diff --git a/app/api/operator.py b/app/api/operator.py
index 6492c85..7908785 100644
--- a/app/api/operator.py
+++ b/app/api/operator.py
@@ -310,7 +310,18 @@ def mercadopago_check(user=Depends(operator)):
         raise HTTPException(409, 'Mercado Pago não está configurado')
     from ..mercadopago_probe import check
     audit('mercadopago_check', operator=user)
-    return check(payment.access_token)
+    result = check(payment.access_token)
+    # Whether Mercado Pago's notifications reach this server and pass the
+    # signature: every accepted one is recorded, a refused one is audited.
+    with db.connect() as c:
+        received = c.execute('''SELECT count(*) AS n, max(received_at) AS last FROM dtf_local.payment_events
+            WHERE provider='mercadopago' AND received_at > now()-interval '24 hours' ''').fetchone()
+        last = c.execute('''SELECT received_at,status,outcome FROM dtf_local.payment_events
+            WHERE provider='mercadopago' ORDER BY received_at DESC LIMIT 1''').fetchone()
+        refused = c.execute('''SELECT count(*) AS n FROM dtf_local.security_events
+            WHERE event='payment_webhook_rejected' AND created_at > now()-interval '24 hours' ''').fetchone()
+    result['webhooks'] = {'accepted_24h': received['n'], 'refused_24h': refused['n'], 'last': last}
+    return result
 
 
 @router.get('/api/operator/tiny/callback')
diff --git a/web/kanban.js b/web/kanban.js
index 3517abe..5e8a330 100644
--- a/web/kanban.js
+++ b/web/kanban.js
@@ -679,7 +679,10 @@ function renderIntegrations(){
     const conta=r.account.error?'conta: '+r.account.error:'conta '+r.account.nickname+' ('+r.account.id+') · '+
       (r.account.test_user?'usuário de teste':'não é usuário de teste');
     const bin=Array.isArray(r.bin)?(r.bin.length?r.bin.map(o=>o.method+' '+o.type+' · '+o.issuer+' · até '+Math.max(...o.installments)+'x').join('; '):'cartão de teste não reconhecido'):'cartão: '+r.bin.error;
-    say('Mercado Pago: credencial '+(r.token==='test'?'de teste':'de produção')+' · '+conta+' · '+bin,false,60000);
+    const w=r.webhooks||{};
+    const avisos='avisos nas últimas 24 h: '+w.accepted_24h+' aceitos, '+w.refused_24h+' recusados pela assinatura'+
+      (w.last?' · último em '+new Date(w.last.received_at).toLocaleString('pt-BR')+' ('+w.last.status+')':' · nenhum recebido ainda');
+    say('Mercado Pago: credencial '+(r.token==='test'?'de teste':'de produção')+' · '+conta+' · '+bin+' · '+avisos,false,60000);
   },'btn ghost')]:[];
   cards.push(integration('Mercado Pago',mp==='mercadopago'?'Ativo':'Não configurado',mp==='mercadopago'?'ok':'off',
     mp==='mercadopago'?'PIX e cartão ativos.':'Aguardando credenciais.',mpActions));