remove comments

* feat(integrations): claude skills to add integrations, lemlist trigger + tools, remove test webhook url

* fix tests

* fix tools

* add more details to skill

* more details

* address greptile comments

apps/docs/content/docs/de/enterprise/index.mdx

@@ -70,6 +70,7 @@ Für selbst gehostete Bereitstellungen können Enterprise-Funktionen über Umgeb
 |----------|-------------|
 | `SSO_ENABLED`, `NEXT_PUBLIC_SSO_ENABLED` | Single Sign-On mit SAML/OIDC |
 | `CREDENTIAL_SETS_ENABLED`, `NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | Polling-Gruppen für E-Mail-Trigger |
+| `DISABLE_INVITATIONS`, `NEXT_PUBLIC_DISABLE_INVITATIONS` | Workspace-/Organisations-Einladungen global deaktivieren |
 
 <Callout type="warn">
   BYOK ist nur im gehosteten Sim Studio verfügbar. Selbst gehostete Deployments konfigurieren AI-Provider-Schlüssel direkt über Umgebungsvariablen.

apps/docs/content/docs/en/enterprise/index.mdx

@@ -17,7 +17,7 @@ Define permission groups to control what features and integrations team members
 
 - **Allowed Model Providers** - Restrict which AI providers users can access (OpenAI, Anthropic, Google, etc.)
 - **Allowed Blocks** - Control which workflow blocks are available
-- **Platform Settings** - Hide Knowledge Base, disable MCP tools, or disable custom tools
+- **Platform Settings** - Hide Knowledge Base, disable MCP tools, disable custom tools, or disable invitations
 
 ### Setup
 
@@ -68,6 +68,7 @@ For self-hosted deployments, enterprise features can be enabled via environment
 | `ACCESS_CONTROL_ENABLED`, `NEXT_PUBLIC_ACCESS_CONTROL_ENABLED` | Permission groups for access restrictions |
 | `SSO_ENABLED`, `NEXT_PUBLIC_SSO_ENABLED` | Single Sign-On with SAML/OIDC |
 | `CREDENTIAL_SETS_ENABLED`, `NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | Polling Groups for email triggers |
+| `DISABLE_INVITATIONS`, `NEXT_PUBLIC_DISABLE_INVITATIONS` | Globally disable workspace/organization invitations |
 
