Desktop Commander MCP

Instructions

Implementation Reference

• src/tools/filesystem.ts:152-154 (handler)

  The core handler function that executes the tool logic, simply returning the predefined list of allowed directories.
  export function listAllowedDirectories(): string[] { return allowedDirectories; }
• src/server.ts:188-197 (registration)

  Tool registration in the ListToolsRequestSchema handler, including name, description, and empty input schema (no parameters required).
  { name: "list_allowed_directories", description: "Returns the list of directories that this server is allowed to access.", inputSchema: { type: "object", properties: {}, required: [], }, },
• src/server.ts:327-335 (handler)

  Dispatcher case in CallToolRequestSchema handler that invokes the listAllowedDirectories function and formats the response.
  case "list_allowed_directories": { const directories = listAllowedDirectories(); return { content: [{ type: "text", text: `Allowed directories:\n${directories.join('\n')}` }], }; }
• src/tools/filesystem.ts:6-9 (helper)

  Helper constant defining the actual list of allowed directories used by the tool.
  const allowedDirectories: string[] = [ process.cwd(), // Current working directory os.homedir() // User's home directory ];
• src/server.ts:38-39 (registration)

  Import of the handler function from filesystem module.
  listAllowedDirectories, } from './tools/filesystem.js';