feat(server): add search messages handler and schema

- Implement searchMessagesHandler to search for messages in a Discord server.
- Add SearchMessagesSchema for input validation.
- Update toolList to include discord_search_messages tool.
- Modify transport and tools to handle new search messages functionality.

src/schemas.ts

@@ -131,4 +131,21 @@ export const DeleteWebhookSchema = z.object({
     reason: z.string().optional()
 });
 
-export const ListServersSchema = z.object({});
+export const ListServersSchema = z.object({});
+
+export const SearchMessagesSchema = z.object({
+  guildId: z.string().min(1, "guildId is required"),
+  // Optional filters
+  authorId: z.string().optional(),
+  mentions: z.string().optional(),
+  has: z.enum(['link','embed','file','poll','image','video','sound','sticker','snapshot']).optional(),
+  maxId: z.string().optional(),
+  minId: z.string().optional(),
+  channelId: z.string().optional(),
+  pinned: z.boolean().optional(),
+  authorType: z.enum(['user','bot','webhook']).optional(),
+  sortBy: z.enum(['timestamp','relevance']).optional(),
+  sortOrder: z.enum(['desc','asc']).optional(),
+  limit: z.number().min(1).max(100).default(25).optional(),
+  offset: z.number().min(0).default(0).optional()
+});

src/server.ts

@@ -30,7 +30,8 @@ import {
   createCategoryHandler,
   editCategoryHandler,
   deleteCategoryHandler,
-  listServersHandler
+  listServersHandler,
+  searchMessagesHandler
 } from './tools/tools.js';
 import { MCPTransport } from './transport.js';
 import { info, error } from './logger.js';
@@ -184,6 +185,11 @@ export class DiscordMCPServer {
             toolResponse = await listServersHandler(args, this.toolContext);
             return toolResponse;
 
+          case "discord_search_messages":
+            this.logClientState("before discord_search_messages handler");
+            toolResponse = await searchMessagesHandler(args, this.toolContext);
+            return toolResponse;
+
           default:
             throw new Error(`Unknown tool: ${name}`);
         }

src/toolList.ts

@@ -301,5 +301,28 @@ export const toolList = [
       properties: {},
       required: []
     }
+  },
+  {
+    name: "discord_search_messages",
+    description: "Searches for messages in a Discord server",
+    inputSchema: {
+      type: "object",
+      properties: {
+        guildId: { type: "string", description: "The ID of the Discord server (guild) to search within" },
+        authorId: { type: "string", description: "Filter messages by a specific user ID" },
+        mentions: { type: "string", description: "Filter messages that mention a specific user ID" },
+        has: { type: "string", description: "Filter messages that contain specific content types (e.g., link, embed, file, poll, image, video, sound, sticker, snapshot)" },
+        maxId: { type: "string", description: "Filter messages with IDs less than this value (messages before this ID)" },
+        minId: { type: "string", description: "Filter messages with IDs greater than this value (messages after this ID)" },
+        channelId: { type: "string", description: "Filter messages within a specific channel ID" },
+        pinned: { type: "boolean", description: "Filter messages based on whether they are pinned" },
+        authorType: { type: "string", description: "Filter messages by author type (user, bot, webhook)" },
+        sortBy: { type: "string", description: "Sort results by 'timestamp' or 'relevance'" },
+        sortOrder: { type: "string", description: "Sort order: 'desc' for descending or 'asc' for ascending" },
+        limit: { type: "number", description: "Maximum number of messages to return (default 25, max 100)" },
+        offset: { type: "number", description: "Number of messages to skip (for pagination)" }
+      },
+      required: ["guildId"]
+    }
   }
 ]; 

