diff --git a/apps/api/src/config/env.ts b/apps/api/src/config/env.ts
index a4e7d09..8d81332 100644
--- a/apps/api/src/config/env.ts
+++ b/apps/api/src/config/env.ts
@@ -13,6 +13,25 @@ const envSchema = z.object({
   JWT_EXPIRES_IN: z.string().default('15m'),
   JWT_REFRESH_EXPIRES_IN: z.string().default('7d'),
   CORS_ORIGIN: z.string().default('http://localhost:3000'),
+
+  // FIEL encryption (separate from JWT to allow independent rotation)
+  FIEL_ENCRYPTION_KEY: z.string().min(32).default('dev-fiel-encryption-key-min-32-chars!!'),
+  FIEL_STORAGE_PATH: z.string().default('/var/horux/fiel'),
+
+  // MercadoPago
+  MP_ACCESS_TOKEN: z.string().optional(),
+  MP_WEBHOOK_SECRET: z.string().optional(),
+  MP_NOTIFICATION_URL: z.string().optional(),
+
+  // SMTP (Gmail Workspace)
+  SMTP_HOST: z.string().default('smtp.gmail.com'),
+  SMTP_PORT: z.string().default('587'),
+  SMTP_USER: z.string().optional(),
+  SMTP_PASS: z.string().optional(),
+  SMTP_FROM: z.string().default('Horux360 <noreply@horuxfin.com>'),
+
+  // Admin notification email
+  ADMIN_EMAIL: z.string().default('carlos@horuxfin.com'),
 });
 
 const parsed = envSchema.safeParse(process.env);