 ### Organization Management
 
@@ -87,6 +88,23 @@ curl -X POST https://your-instance/api/v1/admin/organizations/{orgId}/members \
   -d '{"userId": "user-id-here", "role": "admin"}'
 ```
 
+### Workspace Members
+
+When invitations are disabled, use the Admin API to manage workspace memberships directly:
+
+```bash
+# Add a user to a workspace
+curl -X POST https://your-instance/api/v1/admin/workspaces/{workspaceId}/members \
+  -H "x-admin-key: YOUR_ADMIN_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{"userId": "user-id-here", "permissions": "write"}'
+
+# Remove a user from a workspace
+curl -X DELETE "https://your-instance/api/v1/admin/workspaces/{workspaceId}/members?userId=user-id-here" \
+  -H "x-admin-key: YOUR_ADMIN_API_KEY"
+```
+
 ### Notes
 
 - Enabling `ACCESS_CONTROL_ENABLED` automatically enables organizations, as access control requires organization membership.
+- When `DISABLE_INVITATIONS` is set, users cannot send invitations. Use the Admin API to manage workspace and organization memberships instead.

apps/docs/content/docs/es/enterprise/index.mdx

@@ -70,6 +70,7 @@ Para implementaciones self-hosted, las funciones enterprise se pueden activar me
 |----------|-------------|
 | `SSO_ENABLED`, `NEXT_PUBLIC_SSO_ENABLED` | Inicio de sesión único con SAML/OIDC |
 | `CREDENTIAL_SETS_ENABLED`, `NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | Grupos de sondeo para activadores de correo electrónico |
+| `DISABLE_INVITATIONS`, `NEXT_PUBLIC_DISABLE_INVITATIONS` | Desactivar globalmente invitaciones a espacios de trabajo/organizaciones |
 
 <Callout type="warn">
   BYOK solo está disponible en Sim Studio alojado. Las implementaciones autoalojadas configuran las claves de proveedor de IA directamente a través de variables de entorno.

apps/docs/content/docs/fr/enterprise/index.mdx

@@ -70,6 +70,7 @@ Pour les déploiements auto-hébergés, les fonctionnalités entreprise peuvent
 |----------|-------------|
 | `SSO_ENABLED`, `NEXT_PUBLIC_SSO_ENABLED` | Authentification unique avec SAML/OIDC |
 | `CREDENTIAL_SETS_ENABLED`, `NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | Groupes de sondage pour les déclencheurs d'e-mail |
+| `DISABLE_INVITATIONS`, `NEXT_PUBLIC_DISABLE_INVITATIONS` | Désactiver globalement les invitations aux espaces de travail/organisations |
 
 <Callout type="warn">
   BYOK est uniquement disponible sur Sim Studio hébergé. Les déploiements auto-hébergés configurent les clés de fournisseur d'IA directement via les variables d'environnement.

apps/docs/content/docs/ja/enterprise/index.mdx

@@ -69,6 +69,7 @@ Sim Studioのホストキーの代わりに、AIモデルプロバイダー用
 |----------|-------------|
 | `SSO_ENABLED`、`NEXT_PUBLIC_SSO_ENABLED` | SAML/OIDCによるシングルサインオン |
 | `CREDENTIAL_SETS_ENABLED`、`NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | メールトリガー用のポーリンググループ |
+| `DISABLE_INVITATIONS`、`NEXT_PUBLIC_DISABLE_INVITATIONS` | ワークスペース/組織への招待をグローバルに無効化 |
 
 <Callout type="warn">
   BYOKはホスト型Sim Studioでのみ利用可能です。セルフホスト型デプロイメントでは、環境変数を介してAIプロバイダーキーを直接設定します。

apps/docs/content/docs/zh/enterprise/index.mdx

@@ -69,6 +69,7 @@ Sim Studio 企业版为需要更高安全性、合规性和管理能力的组织
 |----------|-------------|
 | `SSO_ENABLED`，`NEXT_PUBLIC_SSO_ENABLED` | 使用 SAML/OIDC 的单点登录 |
 | `CREDENTIAL_SETS_ENABLED`，`NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED` | 用于邮件触发器的轮询组 |
+| `DISABLE_INVITATIONS`，`NEXT_PUBLIC_DISABLE_INVITATIONS` | 全局禁用工作区/组织邀请 |
 
 <Callout type="warn">
   BYOK 仅适用于托管版 Sim Studio。自托管部署需通过环境变量直接配置 AI 提供商密钥。

apps/sim/app/api/organizations/[id]/invitations/route.ts

@@ -26,6 +26,10 @@ import { getBaseUrl } from '@/lib/core/utils/urls'
 import { sendEmail } from '@/lib/messaging/email/mailer'
 import { quickValidateEmail } from '@/lib/messaging/email/validation'
 import { hasWorkspaceAdminAccess } from '@/lib/workspaces/permissions/utils'
+import {
+  InvitationsNotAllowedError,
+  validateInvitationsAllowed,
+} from '@/executor/utils/permission-check'
 
 const logger = createLogger('OrganizationInvitations')
 
@@ -116,6 +120,8 @@ export async function POST(request: NextRequest, { params }: { params: Promise<{
       return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
     }
 
+    await validateInvitationsAllowed(session.user.id)
+
     const { id: organizationId } = await params
     const url = new URL(request.url)
     const validateOnly = url.searchParams.get('validate') === 'true'
@@ -427,6 +433,10 @@ export async function POST(request: NextRequest, { params }: { params: Promise<{
       },
     })
   } catch (error) {
+    if (error instanceof InvitationsNotAllowedError) {
+      return NextResponse.json({ error: error.message }, { status: 403 })
+    }
+
     logger.error('Failed to create organization invitations', {
       organizationId: (await params).id,
       error,
@@ -486,10 +496,7 @@ export async function DELETE(
         and(
           eq(invitation.id, invitationId),
           eq(invitation.organizationId, organizationId),
-          or(
-            eq(invitation.status, 'pending'),
-            eq(invitation.status, 'rejected') // Allow cancelling rejected invitations too
-          )
+          or(eq(invitation.status, 'pending'), eq(invitation.status, 'rejected'))
         )
       )
       .returning()

apps/sim/app/api/v1/admin/index.ts

@@ -17,6 +17,12 @@
  *   Workspaces:
  *   GET    /api/v1/admin/workspaces                         - List all workspaces
  *   GET    /api/v1/admin/workspaces/:id                     - Get workspace details
+ *   GET    /api/v1/admin/workspaces/:id/members             - List workspace members
+ *   POST   /api/v1/admin/workspaces/:id/members             - Add/update workspace member
+ *   DELETE /api/v1/admin/workspaces/:id/members?userId=X    - Remove workspace member
+ *   GET    /api/v1/admin/workspaces/:id/members/:mid        - Get workspace member details
