diff --git a/frontend/src/pages/engineering/developer/ApiReferencePage.jsx b/frontend/src/pages/engineering/developer/ApiReferencePage.jsx
index 64bce2d..8520ed3 100644
--- a/frontend/src/pages/engineering/developer/ApiReferencePage.jsx
+++ b/frontend/src/pages/engineering/developer/ApiReferencePage.jsx
@@ -1304,7 +1304,7 @@ const NAMESPACES = [
   {
     id: 'rf',
     label: 'rf',
-    description: '433 MHz RF remote slots — up to 16, each binding one RF code to a playback action (or a stop). Stored in NVS namespace "rf"; blank by default. Handler: RFRemoteHandler. Only registered on HAS_RF builds — returns "Unknown command" elsewhere (e.g. bespoke-rs485).',
+    description: '433 MHz RF remote slots — up to 16, each binding one RF code to a playback action (or a stop). Stored in NVS namespace "rf"; blank by default. Handler: RFRemoteHandler. Only registered on HAS_RF builds (agnus) — returns "Unknown command" on vesper-std and bespoke-rs485.',
     commands: [
       {
         cmd: 'rf.set_slot',