diff --git a/.changeset/fix-d10-envelope-unwrap.md b/.changeset/fix-d10-envelope-unwrap.md
new file mode 100644
index 0000000000..df2fa8d1da
--- /dev/null
+++ b/.changeset/fix-d10-envelope-unwrap.md
@@ -0,0 +1,13 @@
+---
+"@objectstack/rest": patch
+---
+
+Fix: the Setup-nav capability gate (`requiresService`, ADR-0057 D10) was a no-op on the single-item app-meta path.
+
+`GET /meta/app/:name` returns a metadata envelope `{ type, name, item: <app>, ... }`, but
+`filterAppForUser` was applied to the envelope — whose `.navigation` is undefined — so it
+returned it untouched, silently bypassing BOTH the `requiredPermissions` gate and the D10
+`requiresService` gate. Organizations/Invitations therefore still appeared in the Setup app
+even in single-tenant deployments. `filterAppForUser` and `resolveRegisteredServices` now
+unwrap the envelope (the list path already passed the raw app). Verified against a live
+`os dev`: single-tenant hides Organizations/Invitations; multi-tenant shows them.
diff --git a/packages/rest/src/rest-server.ts b/packages/rest/src/rest-server.ts
index 2a042114d3..dd2d9aecc0 100644
--- a/packages/rest/src/rest-server.ts
+++ b/packages/rest/src/rest-server.ts
@@ -1107,6 +1107,15 @@ export class RestServer {
      */
     private filterAppForUser(item: any, sysPerms: Set<string>, serviceGate?: (name: string) => boolean): any | null {
         if (!item || typeof item !== 'object') return item;
+        // getMetaItem returns an envelope { type, name, item: <app>, ... } while the
+        // list path passes the raw app. Unwrap + re-wrap so gating runs on both —
+        // filtering the envelope directly is a silent no-op (its .navigation is
+        // undefined), which would bypass BOTH requiredPermissions and the ADR-0057
+        // D10 requiresService gate.
+        if (isMetaEnvelope(item)) {
+            const body = this.filterAppForUser((item as any).item, sysPerms, serviceGate);
+            return body == null ? null : { ...(item as any), item: body };
+        }
         // ADR-0045: an unpublished app (`hidden: true`) is externally
         // unobservable — only builders (studio/setup access) receive it at all,
         // for direct-URL preview. The launcher's client-side hidden filter is a
@@ -1172,6 +1181,7 @@ export class RestServer {
         const wanted = new Set<string>();
         const walk = (e: any): void => {
             if (!e || typeof e !== 'object') return;
+            if (isMetaEnvelope(e)) { walk((e as any).item); return; }
             if (typeof e.requiresService === 'string') wanted.add(e.requiresService);
             const kids = Array.isArray(e.navigation) ? e.navigation
                 : Array.isArray(e.children) ? e.children : null;
diff --git a/packages/rest/src/rest.test.ts b/packages/rest/src/rest.test.ts
index fdaaba2370..a66a73a32f 100644
--- a/packages/rest/src/rest.test.ts
+++ b/packages/rest/src/rest.test.ts
@@ -1923,6 +1923,20 @@ describe('filterAppForUser — ADR-0057 D10 requiresService gate', () => {
     expect(reg.has('org-scoping')).toBe(true);
     expect(reg.size).toBe(1);
   });
+
+  it('unwraps the getMetaItem envelope and gates the inner app (regression)', () => {
+    const rest: any = make();
+    const envelope = {
+      type: 'app', name: 'setup', lock: 'none',
+      item: { name: 'setup', navigation: [
+        { id: 'nav_users', type: 'object' },
+        { id: 'nav_organizations', type: 'object', requiresService: 'org-scoping' },
+      ] },
+    };
+    const out = rest.filterAppForUser(envelope, new Set<string>(), (n: string) => n !== 'org-scoping');
+    expect(out.type).toBe('app');
+    expect((out.item.navigation as any[]).map((e: any) => e.id)).toEqual(['nav_users']);
+  });
 });
 
 // ---------------------------------------------------------------------------