diff --git a/src/app/api/meta/duplicate/route.ts b/src/app/api/meta/duplicate/route.ts
new file mode 100644
index 0000000..602a7ab
--- /dev/null
+++ b/src/app/api/meta/duplicate/route.ts
@@ -0,0 +1,46 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { createMetaMCPClient } from '@/lib/mcp/client';
+import { duplicateEntity, type DuplicableLevel } from '@/lib/mcp/tools';
+import { getAccessToken } from '@/lib/auth/session';
+
+const VALID_LEVELS: DuplicableLevel[] = ['campaign', 'adset', 'ad'];
+
+export async function POST(request: NextRequest) {
+  let client: Awaited<ReturnType<typeof createMetaMCPClient>> | undefined;
+
+  try {
+    const token = await getAccessToken();
+    if (!token) {
+      return NextResponse.json({ success: false, error: 'Not authenticated' }, { status: 401 });
+    }
+
+    const body = await request.json();
+    const { level, id } = body as { level?: DuplicableLevel; id?: string };
+
+    if (!level || !VALID_LEVELS.includes(level)) {
+      return NextResponse.json(
+        { success: false, error: 'level inválido. Use "campaign", "adset" ou "ad".' },
+        { status: 400 }
+      );
+    }
+
+    if (!id) {
+      return NextResponse.json({ success: false, error: 'id é obrigatório.' }, { status: 400 });
+    }
+
+    client = await createMetaMCPClient(token);
+    const data = await duplicateEntity(client, level, id);
+
+    return NextResponse.json({ success: true, data });
+  } catch (error) {
+    console.error('[API] Error duplicating entity:', error);
+    return NextResponse.json(
+      { success: false, error: error instanceof Error ? error.message : 'Failed to duplicate' },
+      { status: 500 }
+    );
+  } finally {
+    if (client) {
+      await client.close();
+    }
+  }
+}
diff --git a/src/components/dashboard/CampaignTable.tsx b/src/components/dashboard/CampaignTable.tsx
index fd39c0d..b1969aa 100644
--- a/src/components/dashboard/CampaignTable.tsx
+++ b/src/components/dashboard/CampaignTable.tsx
@@ -1,7 +1,7 @@
 'use client';
 
 import React, { useState } from 'react';
-import { Pause, Play, DollarSign, Search, ArrowUpDown, ChevronDown, ChevronRight, Folder, Layers, Megaphone, Plus } from 'lucide-react';
+import { Pause, Play, DollarSign, Search, ArrowUpDown, ChevronDown, ChevronRight, Folder, Layers, Megaphone, Plus, Copy } from 'lucide-react';
 import { Spinner } from '@/components/ui/Spinner';
 import { BudgetModal } from './BudgetModal';
 import { AddAdModal } from './AddAdModal';
@@ -41,9 +41,34 @@ export function CampaignTable({ campaigns, loading, onStatusChange, onBudgetChan
     adsetName: string;
   } | null>(null);
 
+  const [duplicatingId, setDuplicatingId] = useState<string | null>(null);
+  const [dupError, setDupError] = useState<string | null>(null);
+
   // State for tracking which rows (Campaign or AdSet) are expanded
   const [expandedRows, setExpandedRows] = useState<Set<string>>(new Set());
 
