diff --git a/src/app/api/automations/[id]/duplicate/route.ts b/src/app/api/automations/[id]/duplicate/route.ts
index 0b76852..401951b 100644
--- a/src/app/api/automations/[id]/duplicate/route.ts
+++ b/src/app/api/automations/[id]/duplicate/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/automations/admin-client'
 
 export async function POST(
@@ -7,6 +8,16 @@ export async function POST(
   { params }: { params: Promise<{ id: string }> },
 ) {
   const { id } = await params
+
+  // Duplicating creates a new automation row — a write. Enforce `agent`
+  // (the service-role client below bypasses the agent-gated
+  // automations_insert RLS).
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const supabase = await createClient()
   const {
     data: { user },
diff --git a/src/app/api/automations/[id]/route.ts b/src/app/api/automations/[id]/route.ts
index 5ca0ab9..6f3c53c 100644
--- a/src/app/api/automations/[id]/route.ts
+++ b/src/app/api/automations/[id]/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/automations/admin-client'
 import {
   loadStepsTree,
@@ -47,6 +48,16 @@ export async function PATCH(
   { params }: { params: Promise<{ id: string }> },
 ) {
   const { id } = await params
+
+  // Editing an automation is a write — the RLS automations_update policy
+  // requires `agent`, but this route mutates via the service-role client
+  // which bypasses RLS, so enforce the role here.
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const user = await requireUser()
   if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
 
@@ -125,6 +136,15 @@ export async function DELETE(
   { params }: { params: Promise<{ id: string }> },
 ) {
   const { id } = await params
+
+  // Deleting an automation is a write — enforce `agent` (the service-role
+  // client below bypasses the agent-gated automations_delete RLS).
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const user = await requireUser()
   if (!user) return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
 
diff --git a/src/app/api/automations/engine/route.ts b/src/app/api/automations/engine/route.ts
index a66e695..1590de4 100644
--- a/src/app/api/automations/engine/route.ts
+++ b/src/app/api/automations/engine/route.ts
@@ -1,5 +1,5 @@
 import { NextResponse } from 'next/server'
-import { getCurrentAccount, toErrorResponse } from '@/lib/auth/account'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { runAutomationsForTrigger } from '@/lib/automations/engine'
 import type { AutomationTriggerType } from '@/types'
 
@@ -9,9 +9,11 @@ import type { AutomationTriggerType } from '@/types'
  * account_id and dispatch over the account's automations.
  */
 export async function POST(request: Request) {
+  // Firing automations sends outbound WhatsApp — a write action. Require
+  // at least `agent`; a viewer must not be able to trigger sends.
   let accountId: string
   try {
-    const ctx = await getCurrentAccount()
+    const ctx = await requireRole('agent')
     accountId = ctx.accountId
   } catch (err) {
     return toErrorResponse(err)
diff --git a/src/app/api/automations/route.ts b/src/app/api/automations/route.ts
index d4c5dc4..7c21147 100644
--- a/src/app/api/automations/route.ts
+++ b/src/app/api/automations/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/automations/admin-client'
 import { getTemplate } from '@/lib/automations/templates'
 import { insertSteps, type BuilderStepInput } from '@/lib/automations/steps-tree'
@@ -24,6 +25,15 @@ export async function GET() {
 }
 
 export async function POST(request: Request) {
+  // Creating an automation is a write — the RLS automations_insert policy
+  // requires `agent`, but this route inserts via the service-role client
+  // which bypasses RLS, so the role must be enforced here.
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const supabase = await createClient()
   const {
     data: { user },
diff --git a/src/app/api/flows/[id]/activate/route.ts b/src/app/api/flows/[id]/activate/route.ts
index a2915c1..263addf 100644
--- a/src/app/api/flows/[id]/activate/route.ts
+++ b/src/app/api/flows/[id]/activate/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/flows/admin-client'
 import { validateFlowForActivation } from '@/lib/flows/validate'
 
@@ -23,6 +24,16 @@ export async function POST(
 ) {
   const { id } = await context.params
 
+  // Changing status (activate / draft / archive) is a write — the RLS
+  // flows_update policy requires `agent`, but the service-role client
+  // below bypasses RLS, so enforce the role here (a viewer passes the
+  // membership-only ownership check).
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const supabase = await createClient()
   const {
     data: { user },
diff --git a/src/app/api/flows/[id]/route.ts b/src/app/api/flows/[id]/route.ts
index 5119dca..52e3b6f 100644
--- a/src/app/api/flows/[id]/route.ts
+++ b/src/app/api/flows/[id]/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/flows/admin-client'
 
 /**
@@ -91,6 +92,16 @@ export async function PUT(
   context: { params: Promise<{ id: string }> },
 ) {
   const { id } = await context.params
+
+  // Writes require at least `agent` — the RLS flows_update policy demands
+  // it, but this route mutates via the service-role client which bypasses
+  // RLS, so the role must be enforced here (a viewer passes ownership).
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const guard = await requireOwnership(id)
   if (!guard.ok) return NextResponse.json(guard.body, { status: guard.status })
 
@@ -177,6 +188,15 @@ export async function DELETE(
   context: { params: Promise<{ id: string }> },
 ) {
   const { id } = await context.params
+
+  // Writes require at least `agent` — see the PUT handler note. The
+  // service-role client below bypasses the agent-gated flows_delete RLS.
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const guard = await requireOwnership(id)
   if (!guard.ok) return NextResponse.json(guard.body, { status: guard.status })
 
diff --git a/src/app/api/flows/route.ts b/src/app/api/flows/route.ts
index 94e7118..9fdac0d 100644
--- a/src/app/api/flows/route.ts
+++ b/src/app/api/flows/route.ts
@@ -1,5 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
+import { requireRole, toErrorResponse } from '@/lib/auth/account'
 import { supabaseAdmin } from '@/lib/flows/admin-client'
 import { getFlowTemplate } from '@/lib/flows/templates'
 
@@ -45,6 +46,15 @@ export async function GET() {
 }
 
 export async function POST(request: Request) {
+  // Creating a flow is a write — the RLS flows_insert policy requires
+  // `agent`, but this route inserts via the service-role client which
+  // bypasses RLS, so the role must be enforced here.
+  try {
+    await requireRole('agent')
+  } catch (err) {
+    return toErrorResponse(err)
+  }
+
   const guard = await requireUser()
   if (!guard.ok) {
     return NextResponse.json(guard.body, { status: guard.status })