+ *   PATCH  /api/v1/admin/workspaces/:id/members/:mid        - Update workspace member permissions
+ *   DELETE /api/v1/admin/workspaces/:id/members/:mid        - Remove workspace member by ID
  *   GET    /api/v1/admin/workspaces/:id/workflows           - List workspace workflows
  *   DELETE /api/v1/admin/workspaces/:id/workflows           - Delete all workspace workflows
  *   GET    /api/v1/admin/workspaces/:id/folders             - List workspace folders
@@ -95,6 +101,7 @@ export type {
   AdminWorkflowDetail,
   AdminWorkspace,
   AdminWorkspaceDetail,
+  AdminWorkspaceMember,
   DbMember,
   DbOrganization,
   DbSubscription,

apps/sim/app/api/v1/admin/types.ts

@@ -518,6 +518,22 @@ export interface AdminMemberDetail extends AdminMember {
   billingBlocked: boolean
 }
 
+// =============================================================================
+// Workspace Member Types
+// =============================================================================
+
+export interface AdminWorkspaceMember {
+  id: string
+  workspaceId: string
+  userId: string
+  permissions: 'admin' | 'write' | 'read'
+  createdAt: string
+  updatedAt: string
+  userName: string
+  userEmail: string
+  userImage: string | null
+}
+
 // =============================================================================
 // User Billing Types
 // =============================================================================

apps/sim/app/api/v1/admin/workspaces/[id]/members/[memberId]/route.ts

@@ -0,0 +1,232 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]/members/[memberId]
+ *
+ * Get workspace member details.
+ *
+ * Response: AdminSingleResponse<AdminWorkspaceMember>
+ *
+ * PATCH /api/v1/admin/workspaces/[id]/members/[memberId]
+ *
+ * Update member permissions.
+ *
+ * Body:
+ *   - permissions: 'admin' | 'write' | 'read' - New permission level
+ *
+ * Response: AdminSingleResponse<AdminWorkspaceMember>
+ *
+ * DELETE /api/v1/admin/workspaces/[id]/members/[memberId]
+ *
+ * Remove member from workspace.
+ *
+ * Response: AdminSingleResponse<{ removed: true, memberId: string, userId: string }>
+ */
+
+import { db } from '@sim/db'
+import { permissions, user, workspace } from '@sim/db/schema'
+import { createLogger } from '@sim/logger'
+import { and, eq } from 'drizzle-orm'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  badRequestResponse,
+  internalErrorResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import type { AdminWorkspaceMember } from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceMemberDetailAPI')
+
+interface RouteParams {
+  id: string
+  memberId: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (_, context) => {
+  const { id: workspaceId, memberId } = await context.params
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [memberData] = await db
+      .select({
+        id: permissions.id,
+        userId: permissions.userId,
+        permissionType: permissions.permissionType,
+        createdAt: permissions.createdAt,
+        updatedAt: permissions.updatedAt,
+        userName: user.name,
+        userEmail: user.email,
+        userImage: user.image,
+      })
+      .from(permissions)
+      .innerJoin(user, eq(permissions.userId, user.id))
+      .where(
+        and(
+          eq(permissions.id, memberId),
+          eq(permissions.entityType, 'workspace'),
+          eq(permissions.entityId, workspaceId)
+        )
+      )
+      .limit(1)
+
+    if (!memberData) {
+      return notFoundResponse('Workspace member')
+    }
+
+    const data: AdminWorkspaceMember = {
+      id: memberData.id,
+      workspaceId,
+      userId: memberData.userId,
+      permissions: memberData.permissionType,
+      createdAt: memberData.createdAt.toISOString(),
+      updatedAt: memberData.updatedAt.toISOString(),
+      userName: memberData.userName,
+      userEmail: memberData.userEmail,
+      userImage: memberData.userImage,
+    }
+
+    logger.info(`Admin API: Retrieved member ${memberId} from workspace ${workspaceId}`)
+
+    return singleResponse(data)
+  } catch (error) {
+    logger.error('Admin API: Failed to get workspace member', { error, workspaceId, memberId })
+    return internalErrorResponse('Failed to get workspace member')
+  }
+})
+
+export const PATCH = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId, memberId } = await context.params
+
+  try {
+    const body = await request.json()
+
+    if (!body.permissions || !['admin', 'write', 'read'].includes(body.permissions)) {
+      return badRequestResponse('permissions must be "admin", "write", or "read"')
+    }
+
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [existingMember] = await db
+      .select({
+        id: permissions.id,
+        userId: permissions.userId,
+        permissionType: permissions.permissionType,
+        createdAt: permissions.createdAt,
+      })
+      .from(permissions)
+      .where(
+        and(
+          eq(permissions.id, memberId),
+          eq(permissions.entityType, 'workspace'),
+          eq(permissions.entityId, workspaceId)
+        )
+      )
+      .limit(1)
+
+    if (!existingMember) {
+      return notFoundResponse('Workspace member')
+    }
+
+    const now = new Date()
+
+    await db
+      .update(permissions)
+      .set({ permissionType: body.permissions, updatedAt: now })
+      .where(eq(permissions.id, memberId))
+
+    const [userData] = await db
+      .select({ name: user.name, email: user.email, image: user.image })
+      .from(user)
+      .where(eq(user.id, existingMember.userId))
+      .limit(1)
+
+    const data: AdminWorkspaceMember = {
+      id: existingMember.id,
+      workspaceId,
+      userId: existingMember.userId,
+      permissions: body.permissions,
+      createdAt: existingMember.createdAt.toISOString(),
+      updatedAt: now.toISOString(),
+      userName: userData?.name ?? '',