+  const duplicate = async (level: 'campaign' | 'adset' | 'ad', id: string) => {
+    setDuplicatingId(id);
+    setDupError(null);
+    try {
+      const res = await fetch('/api/meta/duplicate', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ level, id }),
+      });
+      const data = await res.json();
+      if (!data.success) {
+        setDupError(data.error || 'Não foi possível duplicar.');
+        return;
+      }
+      onAdCreated(); // recarrega a lista — a cópia (Pausada) aparece na árvore
+    } catch (err) {
+      setDupError(err instanceof Error ? err.message : 'Erro ao duplicar.');
+    } finally {
+      setDuplicatingId(null);
+    }
+  };
+
   const toggleSort = (f: SortField) => {
     if (sortField === f) setSortDir(d => d === 'asc' ? 'desc' : 'asc');
     else { setSortField(f); setSortDir('desc'); }
@@ -107,6 +132,12 @@ export function CampaignTable({ campaigns, loading, onStatusChange, onBudgetChan
             <input type="text" value={search} onChange={e => setSearch(e.target.value)} placeholder="Buscar campanha..." className="input-field text-xs" style={{ width: '220px', paddingLeft: '34px', paddingTop: '8px', paddingBottom: '8px' }} />
           </div>
         </div>
+        {dupError && (
+          <div className="mx-5 mt-3 px-4 py-2.5 rounded-lg text-xs flex items-center justify-between gap-3" style={{ background: 'rgba(239,68,68,0.08)', border: '1px solid rgba(239,68,68,0.15)', color: '#f87171' }}>
+            <span>{dupError}</span>
+            <button onClick={() => setDupError(null)} className="shrink-0 hover:text-white transition-colors">✕</button>
+          </div>
+        )}
         <div className="overflow-x-auto">
           <table className="w-full campaign-table">
             <thead>
@@ -178,6 +209,9 @@ export function CampaignTable({ campaigns, loading, onStatusChange, onBudgetChan
                               <DollarSign size={14} />
                             </button>
                           )}
+                          <button onClick={() => duplicate('campaign', c.campaign.id)} disabled={duplicatingId === c.campaign.id} className="btn-ghost p-1.5" title="Duplicar campanha (cópia completa, Pausada)">
+                            {duplicatingId === c.campaign.id ? <Spinner size="sm" /> : <Copy size={14} />}
+                          </button>
                         </div>
                       </td>
                     </tr>
@@ -232,6 +266,9 @@ export function CampaignTable({ campaigns, loading, onStatusChange, onBudgetChan
                                 >
                                   <Plus size={12} />
                                 </button>
+                                <button onClick={() => duplicate('adset', adset.id)} disabled={duplicatingId === adset.id} className="p-1 rounded hover:bg-white/5 transition-colors text-[var(--muted-fg)] hover:text-white" title="Duplicar conjunto (com os anúncios, Pausado)">
+                                  {duplicatingId === adset.id ? <Spinner size="sm" /> : <Copy size={12} />}
+                                </button>
                                 <button onClick={() => toggleStatus(adset.id, adset.status)} disabled={actionLoading === adset.id} className="p-1 rounded hover:bg-white/5 transition-colors text-[var(--muted-fg)] hover:text-white" title={adsetActive ? 'Pausar' : 'Reativar'}>
                                   {actionLoading === adset.id ? <Spinner size="sm" /> : adsetActive ? <Pause size={12} /> : <Play size={12} />}
                                 </button>
@@ -263,9 +300,14 @@ export function CampaignTable({ campaigns, loading, onStatusChange, onBudgetChan
                                 <td className="text-xs py-1.5" style={{ color: (ad.insights?.leads || 0) > 0 ? '#4ade80' : 'var(--muted-fg)' }}>{ad.insights?.leads || 0}</td>
                                 <td className="text-xs py-1.5" style={{ color: (ad.insights?.roas || 0) >= 1 ? '#4ade80' : (ad.insights?.roas || 0) > 0 ? '#fbbf24' : 'var(--muted-fg)' }}>{(ad.insights?.roas || 0) > 0 ? `${(ad.insights?.roas || 0).toFixed(2)}x` : '—'}</td>
                                 <td className="pr-5 py-1.5">
-                                  <button onClick={() => toggleStatus(ad.id, ad.status)} disabled={actionLoading === ad.id} className="p-1 rounded hover:bg-white/5 transition-colors text-[var(--muted-fg)] hover:text-white" title={adActive ? 'Pausar' : 'Reativar'}>
-                                    {actionLoading === ad.id ? <Spinner size="sm" /> : adActive ? <Pause size={12} /> : <Play size={12} />}
-                                  </button>
+                                  <div className="flex items-center gap-1">
+                                    <button onClick={() => duplicate('ad', ad.id)} disabled={duplicatingId === ad.id} className="p-1 rounded hover:bg-white/5 transition-colors text-[var(--muted-fg)] hover:text-white" title="Duplicar anúncio (no mesmo conjunto, Pausado)">
+                                      {duplicatingId === ad.id ? <Spinner size="sm" /> : <Copy size={12} />}
+                                    </button>
+                                    <button onClick={() => toggleStatus(ad.id, ad.status)} disabled={actionLoading === ad.id} className="p-1 rounded hover:bg-white/5 transition-colors text-[var(--muted-fg)] hover:text-white" title={adActive ? 'Pausar' : 'Reativar'}>
+                                      {actionLoading === ad.id ? <Spinner size="sm" /> : adActive ? <Pause size={12} /> : <Play size={12} />}
+                                    </button>
+                                  </div>
                                 </td>
                               </tr>
                             );
diff --git a/src/lib/mcp/client.ts b/src/lib/mcp/client.ts
index 9a00144..b10154d 100644
--- a/src/lib/mcp/client.ts
+++ b/src/lib/mcp/client.ts
@@ -142,6 +142,39 @@ export async function callMetaTool(
         return { content: [{ type: 'text', text: JSON.stringify(allPages) }] };
       }
 
