diff --git a/README.md b/README.md
index 9ad90b0..9247f21 100644
--- a/README.md
+++ b/README.md
@@ -221,6 +221,11 @@ nanobot gateway
 }
 ```
 
+**Limitations (current implementation)**
+- Global allowlist only (`allowFrom`); no `groupPolicy`, `dm.policy`, or per-guild/per-channel rules
+- No `requireMention` or per-channel enable/disable
+- Outbound messages are text only (no file uploads)
+
 **4. Invite the bot**
 - OAuth2 → URL Generator
 - Scopes: `bot`