diff --git a/frontend/src/lib/api/dashboard/admin/permissions.ts b/frontend/src/lib/api/dashboard/admin/permissions.ts
index e6d2ef0..9da2d23 100644
--- a/frontend/src/lib/api/dashboard/admin/permissions.ts
+++ b/frontend/src/lib/api/dashboard/admin/permissions.ts
@@ -57,7 +57,9 @@ export const permissionsAPI = {
 		if (params?.action) queryParams.set('action', params.action);
 		if (params?.search) queryParams.set('search', params.search);
 		const query = queryParams.toString();
-		const response = await api.get(`/v1/core/permissions/${query ? '?' + query : ''}`);
+		// Sin slash final: la ruta backend es @router.get("") = /v1/core/permissions.
+		// Con slash FastAPI responde 307 y el cliente server-side no lo sigue.
+		const response = await api.get(`/v1/core/permissions${query ? '?' + query : ''}`);
 		return response.data;
 	},
 
@@ -65,7 +67,7 @@ export const permissionsAPI = {
 	 * Obtener un permiso por ID
 	 */
 	async getById(id: number): Promise<Permission> {
-		const response = await api.get(`/v1/core/permissions/${id}/`);
+		const response = await api.get(`/v1/core/permissions/${id}`);
 		return response.data;
 	},
 
@@ -73,7 +75,7 @@ export const permissionsAPI = {
 	 * Crear un nuevo permiso
 	 */
 	async create(data: CreatePermissionData): Promise<Permission> {
-		const response = await api.post('/v1/core/permissions/', data);
+		const response = await api.post('/v1/core/permissions', data);
 		return response.data;
 	},
 
@@ -81,7 +83,7 @@ export const permissionsAPI = {
 	 * Actualizar un permiso
 	 */
 	async update(id: number, data: UpdatePermissionData): Promise<Permission> {
-		const response = await api.put(`/v1/core/permissions/${id}/`, data);
+		const response = await api.put(`/v1/core/permissions/${id}`, data);
 		return response.data;
 	},
 
@@ -89,14 +91,14 @@ export const permissionsAPI = {
 	 * Eliminar un permiso
 	 */
 	async delete(id: number): Promise<void> {
-		await api.delete(`/v1/core/permissions/${id}/`);
+		await api.delete(`/v1/core/permissions/${id}`);
 	},
 
 	/**
 	 * Obtener módulos únicos
 	 */
 	async getModules(): Promise<string[]> {
-		const response = await api.get('/v1/core/permissions/modules/');
+		const response = await api.get('/v1/core/permissions/modules');
 		return response.data;
 	},
 
@@ -104,7 +106,7 @@ export const permissionsAPI = {
 	 * Obtener acciones únicas
 	 */
 	async getActions(): Promise<string[]> {
-		const response = await api.get('/v1/core/permissions/actions/');
+		const response = await api.get('/v1/core/permissions/actions');
 		return response.data;
 	}
 };