diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 45b841d55..c89510aa9 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "be0c1a9835a74664c85e3de34469c9315e32d1bf",
-  "syncedAt": "2026-04-27T16:18:24.476Z"
+  "sha": "efc3a52947e9f0909569bf23dc9c5d1544f6aec3",
+  "syncedAt": "2026-04-27T16:43:24.967Z"
 }
diff --git a/docs/tools/acp-agents.md b/docs/tools/acp-agents.md
index fce4f8764..e27932983 100644
--- a/docs/tools/acp-agents.md
+++ b/docs/tools/acp-agents.md
@@ -676,7 +676,9 @@ background work. The delivery path depends on that shape.
 
     Notes:
 
-    - `resumeSessionId` requires `runtime: "acp"` — returns an error if used with the sub-agent runtime.
+    - `resumeSessionId` only applies when `runtime: "acp"`; the default sub-agent runtime ignores this ACP-only field.
+    - `streamTo` only applies when `runtime: "acp"`; the default sub-agent runtime ignores this ACP-only field.
+    - `resumeSessionId` is a host-local ACP/harness resume id, not an OpenClaw channel session key; OpenClaw still checks ACP spawn policy and target agent policy before dispatch, while the ACP backend or harness owns authorization for loading that upstream id.
     - `resumeSessionId` restores the upstream ACP conversation history; `thread` and `mode` still apply normally to the new OpenClaw session you are creating, so `mode: "session"` still requires `thread: true`.
     - The target agent must support `session/load` (Codex and Claude Code do).
     - If the session id is not found, the spawn fails with a clear error — no silent fallback to a new session.