src/tools/server.ts

@@ -0,0 +1,53 @@
+import { handleDiscordError } from "../errorHandler.js";
+import { SearchMessagesSchema } from "../schemas.js";
+import { ToolContext, ToolResponse } from "./types.js";
+
+
+// Search server messages handler
+export async function searchMessagesHandler(
+  args: unknown,
+  context: ToolContext
+): Promise<ToolResponse> {
+  const { guildId, authorId, mentions, has, maxId, minId, channelId, pinned, authorType, sortBy, sortOrder, limit, offset } = SearchMessagesSchema.parse(args);
+  try {
+    if (!context.client.isReady()) {
+      return {
+        content: [{ type: "text", text: "Discord client not logged in." }],
+        isError: true
+      };
+    }
+
+    const guild = await context.client.guilds.fetch(guildId);
+    if (!guild) {
+      return {
+        content: [{ type: "text", text: `Cannot find guild with ID: ${guildId}` }],
+        isError: true
+      };
+    }
+
+    // Note: Discord.js does not support guild message search natively.
+    // This requires direct API calls or using a library that supports it.
+    // Here we will construct the API request using context.client.rest
+    const params = new URLSearchParams();
+    if (authorId) params.append('author_id', authorId);
+    if (mentions) params.append('mentions', mentions);
+    if (has) params.append('has', has);
+    if (maxId) params.append('max_id', maxId);
+    if (minId) params.append('min_id', minId);
+    if (channelId) params.append('channel_id', channelId);
+    if (typeof pinned === 'boolean') params.append('pinned', String(pinned));
+    if (authorType) params.append('author_type', authorType);
+    if (sortBy) params.append('sort_by', sortBy);
+    if (sortOrder) params.append('sort_order', sortOrder);
+    params.append('limit', String(limit || 25));
+    params.append('offset', String(offset || 0));
+
+    const response = await context.client.rest.get(`/guilds/${guildId}/messages/search?${params.toString()}`);
+
+    return {
+      content: [{ type: "text", text: JSON.stringify(response, null, 2) }]
+    };
+  } catch (error) {
+    return handleDiscordError(error);
+  }
+}

src/tools/tools.ts

@@ -20,6 +20,9 @@ import {
   deleteCategoryHandler,
   listServersHandler
 } from './channel.js';
+import {
+  searchMessagesHandler
+} from "./server.js";
 import {
   addReactionHandler,
   addMultipleReactionsHandler,
@@ -57,7 +60,8 @@ export {
   createCategoryHandler,
   editCategoryHandler,
   deleteCategoryHandler,
-  listServersHandler
+  listServersHandler,
+  searchMessagesHandler
 };
 
 // Export common types

src/transport.ts

@@ -27,7 +27,8 @@ import {
   editCategoryHandler,
   createCategoryHandler,
   deleteCategoryHandler,
-  listServersHandler
+  listServersHandler,
+  searchMessagesHandler   
 } from './tools/tools.js';
 import { Client, GatewayIntentBits } from "discord.js";
 import { info, error } from './logger.js';
@@ -215,6 +216,7 @@ export class StreamableHttpTransport implements MCPTransport {
                     case 'discord_edit_category':
                     case 'discord_delete_category':
                     case 'discord_list_servers':
+                    case 'discord_search_messages':
                         // Check if client is logged in
                         if (!this.toolContext!.client.isReady()) {
                             error(`Client not ready for method ${method}, client state: ${JSON.stringify({
@@ -338,8 +340,9 @@ export class StreamableHttpTransport implements MCPTransport {
                                 break;
                             case 'discord_list_servers':
                                 result = await listServersHandler(params, this.toolContext!);
-                                break;
-                                
+                            case 'discord_search_messages':
+                                result = await searchMessagesHandler(params, this.toolContext!);
+                                break;break;
                         }
                         break;
                         
@@ -507,6 +510,9 @@ export class StreamableHttpTransport implements MCPTransport {
                             case 'discord_list_servers':
                                 result = await listServersHandler(toolArgs, this.toolContext!);
                                 break;
+                            case 'discord_search_messages':
+                                result = await searchMessagesHandler(toolArgs, this.toolContext!);
+                                break;
                                 
                             default:
                                 return res.status(400).json({