diff --git a/src/interfaces/ClientCommands.ts b/src/interfaces/ClientCommands.ts
index 3e73e65..281cf10 100644
--- a/src/interfaces/ClientCommands.ts
+++ b/src/interfaces/ClientCommands.ts
@@ -19,6 +19,10 @@ export const ClientCommands = {
    * Move the cursor focus to the provided location.
    */
   GotoLocation: "metals-goto-location",
+  /**
+   * Notify the client that the library filesystem is ready for navigation
+   */
+  LibraryFilesystemReady: "metals-library-filesystem-ready",
   /** Open a specific folder either in the same or new window */
   OpenFolder: "metals-open-folder",
   /**
diff --git a/src/interfaces/MetalsInitializationOptions.ts b/src/interfaces/MetalsInitializationOptions.ts
index ac7ec1e..4c3b723 100644
--- a/src/interfaces/MetalsInitializationOptions.ts
+++ b/src/interfaces/MetalsInitializationOptions.ts
@@ -22,6 +22,7 @@ export interface MetalsInitializationOptions {
   icons?: "vscode" | "octicons" | "atom" | "unicode";
   inputBoxProvider?: boolean;
   isVirtualDocumentSupported?: boolean;
+  isLibraryFileSystemSupported?: boolean;
   isExitOnShutdown?: boolean;
   isHttpEnabled?: boolean;
   openFilesOnRenameProvider?: boolean;
diff --git a/src/interfaces/ServerCommands.ts b/src/interfaces/ServerCommands.ts
index 7347578..f61a618 100644
--- a/src/interfaces/ServerCommands.ts
+++ b/src/interfaces/ServerCommands.ts
@@ -68,6 +68,12 @@ export const ServerCommands = {
   DecodeFile: "file-decode",
   /** Retrieve a list of all build targets */
   ListBuildTargets: "list-build-targets",
+  /** Retrieve file system information on the uri passed e.g. isFile, isDirectory */
+  FileSystemStat: "filesystem-stat",
+  /** Retrieve file directory contents */
+  FileSystemReadDirectory: "filesystem-read-directory",
+  /** Retrieve file contents */
+  FileSystemReadFile: "filesystem-read-file",
   /**
    * Detect the build tool for a workspace and generate the bsp config for the
    * build tool. If there are multiple build tools for a workspace ,the user