+      userEmail: userData?.email ?? '',
+      userImage: userData?.image ?? null,
+    }
+
+    logger.info(`Admin API: Updated member ${memberId} permissions to ${body.permissions}`, {
+      workspaceId,
+      previousPermissions: existingMember.permissionType,
+    })
+
+    return singleResponse(data)
+  } catch (error) {
+    logger.error('Admin API: Failed to update workspace member', { error, workspaceId, memberId })
+    return internalErrorResponse('Failed to update workspace member')
+  }
+})
+
+export const DELETE = withAdminAuthParams<RouteParams>(async (_, context) => {
+  const { id: workspaceId, memberId } = await context.params
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [existingMember] = await db
+      .select({
+        id: permissions.id,
+        userId: permissions.userId,
+      })
+      .from(permissions)
+      .where(
+        and(
+          eq(permissions.id, memberId),
+          eq(permissions.entityType, 'workspace'),
+          eq(permissions.entityId, workspaceId)
+        )
+      )
+      .limit(1)
+
+    if (!existingMember) {
+      return notFoundResponse('Workspace member')
+    }
+
+    await db.delete(permissions).where(eq(permissions.id, memberId))
+
+    logger.info(`Admin API: Removed member ${memberId} from workspace ${workspaceId}`, {
+      userId: existingMember.userId,
+    })
+
+    return singleResponse({
+      removed: true,
+      memberId,
+      userId: existingMember.userId,
+      workspaceId,
+    })
+  } catch (error) {
+    logger.error('Admin API: Failed to remove workspace member', { error, workspaceId, memberId })
+    return internalErrorResponse('Failed to remove workspace member')
+  }
+})

apps/sim/app/api/v1/admin/workspaces/[id]/members/route.ts

@@ -0,0 +1,298 @@
+/**
+ * GET /api/v1/admin/workspaces/[id]/members
+ *
+ * List all members of a workspace with their permission details.
+ *
+ * Query Parameters:
+ *   - limit: number (default: 50, max: 250)
+ *   - offset: number (default: 0)
+ *
+ * Response: AdminListResponse<AdminWorkspaceMember>
+ *
+ * POST /api/v1/admin/workspaces/[id]/members
+ *
+ * Add a user to a workspace with a specific permission level.
+ * If the user already has permissions, updates their permission level.
+ *
+ * Body:
+ *   - userId: string - User ID to add
+ *   - permissions: 'admin' | 'write' | 'read' - Permission level
+ *
+ * Response: AdminSingleResponse<AdminWorkspaceMember & { action: 'created' | 'updated' }>
+ *
+ * DELETE /api/v1/admin/workspaces/[id]/members
+ *
+ * Remove a user from a workspace.
+ *
+ * Query Parameters:
+ *   - userId: string - User ID to remove
+ *
+ * Response: AdminSingleResponse<{ removed: true }>
+ */
+
+import crypto from 'crypto'
+import { db } from '@sim/db'
+import { permissions, user, workspace } from '@sim/db/schema'
+import { createLogger } from '@sim/logger'
+import { and, count, eq } from 'drizzle-orm'
+import { withAdminAuthParams } from '@/app/api/v1/admin/middleware'
+import {
+  badRequestResponse,
+  internalErrorResponse,
+  listResponse,
+  notFoundResponse,
+  singleResponse,
+} from '@/app/api/v1/admin/responses'
+import {
+  type AdminWorkspaceMember,
+  createPaginationMeta,
+  parsePaginationParams,
+} from '@/app/api/v1/admin/types'
+
+const logger = createLogger('AdminWorkspaceMembersAPI')
+
+interface RouteParams {
+  id: string
+}
+
+export const GET = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const { limit, offset } = parsePaginationParams(url)
+
+  try {
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [countResult, membersData] = await Promise.all([
+      db
+        .select({ count: count() })
+        .from(permissions)
+        .where(and(eq(permissions.entityType, 'workspace'), eq(permissions.entityId, workspaceId))),
+      db
+        .select({
+          id: permissions.id,
+          userId: permissions.userId,
+          permissionType: permissions.permissionType,
+          createdAt: permissions.createdAt,
+          updatedAt: permissions.updatedAt,
+          userName: user.name,
+          userEmail: user.email,
+          userImage: user.image,
+        })
+        .from(permissions)
+        .innerJoin(user, eq(permissions.userId, user.id))
+        .where(and(eq(permissions.entityType, 'workspace'), eq(permissions.entityId, workspaceId)))
+        .orderBy(permissions.createdAt)
+        .limit(limit)
+        .offset(offset),
+    ])
+
+    const total = countResult[0].count
+    const data: AdminWorkspaceMember[] = membersData.map((m) => ({
+      id: m.id,
+      workspaceId,
+      userId: m.userId,
+      permissions: m.permissionType,
+      createdAt: m.createdAt.toISOString(),
+      updatedAt: m.updatedAt.toISOString(),
+      userName: m.userName,
+      userEmail: m.userEmail,
+      userImage: m.userImage,
+    }))
+
+    const pagination = createPaginationMeta(total, limit, offset)
+
+    logger.info(`Admin API: Listed ${data.length} members for workspace ${workspaceId}`)
+
+    return listResponse(data, pagination)
+  } catch (error) {
+    logger.error('Admin API: Failed to list workspace members', { error, workspaceId })
+    return internalErrorResponse('Failed to list workspace members')
+  }
+})
+
+export const POST = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+
+  try {
+    const body = await request.json()
+
+    if (!body.userId || typeof body.userId !== 'string') {
+      return badRequestResponse('userId is required')
+    }
+
+    if (!body.permissions || !['admin', 'write', 'read'].includes(body.permissions)) {
+      return badRequestResponse('permissions must be "admin", "write", or "read"')
+    }
+
+    const [workspaceData] = await db
+      .select({ id: workspace.id, name: workspace.name })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [userData] = await db
