Index: src/services/guardianship/index.js
===================================================================
--- src/services/guardianship/index.js	(revision 2b4252c2c84fdd36dbdc75db1a4931f813b18a90)
+++ src/services/guardianship/index.js	(revision b258a79c2fe38a0e36e15b6b37200f98dc0c951c)
@@ -16,5 +16,5 @@
  */
 export { SHAER_CONTEXT, GUARDIAN_RELATIONSHIP, GUARDIAN_RELATIONSHIP_COMPACT, isGuardianRelationship } from './context.js';
-export { helpRequestProps, isHelpRequest, waveProps, isWave, hasGuardiansProps, objectHasGuardians } from './notes.js';
+export { helpRequestProps, isHelpRequest, waveProps, isWave, hasGuardiansProps, objectHasGuardians, externalEmbedsAllowed } from './notes.js';
 export { wireDelivery, c2sVisibility, deliverDirectNote } from './delivery.js';
 export { wireHandshake, handleOutbox as handleGuardianshipOutbox, handleInbox as handleGuardianshipInbox, parseRelationship } from './handshake.js';
Index: src/services/guardianship/notes.js
===================================================================
--- src/services/guardianship/notes.js	(revision 2b4252c2c84fdd36dbdc75db1a4931f813b18a90)
+++ src/services/guardianship/notes.js	(revision b258a79c2fe38a0e36e15b6b37200f98dc0c951c)
@@ -15,4 +15,21 @@
   try { return (slug && listGuardians(slug).length) ? { 'shaer:hasGuardians': true } : {}; }
   catch { return {}; }
+}
+
+/**
+ * May EXTERNAL (non-fediverse) embeds be shown to this account?
+ *
+ * A gated feature in the FEP-633c sense: a ward's world outside the fediverse
+ * is the guardians' call. `setting` is `sites.external_embeds`:
+ *   null/undefined → auto: off for a ward, on for anyone else
+ *   0 → off, 1 → on (the guardians decided)
+ *
+ * Pure, so the rule is testable on its own. The gate is applied SERVER-side:
+ * a blocked embed is never serialised into the feed, because an embed that the
+ * client merely hides has still been delivered.
+ */
+export function externalEmbedsAllowed(setting, isWard) {
+  if (setting === 0 || setting === 1) return setting === 1;
+  return !isWard;
 }
 
@@ -48,3 +65,3 @@
 }
 
-export default { helpRequestProps, isHelpRequest, waveProps, isWave, hasGuardiansProps, objectHasGuardians };
+export default { helpRequestProps, isHelpRequest, waveProps, isWave, hasGuardiansProps, objectHasGuardians, externalEmbedsAllowed };