lsp-index-mcp

LSP-to-MCP Bridge - Headless LSP Client exposing IDE capabilities to AI via the Model Context Protocol (MCP).

Installation

npm install -g lsp-index-mcp

Or use with npx (no installation required):

npx -y lsp-index-mcp /path/to/your/project

Usage

As MCP Server in Claude Desktop

Add to your Claude Desktop config (claude_desktop_config.json):

{
  "mcpServers": {
    "lsp-index": {
      "command": "npx",
      "args": [
        "-y",
        "lsp-index-mcp",
        "/path/to/your/project"
      ]
    }
  }
}

With Environment Variable

{
  "mcpServers": {
    "lsp-index": {
      "command": "npx",
      "args": ["-y", "lsp-index-mcp"],
      "env": {
        "LSP_INDEX_WORKSPACE": "/path/to/your/project"
      }
    }
  }
}

Supported Languages

• Rust (rust-analyzer) - Cargo.toml
• Java (JDT LS) - pom.xml, build.gradle, build.gradle.kts
• Go (gopls) - go.mod
• TypeScript - package.json

Features

• lsp_goto_definition - Jump to symbol definition
• lsp_find_references - Find all references
• lsp_hover - Get type info and documentation
• lsp_workspace_symbols - Search symbols across workspace
• lsp_get_diagnostics - Get lint/type errors
• lsp_hybrid_search - Combined symbol + text search

Manual Binary Download

If npm install fails, download manually from GitHub Releases.

License

MIT