+      .select({ id: user.id, name: user.name, email: user.email, image: user.image })
+      .from(user)
+      .where(eq(user.id, body.userId))
+      .limit(1)
+
+    if (!userData) {
+      return notFoundResponse('User')
+    }
+
+    const [existingPermission] = await db
+      .select({
+        id: permissions.id,
+        permissionType: permissions.permissionType,
+        createdAt: permissions.createdAt,
+        updatedAt: permissions.updatedAt,
+      })
+      .from(permissions)
+      .where(
+        and(
+          eq(permissions.userId, body.userId),
+          eq(permissions.entityType, 'workspace'),
+          eq(permissions.entityId, workspaceId)
+        )
+      )
+      .limit(1)
+
+    if (existingPermission) {
+      if (existingPermission.permissionType !== body.permissions) {
+        const now = new Date()
+        await db
+          .update(permissions)
+          .set({ permissionType: body.permissions, updatedAt: now })
+          .where(eq(permissions.id, existingPermission.id))
+
+        logger.info(
+          `Admin API: Updated user ${body.userId} permissions in workspace ${workspaceId}`,
+          {
+            previousPermissions: existingPermission.permissionType,
+            newPermissions: body.permissions,
+          }
+        )
+
+        return singleResponse({
+          id: existingPermission.id,
+          workspaceId,
+          userId: body.userId,
+          permissions: body.permissions as 'admin' | 'write' | 'read',
+          createdAt: existingPermission.createdAt.toISOString(),
+          updatedAt: now.toISOString(),
+          userName: userData.name,
+          userEmail: userData.email,
+          userImage: userData.image,
+          action: 'updated' as const,
+        })
+      }
+
+      return singleResponse({
+        id: existingPermission.id,
+        workspaceId,
+        userId: body.userId,
+        permissions: existingPermission.permissionType,
+        createdAt: existingPermission.createdAt.toISOString(),
+        updatedAt: existingPermission.updatedAt.toISOString(),
+        userName: userData.name,
+        userEmail: userData.email,
+        userImage: userData.image,
+        action: 'already_member' as const,
+      })
+    }
+
+    const now = new Date()
+    const permissionId = crypto.randomUUID()
+
+    await db.insert(permissions).values({
+      id: permissionId,
+      userId: body.userId,
+      entityType: 'workspace',
+      entityId: workspaceId,
+      permissionType: body.permissions,
+      createdAt: now,
+      updatedAt: now,
+    })
+
+    logger.info(`Admin API: Added user ${body.userId} to workspace ${workspaceId}`, {
+      permissions: body.permissions,
+      permissionId,
+    })
+
+    return singleResponse({
+      id: permissionId,
+      workspaceId,
+      userId: body.userId,
+      permissions: body.permissions as 'admin' | 'write' | 'read',
+      createdAt: now.toISOString(),
+      updatedAt: now.toISOString(),
+      userName: userData.name,
+      userEmail: userData.email,
+      userImage: userData.image,
+      action: 'created' as const,
+    })
+  } catch (error) {
+    logger.error('Admin API: Failed to add workspace member', { error, workspaceId })
+    return internalErrorResponse('Failed to add workspace member')
+  }
+})
+
+export const DELETE = withAdminAuthParams<RouteParams>(async (request, context) => {
+  const { id: workspaceId } = await context.params
+  const url = new URL(request.url)
+  const userId = url.searchParams.get('userId')
+
+  try {
+    if (!userId) {
+      return badRequestResponse('userId query parameter is required')
+    }
+
+    const [workspaceData] = await db
+      .select({ id: workspace.id })
+      .from(workspace)
+      .where(eq(workspace.id, workspaceId))
+      .limit(1)
+
+    if (!workspaceData) {
+      return notFoundResponse('Workspace')
+    }
+
+    const [existingPermission] = await db
+      .select({ id: permissions.id })
+      .from(permissions)
+      .where(
+        and(
+          eq(permissions.userId, userId),
+          eq(permissions.entityType, 'workspace'),
+          eq(permissions.entityId, workspaceId)
+        )
+      )
+      .limit(1)
+
+    if (!existingPermission) {
+      return notFoundResponse('Workspace member')
+    }
+
+    await db.delete(permissions).where(eq(permissions.id, existingPermission.id))
+
+    logger.info(`Admin API: Removed user ${userId} from workspace ${workspaceId}`)
+
+    return singleResponse({ removed: true, userId, workspaceId })
+  } catch (error) {
+    logger.error('Admin API: Failed to remove workspace member', { error, workspaceId, userId })
+    return internalErrorResponse('Failed to remove workspace member')
+  }
+})

apps/sim/app/api/workspaces/invitations/route.test.ts

@@ -101,6 +101,16 @@ describe('Workspace Invitations API Route', () => {
       eq: vi.fn().mockImplementation((field, value) => ({ type: 'eq', field, value })),
       inArray: vi.fn().mockImplementation((field, values) => ({ type: 'inArray', field, values })),
     }))
+
+    vi.doMock('@/executor/utils/permission-check', () => ({
+      validateInvitationsAllowed: vi.fn().mockResolvedValue(undefined),
+      InvitationsNotAllowedError: class InvitationsNotAllowedError extends Error {
+        constructor() {
+          super('Invitations are not allowed based on your permission group settings')
+          this.name = 'InvitationsNotAllowedError'
+        }
+      },
+    }))
   })
 
   describe('GET /api/workspaces/invitations', () => {

apps/sim/app/api/workspaces/invitations/route.ts

@@ -18,6 +18,10 @@ import { PlatformEvents } from '@/lib/core/telemetry'
 import { getBaseUrl } from '@/lib/core/utils/urls'
 import { sendEmail } from '@/lib/messaging/email/mailer'
 import { getFromEmailAddress } from '@/lib/messaging/email/utils'
+import {
