diff --git a/.custodian-brief.md b/.custodian-brief.md
index d976cf7..ce91447 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — inter-hub
 
 **Domain:** inter_hub  
-**Last synced:** 2026-05-02 14:43 UTC  
+**Last synced:** 2026-05-02 14:59 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Current Goal
@@ -11,6 +11,9 @@ IHF Phase 1 complete — Phase 2 ready to start
 
 ## Active Workstreams
 
+### IHF Phase 9 — External API Surface and Consumer SDKs
+Progress: 11/11 done  |  workstream_id: `c6c6e87f-e145-4bc4-9881-61f92b14d4de`
+
 ### Railiance01 Deployment — Production Operations Scaffold
 Progress: no tasks done  |  workstream_id: `080d841a-3acd-4adf-b684-2d1890a5e986`