+      // Duplicação nativa (mesmo "Duplicar" do Ads Manager) via endpoint /copies.
+      // Sempre cria como PAUSED e com sufixo no nome pra identificar a cópia.
+      case 'copy_campaign': {
+        requireFields(args, ['campaign_id'], toolName);
+        resultData = await fetchGraphPostForm(`/${args.campaign_id}/copies`, token, {
+          deep_copy: true, // copia ad sets + anúncios junto
+          status_option: 'PAUSED',
+          rename_options: { rename_suffix: ' - Cópia' },
+        });
+        return { content: [{ type: 'text', text: JSON.stringify(resultData) }] };
+      }
+
+      case 'copy_adset': {
+        requireFields(args, ['adset_id'], toolName);
+        resultData = await fetchGraphPostForm(`/${args.adset_id}/copies`, token, {
+          deep_copy: true, // copia os anúncios do conjunto junto
+          status_option: 'PAUSED',
+          rename_options: { rename_suffix: ' - Cópia' },
+          ...(args.target_campaign_id ? { campaign_id: args.target_campaign_id } : {}),
+        });
+        return { content: [{ type: 'text', text: JSON.stringify(resultData) }] };
+      }
+
+      case 'copy_ad': {
+        requireFields(args, ['ad_id'], toolName);
+        resultData = await fetchGraphPostForm(`/${args.ad_id}/copies`, token, {
+          status_option: 'PAUSED',
+          rename_options: { rename_suffix: ' - Cópia' },
+          ...(args.target_adset_id ? { adset_id: args.target_adset_id } : {}),
+        });
+        return { content: [{ type: 'text', text: JSON.stringify(resultData) }] };
+      }
+
       case 'get_insights_for_account':
         resultData = await fetchGraphGet(`/${accountId}/insights`, token, {
           date_preset: args.date_preset || 'last_30d',
diff --git a/src/lib/mcp/tools.ts b/src/lib/mcp/tools.ts
index eca3009..c7b0c03 100644
--- a/src/lib/mcp/tools.ts
+++ b/src/lib/mcp/tools.ts
@@ -130,6 +130,32 @@ export async function resumeCampaign(client: Client, campaignId: string) {
   return extractContent(result);
 }
 
+export type DuplicableLevel = 'campaign' | 'adset' | 'ad';
+
+/**
+ * Duplica uma campanha, conjunto (ad set) ou anúncio usando o endpoint nativo
+ * /copies da Meta — o mesmo "Duplicar" do Ads Manager. Campanhas e conjuntos
+ * vêm com cópia completa (deep copy: traz os filhos junto) e tudo entra como
+ * PAUSED, pra revisar antes de ativar.
+ */
+export async function duplicateEntity(client: Client, level: DuplicableLevel, id: string) {
+  requireId(id, 'id');
+
+  const config: Record<DuplicableLevel, { tool: string; argKey: string }> = {
+    campaign: { tool: 'copy_campaign', argKey: 'campaign_id' },
+    adset: { tool: 'copy_adset', argKey: 'adset_id' },
+    ad: { tool: 'copy_ad', argKey: 'ad_id' },
+  };
+
+  const entry = config[level];
+  if (!entry) {
+    throw new Error(`Nível inválido para duplicar: ${level}`);
+  }
+
+  const result = await callMetaTool(client, entry.tool, { [entry.argKey]: id });
+  return extractContent(result);
+}
+
 /**
  * Mantido por compatibilidade.
  * ATENÇÃO: orçamento normalmente é no AdSet, não na campanha.