+  InvitationsNotAllowedError,
+  validateInvitationsAllowed,
+} from '@/executor/utils/permission-check'
 
 export const dynamic = 'force-dynamic'
 
@@ -76,6 +80,8 @@ export async function POST(req: NextRequest) {
   }
 
   try {
+    await validateInvitationsAllowed(session.user.id)
+
     const { workspaceId, email, role = 'member', permission = 'read' } = await req.json()
 
     if (!workspaceId || !email) {
@@ -213,6 +219,9 @@ export async function POST(req: NextRequest) {
 
     return NextResponse.json({ success: true, invitation: invitationData })
   } catch (error) {
+    if (error instanceof InvitationsNotAllowedError) {
+      return NextResponse.json({ error: error.message }, { status: 403 })
+    }
     logger.error('Error creating workspace invitation:', error)
     return NextResponse.json({ error: 'Failed to create invitation' }, { status: 500 })
   }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/context-menu/pane-context-menu.tsx

@@ -34,6 +34,7 @@ export function PaneContextMenu({
   disableAdmin = false,
   canUndo = false,
   canRedo = false,
+  isInvitationsDisabled = false,
 }: PaneContextMenuProps) {
   return (
     <Popover
@@ -142,17 +143,21 @@ export function PaneContextMenu({
           {isChatOpen ? 'Close Chat' : 'Open Chat'}
         </PopoverItem>
 
-        {/* Admin action */}
-        <PopoverDivider />
-        <PopoverItem
-          disabled={disableAdmin}
-          onClick={() => {
-            onInvite()
-            onClose()
-          }}
-        >
-          Invite to Workspace
-        </PopoverItem>
+        {/* Admin action - hidden when invitations are disabled */}
+        {!isInvitationsDisabled && (
+          <>
+            <PopoverDivider />
+            <PopoverItem
+              disabled={disableAdmin}
+              onClick={() => {
+                onInvite()
+                onClose()
+              }}
+            >
+              Invite to Workspace
+            </PopoverItem>
+          </>
+        )}
       </PopoverContent>
     </Popover>
   )

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/context-menu/types.ts

@@ -94,4 +94,6 @@ export interface PaneContextMenuProps {
   canUndo?: boolean
   /** Whether redo is available */
   canRedo?: boolean
+  /** Whether invitations are disabled (feature flag or permission group) */
+  isInvitationsDisabled?: boolean
 }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/workflow.tsx

@@ -64,6 +64,7 @@ import { getBlock } from '@/blocks'
 import { isAnnotationOnlyBlock } from '@/executor/constants'
 import { useWorkspaceEnvironment } from '@/hooks/queries/environment'
 import { useCollaborativeWorkflow } from '@/hooks/use-collaborative-workflow'
+import { usePermissionConfig } from '@/hooks/use-permission-config'
 import { useStreamCleanup } from '@/hooks/use-stream-cleanup'
 import { useChatStore } from '@/stores/chat/store'
 import { useCopilotTrainingStore } from '@/stores/copilot-training/store'
@@ -281,6 +282,9 @@ const WorkflowContent = React.memo(() => {
   // Panel open states for context menu
   const isVariablesOpen = useVariablesStore((state) => state.isOpen)
   const isChatOpen = useChatStore((state) => state.isChatOpen)
+
+  // Permission config for invitation control
+  const { isInvitationsDisabled } = usePermissionConfig()
   const snapGrid: [number, number] = useMemo(
     () => [snapToGridSize, snapToGridSize],
     [snapToGridSize]
@@ -3426,6 +3430,7 @@ const WorkflowContent = React.memo(() => {
               disableAdmin={!effectivePermissions.canAdmin}
               canUndo={canUndo}
               canRedo={canRedo}
+              isInvitationsDisabled={isInvitationsDisabled}
             />
           </>
         )}

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/access-control/access-control.tsx

@@ -342,6 +342,12 @@ export function AccessControl() {
         category: 'Logs',
         configKey: 'hideTraceSpans' as const,
       },
+      {
+        id: 'disable-invitations',
+        label: 'Invitations',
+        category: 'Collaboration',
+        configKey: 'disableInvitations' as const,
+      },
     ],
     []
   )
@@ -869,7 +875,8 @@ export function AccessControl() {
                             !editingConfig?.hideFilesTab &&
                             !editingConfig?.disableMcpTools &&
                             !editingConfig?.disableCustomTools &&
-                            !editingConfig?.hideTraceSpans
+                            !editingConfig?.hideTraceSpans &&
+                            !editingConfig?.disableInvitations
                           setEditingConfig((prev) =>
                             prev
                               ? {
@@ -883,6 +890,7 @@ export function AccessControl() {
                                   disableMcpTools: allVisible,
                                   disableCustomTools: allVisible,
                                   hideTraceSpans: allVisible,
+                                  disableInvitations: allVisible,
                                 }
                               : prev
                           )
@@ -896,7 +904,8 @@ export function AccessControl() {
                         !editingConfig?.hideFilesTab &&
                         !editingConfig?.disableMcpTools &&
                         !editingConfig?.disableCustomTools &&
-                        !editingConfig?.hideTraceSpans
+                        !editingConfig?.hideTraceSpans &&
+                        !editingConfig?.disableInvitations
                           ? 'Deselect All'
                           : 'Select All'}
                       </Button>

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/settings-modal/components/team-management/team-management.tsx

@@ -33,11 +33,13 @@ import {
 } from '@/hooks/queries/organization'
