diff --git a/backend/newwhats/proxy.js b/backend/newwhats/proxy.js
index c5ffa24..5a4f405 100644
--- a/backend/newwhats/proxy.js
+++ b/backend/newwhats/proxy.js
@@ -35,6 +35,8 @@ export function createRestProxy() {
       'Content-Type': 'application/json',
       'x-nw-key': cfg.integrationKey,
       'x-nw-email': email,
+      // clínica do workspace ativo (modelo de canal) — repassa ao motor se veio.
+      ...(req.headers['x-nw-clinica'] ? { 'x-nw-clinica': String(req.headers['x-nw-clinica']) } : {}),
     } };
     if (!['GET', 'HEAD'].includes(req.method) && req.body && Object.keys(req.body).length) {
       opts.body = JSON.stringify(req.body);
diff --git a/frontend/views/newwhats/services/nwClient.ts b/frontend/views/newwhats/services/nwClient.ts
index c05ee40..35e1e79 100644
--- a/frontend/views/newwhats/services/nwClient.ts
+++ b/frontend/views/newwhats/services/nwClient.ts
@@ -9,9 +9,19 @@ export function nwToken(): string | null {
   try { return localStorage.getItem(TOKEN_KEY); } catch { return null; }
 }
 
+// Clínica do workspace ativo — escopo por-requisição (modelo de canal).
+function activeClinicaId(): string | null {
+  try { return JSON.parse(localStorage.getItem('SCOREODONTO_ACTIVE_WORKSPACE') || '{}')?.id || null; } catch { return null; }
+}
+
 function authHeaders(extra?: Record<string, string>): Record<string, string> {
   const t = nwToken();
-  return { ...(t ? { Authorization: `Bearer ${t}` } : {}), ...(extra || {}) };
+  const c = activeClinicaId();
+  return {
+    ...(t ? { Authorization: `Bearer ${t}` } : {}),
+    ...(c ? { 'x-nw-clinica': c } : {}),
+    ...(extra || {}),
+  };
 }
 
 async function req(method: string, path: string, body?: any): Promise<any> {