diff --git a/apps/server/src/api/v2/slack/handler.ts b/apps/server/src/api/v2/slack/handler.ts
index be39afb7f..e02606b05 100644
--- a/apps/server/src/api/v2/slack/handler.ts
+++ b/apps/server/src/api/v2/slack/handler.ts
@@ -1,56 +1,18 @@
 import { getUserOrganizationId } from '@buster/database';
+import {
+  InitiateOAuthSchema,
+  OAuthCallbackSchema,
+  SlackError,
+  SlackErrorCodes,
+  UpdateIntegrationSchema,
+} from '@buster/server-shared/slack';
 import { SlackChannelService } from '@buster/slack';
 import type { Context } from 'hono';
 import { HTTPException } from 'hono/http-exception';
-import { z } from 'zod';
 import { getActiveIntegration, updateDefaultChannel } from './services/slack-helpers';
 import * as slackHelpers from './services/slack-helpers';
 import { type SlackOAuthService, createSlackOAuthService } from './services/slack-oauth-service';
 
-// Request schemas
-const InitiateOAuthSchema = z.object({
-  metadata: z
-    .object({
-      returnUrl: z.string().optional(),
-      source: z.string().optional(),
-      projectId: z.string().uuid().optional(),
-    })
-    .optional(),
-});
-
-const OAuthCallbackSchema = z.object({
-  code: z.string(),
-  state: z.string(),
-});
-
-const UpdateIntegrationSchema = z.object({
-  default_channel: z
-    .object({
-      name: z.string().min(1),
-      id: z.string().min(1),
-    })
-    .optional(),
-});
-
-// Custom error class
-export class SlackError extends Error {
-  constructor(
-    message: string,
-    public statusCode: 500 | 400 | 401 | 403 | 404 | 409 | 429 | 503 = 500,
-    public code?: string
-  ) {
-    super(message);
-    this.name = 'SlackError';
-  }
-
-  toResponse() {
-    return {
-      error: this.message,
-      code: this.code,
-    };
-  }
-}
-
 export class SlackHandler {
   private slackOAuthService: SlackOAuthService | null = null;
   private _initializationAttempted = false;
diff --git a/apps/server/src/api/v2/slack/index.ts b/apps/server/src/api/v2/slack/index.ts
index d8648f76a..915589b80 100644
--- a/apps/server/src/api/v2/slack/index.ts
+++ b/apps/server/src/api/v2/slack/index.ts
@@ -1,7 +1,8 @@
 import { Hono } from 'hono';
 import { HTTPException } from 'hono/http-exception';
 import { requireAuth } from '../../../middleware/auth';
-import { SlackError, slackHandler } from './handler';
+import { slackHandler } from './handler';
+import { SlackError } from '@buster/server-shared/slack';
 
 const app = new Hono()
   // Public endpoints (no auth required for OAuth flow)
diff --git a/packages/server-shared/package.json b/packages/server-shared/package.json
index 12432e822..6a867366f 100644
--- a/packages/server-shared/package.json
+++ b/packages/server-shared/package.json
@@ -34,6 +34,10 @@
     "./currency": {
       "types": "./dist/currency/index.d.ts",
       "default": "./dist/currency/index.js"
+    },
+    "./slack": {
+      "types": "./dist/slack/index.d.ts",
+      "default": "./dist/slack/index.js"
     }
   },
   "dependencies": {
diff --git a/packages/server-shared/src/slack/errors.types.ts b/packages/server-shared/src/slack/errors.types.ts
new file mode 100644
index 000000000..c37c89ea4
--- /dev/null
+++ b/packages/server-shared/src/slack/errors.types.ts
@@ -0,0 +1,37 @@
+// Custom error class for Slack integration errors
+export class SlackError extends Error {
+  constructor(
+    message: string,
+    public statusCode: 500 | 400 | 401 | 403 | 404 | 409 | 429 | 503 = 500,
+    public code?: string
+  ) {
+    super(message);
+    this.name = 'SlackError';
+  }
+
+  toResponse() {
+    return {
+      error: this.message,
+      code: this.code,
+    };
+  }
+}
+
+// Common error codes
+export const SlackErrorCodes = {
+  INTEGRATION_NOT_CONFIGURED: 'INTEGRATION_NOT_CONFIGURED',
+  INTEGRATION_DISABLED: 'INTEGRATION_DISABLED',
+  INTEGRATION_EXISTS: 'INTEGRATION_EXISTS',
+  INTEGRATION_NOT_FOUND: 'INTEGRATION_NOT_FOUND',
+  OAUTH_INIT_ERROR: 'OAUTH_INIT_ERROR',
+  GET_INTEGRATION_ERROR: 'GET_INTEGRATION_ERROR',
+  REMOVE_INTEGRATION_ERROR: 'REMOVE_INTEGRATION_ERROR',
+  UPDATE_DEFAULT_CHANNEL_ERROR: 'UPDATE_DEFAULT_CHANNEL_ERROR',
+  INVALID_REQUEST_BODY: 'INVALID_REQUEST_BODY',
+  TOKEN_RETRIEVAL_ERROR: 'TOKEN_RETRIEVAL_ERROR',
+  INVALID_TOKEN: 'INVALID_TOKEN',
+  RATE_LIMITED: 'RATE_LIMITED',
+  GET_CHANNELS_ERROR: 'GET_CHANNELS_ERROR',
+} as const;
+
+export type SlackErrorCode = (typeof SlackErrorCodes)[keyof typeof SlackErrorCodes];
diff --git a/packages/server-shared/src/slack/index.ts b/packages/server-shared/src/slack/index.ts
new file mode 100644
index 000000000..7621d93fd
--- /dev/null
+++ b/packages/server-shared/src/slack/index.ts
@@ -0,0 +1,11 @@
+// Export all request types and schemas
+export * from './requests.types';
+export type * from './requests.types';
+
+// Export all response types
+export * from './responses.types';
+export type * from './responses.types';
+
+// Export error types and classes
+export * from './errors.types';
+export type * from './errors.types';