diff --git a/src/lib/server/auth/access.ts b/src/lib/server/auth/access.ts
index 7396fe9..1dcf3bb 100644
--- a/src/lib/server/auth/access.ts
+++ b/src/lib/server/auth/access.ts
@@ -39,6 +39,7 @@ export function routePermission(routeId: string | null, method: string): RoutePe
     // bytes, and unfiltered diagnostics may contain runtime credentials.
     if (routeId === '/configs/[id]' || routeId === '/api/configs/[id]' || routeId === '/api/configs/inspect'
         || routeId === '/api/campaigns/[id]/file/[fileId]' || routeId === '/api/deployments/[id]/file/[fileId]'
+        || routeId === '/api/betas/[id]/revisions/[revision]/files/[scriptId]'
         || routeId === '/api/servers/[name]/logs/[file]' || routeId === '/api/servers/[name]/telemetry-requests') return 'operator';
 
     return reading ? 'viewer' : 'operator';
diff --git a/tests/unit/auth-access.test.ts b/tests/unit/auth-access.test.ts
index 110568c..bce6ba6 100644
--- a/tests/unit/auth-access.test.ts
+++ b/tests/unit/auth-access.test.ts
@@ -61,6 +61,7 @@ describe('management route permissions', () => {
     it.each([
         '/configs/[id]', '/api/configs/[id]', '/api/configs/inspect',
         '/api/campaigns/[id]/file/[fileId]', '/api/deployments/[id]/file/[fileId]',
+        '/api/betas/[id]/revisions/[revision]/files/[scriptId]',
         '/api/servers/[name]/logs/[file]', '/api/servers/[name]/telemetry-requests'
     ])('prevents viewer access to secret-bearing raw content at %s', route => {
         for (const method of ['GET', 'HEAD']) {
diff --git a/tests/unit/auth-guard.test.ts b/tests/unit/auth-guard.test.ts
index e8f2c41..3c81b1a 100644
--- a/tests/unit/auth-guard.test.ts
+++ b/tests/unit/auth-guard.test.ts
@@ -125,6 +125,17 @@ describe('browser authentication guard', () => {
         if (expectedStatus === 200) { expect(call.resolve).toHaveBeenCalledOnce(); expect(call.event.locals.user).toEqual(session.user); }
         else expect(call.resolve).not.toHaveBeenCalled();
     });
+    it.each(['GET', 'HEAD'])('restricts raw beta file %s requests to operators and administrators', async method => {
+        for (const role of ['viewer', 'operator', 'admin'] as const) {
+            signIn(role);
+            const call = requestFor('/api/betas/[id]/revisions/[revision]/files/[scriptId]', {
+                method, path: '/api/betas/1/revisions/1/files/1'
+            });
+            expect((await call.invoke()).status).toBe(role === 'viewer' ? 403 : 200);
+            if (role === 'viewer') expect(call.resolve).not.toHaveBeenCalled();
+            else expect(call.resolve).toHaveBeenCalledOnce();
+        }
+    });
     it('requires temporary-password users to change it even if their role is administrator', async () => {
         signIn('admin', true);
         await expect(requestFor('/settings').invoke()).rejects.toMatchObject({ status: 303, location: '/account' });