 import { useSubscriptionData } from '@/hooks/queries/subscription'
 import { useAdminWorkspaces } from '@/hooks/queries/workspace'
+import { usePermissionConfig } from '@/hooks/use-permission-config'
 
 const logger = createLogger('TeamManagement')
 
 export function TeamManagement() {
   const { data: session } = useSession()
+  const { isInvitationsDisabled } = usePermissionConfig()
 
   const { data: organizationsData } = useOrganizations()
   const activeOrganization = organizationsData?.activeOrganization
@@ -385,8 +387,8 @@ export function TeamManagement() {
         </div>
       )}
 
-      {/* Action: Invite New Members */}
-      {adminOrOwner && (
+      {/* Action: Invite New Members - hidden when invitations are disabled */}
+      {adminOrOwner && !isInvitationsDisabled && (
         <div>
           <MemberInvitationCard
             inviteEmail={inviteEmail}

apps/sim/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/workspace-header.tsx

@@ -18,6 +18,7 @@ import {
 import { ContextMenu } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/context-menu/context-menu'
 import { DeleteModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/workflow-list/components/delete-modal/delete-modal'
 import { InviteModal } from '@/app/workspace/[workspaceId]/w/components/sidebar/components/workspace-header/components/invite-modal'
+import { usePermissionConfig } from '@/hooks/use-permission-config'
 
 const logger = createLogger('WorkspaceHeader')
 
@@ -151,12 +152,18 @@ export function WorkspaceHeader({
     setIsMounted(true)
   }, [])
 
+  const { isInvitationsDisabled } = usePermissionConfig()
+
   // Listen for open-invite-modal event from context menu
   useEffect(() => {
-    const handleOpenInvite = () => setIsInviteModalOpen(true)
+    const handleOpenInvite = () => {
+      if (!isInvitationsDisabled) {
+        setIsInviteModalOpen(true)
+      }
+    }
     window.addEventListener('open-invite-modal', handleOpenInvite)
     return () => window.removeEventListener('open-invite-modal', handleOpenInvite)
-  }, [])
+  }, [isInvitationsDisabled])
 
   /**
    * Focus the inline list rename input when it becomes active
@@ -458,8 +465,8 @@ export function WorkspaceHeader({
       </div>
       {/* Workspace Actions */}
       <div className='flex flex-shrink-0 items-center gap-[10px]'>
-        {/* Invite - hidden in collapsed mode */}
-        {!isCollapsed && (
+        {/* Invite - hidden in collapsed mode or when invitations are disabled */}
+        {!isCollapsed && !isInvitationsDisabled && (
           <Badge className='cursor-pointer' onClick={() => setIsInviteModalOpen(true)}>
             Invite
           </Badge>

apps/sim/executor/utils/permission-check.ts

@@ -42,6 +42,13 @@ export class CustomToolsNotAllowedError extends Error {
   }
 }
 
+export class InvitationsNotAllowedError extends Error {
+  constructor() {
+    super('Invitations are not allowed based on your permission group settings')
+    this.name = 'InvitationsNotAllowedError'
+  }
+}
+
 export async function getUserPermissionConfig(
   userId: string
 ): Promise<PermissionGroupConfig | null> {
@@ -184,3 +191,30 @@ export async function validateCustomToolsAllowed(
     throw new CustomToolsNotAllowedError()
   }
 }
+
+/**
+ * Validates if the user is allowed to send invitations.
+ * Also checks the global feature flag.
+ */
+export async function validateInvitationsAllowed(userId: string | undefined): Promise<void> {
+  const { isInvitationsDisabled } = await import('@/lib/core/config/feature-flags')
+  if (isInvitationsDisabled) {
+    logger.warn('Invitations blocked by feature flag')
+    throw new InvitationsNotAllowedError()
+  }
+
+  if (!userId) {
+    return
+  }
+
+  const config = await getUserPermissionConfig(userId)
+
+  if (!config) {
+    return
+  }
+
+  if (config.disableInvitations) {
+    logger.warn('Invitations blocked by permission group', { userId })
+    throw new InvitationsNotAllowedError()
+  }
+}

apps/sim/hooks/use-collaborative-workflow.ts

@@ -1088,25 +1088,28 @@ export function useCollaborativeWorkflow() {
         userId: session?.user?.id || 'unknown',
       })
 
+      const currentValue = subBlockStore.getValue(blockId, subblockId)
+      const valueActuallyChanged = currentValue !== value
+
       subBlockStore.setValue(blockId, subblockId, value)
 
-      try {
-        const visited = options?._visited || new Set<string>()
-        if (visited.has(subblockId)) return
-        visited.add(subblockId)
-        const blockType = useWorkflowStore.getState().blocks?.[blockId]?.type
-        const blockConfig = blockType ? getBlock(blockType) : null
-        if (blockConfig?.subBlocks && Array.isArray(blockConfig.subBlocks)) {
-          const dependents = blockConfig.subBlocks.filter(
-            (sb: any) => Array.isArray(sb.dependsOn) && sb.dependsOn.includes(subblockId)
-          )
-          for (const dep of dependents) {
-            if (!dep?.id || dep.id === subblockId) continue
-            collaborativeSetSubblockValue(blockId, dep.id, '', { _visited: visited })
+      if (valueActuallyChanged) {
+        try {
+          const visited = options?._visited || new Set<string>()
+          if (visited.has(subblockId)) return
+          visited.add(subblockId)
+          const blockType = useWorkflowStore.getState().blocks?.[blockId]?.type
+          const blockConfig = blockType ? getBlock(blockType) : null
+          if (blockConfig?.subBlocks && Array.isArray(blockConfig.subBlocks)) {
+            const dependents = blockConfig.subBlocks.filter(
+              (sb: any) => Array.isArray(sb.dependsOn) && sb.dependsOn.includes(subblockId)
+            )
+            for (const dep of dependents) {
+              if (!dep?.id || dep.id === subblockId) continue
+              collaborativeSetSubblockValue(blockId, dep.id, '', { _visited: visited })
