diff --git a/.openclaw-sync/source.json b/.openclaw-sync/source.json
index 2d2320502..88e81bfab 100644
--- a/.openclaw-sync/source.json
+++ b/.openclaw-sync/source.json
@@ -1,5 +1,5 @@
 {
   "repository": "openclaw/openclaw",
-  "sha": "7fb2a356e8f2ae2bdbde12952bb2a9c71e8ed775",
-  "syncedAt": "2026-04-27T12:21:58.497Z"
+  "sha": "0a076bc0fca22e2a71bbc600b6f8bed7ee235408",
+  "syncedAt": "2026-04-27T12:23:35.776Z"
 }
diff --git a/docs/plugins/building-plugins.md b/docs/plugins/building-plugins.md
index ff9d4914d..7424ca3c6 100644
--- a/docs/plugins/building-plugins.md
+++ b/docs/plugins/building-plugins.md
@@ -243,6 +243,7 @@ Users enable optional tools in config:
 ```
 
 - Tool names must not clash with core tools (conflicts are skipped)
+- Tools with malformed registration objects, including missing `parameters`, are skipped and reported in plugin diagnostics instead of breaking agent runs
 - Use `optional: true` for tools with side effects or extra binary requirements
 - Users can enable all tools from a plugin by adding the plugin id to `tools.allow`