feat: basics

tools/folders.ts

@@ -0,0 +1,37 @@
+import { type McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { z } from "zod/v4";
+import { EwsClient, loadConfig } from "../ews_client.ts";
+
+export function registerFolderTools(server: McpServer): void {
+  server.registerTool(
+    "get_folders",
+    {
+      description: "List mail folders from the Exchange mailbox",
+      inputSchema: z.object({
+        parentFolderId: z.string().default("msgfolderroot").describe(
+          "Parent folder to list children of (default: msgfolderroot)",
+        ),
+        recursive: z.boolean().default(false).describe(
+          "If True, traverse all subfolders recursively",
+        ),
+      }),
+    },
+    async ({ parentFolderId, recursive }) => {
+      try {
+        const client = new EwsClient(loadConfig());
+        const folders = await client.findFolders(parentFolderId, recursive);
+
+        return {
+          content: [{ type: "text" as const, text: JSON.stringify(folders) }],
+        };
+      } catch (error: any) {
+        return {
+          content: [{
+            type: "text" as const,
+            text: JSON.stringify({ error: error.message ?? String(error) }),
+          }],
+        };
+      }
+    },
+  );
+}