+            }
           }
-        }
-      } catch {
-        // Best-effort; do not block on clearing
+        } catch {}
       }
     },
     [

apps/sim/hooks/use-permission-config.ts

@@ -1,4 +1,5 @@
 import { useMemo } from 'react'
+import { getEnv, isTruthy } from '@/lib/core/config/env'
 import {
   DEFAULT_PERMISSION_GROUP_CONFIG,
   type PermissionGroupConfig,
@@ -14,6 +15,7 @@ export interface PermissionConfigResult {
   filterProviders: (providerIds: string[]) => string[]
   isBlockAllowed: (blockType: string) => boolean
   isProviderAllowed: (providerId: string) => boolean
+  isInvitationsDisabled: boolean
 }
 
 export function usePermissionConfig(): PermissionConfigResult {
@@ -59,6 +61,11 @@ export function usePermissionConfig(): PermissionConfigResult {
     }
   }, [config.allowedModelProviders])
 
+  const isInvitationsDisabled = useMemo(() => {
+    const featureFlagDisabled = isTruthy(getEnv('NEXT_PUBLIC_DISABLE_INVITATIONS'))
+    return featureFlagDisabled || config.disableInvitations
+  }, [config.disableInvitations])
+
   return {
     config,
     isLoading,
@@ -67,5 +74,6 @@ export function usePermissionConfig(): PermissionConfigResult {
     filterProviders,
     isBlockAllowed,
     isProviderAllowed,
+    isInvitationsDisabled,
   }
 }

apps/sim/lib/core/config/env.ts

@@ -257,6 +257,9 @@ export const env = createEnv({
     // Organizations - for self-hosted deployments
     ORGANIZATIONS_ENABLED:                 z.boolean().optional(),                 // Enable organizations on self-hosted (bypasses plan requirements)
 
+    // Invitations - for self-hosted deployments
+    DISABLE_INVITATIONS:                   z.boolean().optional(),                 // Disable workspace invitations globally (for self-hosted deployments)
+
     // SSO Configuration (for script-based registration)
     SSO_ENABLED:                           z.boolean().optional(),                 // Enable SSO functionality
     SSO_PROVIDER_TYPE:                     z.enum(['oidc', 'saml']).optional(),    // [REQUIRED] SSO provider type
@@ -337,6 +340,7 @@ export const env = createEnv({
     NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED:   z.boolean().optional(),                 // Enable credential sets (email polling) on self-hosted
     NEXT_PUBLIC_ACCESS_CONTROL_ENABLED:    z.boolean().optional(),                 // Enable access control (permission groups) on self-hosted
     NEXT_PUBLIC_ORGANIZATIONS_ENABLED:     z.boolean().optional(),                 // Enable organizations on self-hosted (bypasses plan requirements)
+    NEXT_PUBLIC_DISABLE_INVITATIONS:       z.boolean().optional(),                 // Disable workspace invitations globally (for self-hosted deployments)
     NEXT_PUBLIC_EMAIL_PASSWORD_SIGNUP_ENABLED: z.boolean().optional().default(true), // Control visibility of email/password login forms
   },
 
@@ -368,6 +372,7 @@ export const env = createEnv({
     NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED: process.env.NEXT_PUBLIC_CREDENTIAL_SETS_ENABLED,
     NEXT_PUBLIC_ACCESS_CONTROL_ENABLED: process.env.NEXT_PUBLIC_ACCESS_CONTROL_ENABLED,
     NEXT_PUBLIC_ORGANIZATIONS_ENABLED: process.env.NEXT_PUBLIC_ORGANIZATIONS_ENABLED,
+    NEXT_PUBLIC_DISABLE_INVITATIONS: process.env.NEXT_PUBLIC_DISABLE_INVITATIONS,
     NEXT_PUBLIC_EMAIL_PASSWORD_SIGNUP_ENABLED: process.env.NEXT_PUBLIC_EMAIL_PASSWORD_SIGNUP_ENABLED,
     NEXT_PUBLIC_E2B_ENABLED: process.env.NEXT_PUBLIC_E2B_ENABLED,
     NEXT_PUBLIC_COPILOT_TRAINING_ENABLED: process.env.NEXT_PUBLIC_COPILOT_TRAINING_ENABLED,

apps/sim/lib/core/config/feature-flags.ts

@@ -103,6 +103,12 @@ export const isOrganizationsEnabled =
  */
 export const isE2bEnabled = isTruthy(env.E2B_ENABLED)
 
+/**
+ * Are invitations disabled globally
+ * When true, workspace invitations are disabled for all users
+ */
+export const isInvitationsDisabled = isTruthy(env.DISABLE_INVITATIONS)
+
 /**
  * Get cost multiplier based on environment
  */

apps/sim/lib/permission-groups/types.ts

@@ -11,6 +11,7 @@ export interface PermissionGroupConfig {
   disableMcpTools: boolean
   disableCustomTools: boolean
   hideTemplates: boolean
+  disableInvitations: boolean
 }
 
 export const DEFAULT_PERMISSION_GROUP_CONFIG: PermissionGroupConfig = {
@@ -25,6 +26,7 @@ export const DEFAULT_PERMISSION_GROUP_CONFIG: PermissionGroupConfig = {
   disableMcpTools: false,
   disableCustomTools: false,
   hideTemplates: false,
+  disableInvitations: false,
 }
 
 export function parsePermissionGroupConfig(config: unknown): PermissionGroupConfig {
@@ -47,5 +49,6 @@ export function parsePermissionGroupConfig(config: unknown): PermissionGroupConf
     disableMcpTools: typeof c.disableMcpTools === 'boolean' ? c.disableMcpTools : false,
     disableCustomTools: typeof c.disableCustomTools === 'boolean' ? c.disableCustomTools : false,
     hideTemplates: typeof c.hideTemplates === 'boolean' ? c.hideTemplates : false,
+    disableInvitations: typeof c.disableInvitations === 'boolean' ? c.disableInvitations : false,
   }
 }

helm/sim/values.yaml

@@ -147,6 +147,10 @@ app:
     BLACKLISTED_PROVIDERS: ""                            # Comma-separated provider IDs to hide from UI (e.g., "openai,anthropic,google")
     BLACKLISTED_MODELS: ""                               # Comma-separated model names/prefixes to hide (e.g., "gpt-4,claude-*")
 
+    # Invitation Control
+    DISABLE_INVITATIONS: ""                              # Set to "true" to disable workspace invitations globally
+    NEXT_PUBLIC_DISABLE_INVITATIONS: ""                  # Set to "true" to hide invitation UI elements
+
     # SSO Configuration (Enterprise Single Sign-On)
     # Set to "true" AFTER running the SSO registration script
     SSO_ENABLED: ""                                       # Enable SSO authentication ("true" to enable)