diff --git a/src/types/index.ts b/src/types/index.ts
index 6069883..63d01d9 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -18,7 +18,9 @@ export type NodeType =
   | "dataInput"
   | "dataOutput"
   // Unified database connector
-  | "database";
+  | "database"
+  // Slack integration
+  | "slack";
 
 export type NodeStatus =
   | "idle"
diff --git a/src/types/slack.ts b/src/types/slack.ts
new file mode 100644
index 0000000..65e2828
--- /dev/null
+++ b/src/types/slack.ts
@@ -0,0 +1,75 @@
+export type SlackOperation =
+  | "message"
+  | "channel"
+  | "user"
+  | "file"
+  | "reaction"
+  | "reminder";
+
+export interface SlackConfig {
+  // Operation selection
+  operation: SlackOperation;
+
+  // Authentication
+  botToken: string;
+  appToken?: string; // For socket mode
+
+  // Message operation
+  channel?: string;
+  text?: string;
+  blocks?: any[];
+  attachments?: any[];
+  threadTs?: string; // For replying to threads
+  replyBroadcast?: boolean;
+
+  // Channel operation
+  channelName?: string;
+  channelPurpose?: string;
+  channelTopic?: string;
+  isPrivate?: boolean;
+  inviteUsers?: string[];
+
+  // User operation
+  userId?: string;
+  userEmail?: string;
+  userPresence?: "auto" | "away";
+
+  // File operation
+  fileContent?: string;
+  fileName?: string;
+  fileType?: string;
+  fileTitle?: string;
+  fileComment?: string;
+
+  // Reaction operation
+  emoji?: string;
+  timestamp?: string;
+
+  // Reminder operation
+  reminderText?: string;
+  reminderTime?: string; // Unix timestamp or natural language
+  reminderUser?: string;
+
+  // Advanced options
+  parse?: "full" | "none";
+  linkNames?: boolean;
+  unfurlLinks?: boolean;
+  unfurlMedia?: boolean;
+  username?: string;
+  iconEmoji?: string;
+  iconUrl?: string;
+  asUser?: boolean;
+}
+
+export interface SlackResponse {
+  success: boolean;
+  data?: any;
+  error?: string;
+  metadata?: {
+    operation: SlackOperation;
+    channelId?: string;
+    messageTs?: string;
+    userId?: string;
+    executionTime?: number;
+  };
+}