SvelteLS.MCP

MCP server that wraps the Svelte Language Server, exposing its LSP capabilities as MCP tools for Claude Code.

Architecture

Claude Code <--MCP/stdio--> SvelteLS.MCP <--LSP/stdio--> svelteserver

Setup

npm install
npm run build

Usage

node dist/index.js [path-to-svelte-project]

The project path is optional. If omitted, use the load_project tool at runtime to set it.

Claude Code MCP config

Windows

{
  "mcpServers": {
    "svelte-ls": {
      "command": "cmd",
      "args": ["/c", "node", "F:\\Shared\\SvelteLS.MCP\\dist\\index.js", "F:\\path\\to\\svelte\\project"]
    }
  }
}

macOS / Linux

{
  "mcpServers": {
    "svelte-ls": {
      "command": "node",
      "args": ["/path/to/SvelteLS.MCP/dist/index.js", "/path/to/svelte/project"]
    }
  }
}

Tools

Navigation

• find_definition - Go to definition of a symbol
• find_references - Find all references to a symbol
• get_hover - Get hover documentation and type info
• go_to_implementation - Find implementations of an interface/abstract method
• go_to_type_definition - Jump to the type definition of a symbol
• find_document_symbols - List all symbols in a file
• find_workspace_symbols - Search symbols across the workspace

Diagnostics

• get_diagnostics - Get errors, warnings, and diagnostics for a file

Editing

• rename_symbol - Rename a symbol across the workspace
• format_document - Format a file or line range

Code Actions

• get_code_actions - List available quick fixes and refactorings
• apply_code_action - Apply a code action by title

IntelliSense

• get_completion - Get completion suggestions at a position
• get_signature_help - Get method signature overloads and parameter info

Call Hierarchy

• incoming_calls - Find all callers of a function/method
• outgoing_calls - Find all calls from a function/method

Lifecycle

• load_project - Load a Svelte project by its root directory
• restart_lsp - Restart the Svelte language server

Svelte-specific

• get_compiled_code - Get compiled JS/CSS output for a Svelte component
• get_component_references - Find all usages of a Svelte component
• get_file_references - Find all files that import a given file

Environment Variables

• SVELTELS_TIMEOUT - LSP request timeout in ms (default: 30000)
• SVELTELS_SERVER_PATH - Override path to the svelteserver entry script