diff --git a/apps/web/src/lib/api-client.ts b/apps/web/src/lib/api-client.ts
index 445700b..4814c46 100644
--- a/apps/web/src/lib/api-client.ts
+++ b/apps/web/src/lib/api-client.ts
@@ -12,6 +12,10 @@ import { authStore } from './auth-store';
 
 const PROBLEM_CONTENT_TYPE = 'application/problem+json';
 
+// Prefixo canônico: proxy Vite (/api → :3000) + versão da API.
+// Em produção o Nginx faz o mesmo roteamento pelo mesmo prefixo.
+const API_BASE = '/api/v1';
+
 export interface ProblemDetails {
   type: string;
   title: string;
@@ -54,7 +58,7 @@ export async function apiFetch(path: string, options: RequestOptions = {}): Prom
     ...(body !== undefined ? { body: JSON.stringify(body) } : {}),
   };
 
-  const response = await fetch(path, init);
+  const response = await fetch(`${API_BASE}${path}`, init);
 
   if (!response.ok) {
     throw await toApiError(response);