotlin"
    }
  }
}

Swift

Server: sourcekit-lsp (bundled with Swift toolchain)

Install

Config snippet

{
  "swift": {
    "command": "sourcekit-lsp",
    "args": [],
    "fileExtensions": {
      ".swift": "swift"
    }
  }
}

On macOS you may need to use the full path: /usr/bin/sourcekit-lsp or set command to xcrun with args: ["sourcekit-lsp"].

Lua

Server: lua-language-server

Install

Config snippet

{
  "lua": {
    "command": "lua-language-server",
    "args": [],
    "fileExtensions": {
      ".lua": "lua"
    }
  }
}

YAML

Server: yaml-language-server

Install

Config snippet

{
  "yaml": {
    "command": "yaml-language-server",
    "args": ["--stdio"],
    "fileExtensions": {
      ".yaml": "yaml",
      ".yml": "yaml"
    }
  }
}

Bash / Shell

Server: bash-language-server

Install

Config snippet

{
  "bash": {
    "command": "bash-language-server",
    "args": ["start"],
    "fileExtensions": {
      ".sh": "shellscript",
      ".bash": "shellscript",
      ".zsh": "shellscript"
    }
  }
}