diff --git a/DysonNetwork.Insight/Thought/ThoughtController.cs b/DysonNetwork.Insight/Thought/ThoughtController.cs
index 7b87aba..2ad969a 100644
--- a/DysonNetwork.Insight/Thought/ThoughtController.cs
+++ b/DysonNetwork.Insight/Thought/ThoughtController.cs
@@ -21,6 +21,7 @@ public class ThoughtController(ThoughtProvider provider, ThoughtService service)
     {
         [Required] public string UserMessage { get; set; } = null!;
         public Guid? SequenceId { get; set; }
+        public List<string> AcceptProposals { get; set; } = [];
     }
 
     [HttpPost]
@@ -69,6 +70,18 @@ public class ThoughtController(ThoughtProvider provider, ThoughtService service)
             "When the user asks questions about the Solar Network (also known as SN and Solian), try use the tools you have to get latest and accurate data."
         );
 
+        chatHistory.AddSystemMessage(
+            "You can issue some proposals to user, like creating a post. The proposal syntax is like a xml tag, with an attribute indicates which proposal.\n" +
+            "Depends on the proposal type, the payload (content inside the xml tag) might be different.\n" +
+            "\n" +
+            "Example: <proposal type=\"post_create\">...post content...</proposal>\n" +
+            "\n" +
+            "Here are some references of the proposals you can issue, but if you want to issue one, make sure the user is accept it.\n" +
+            "1. post_create: body takes simple string, create post for user." +
+            "\n" +
+            $"The user currently accept these proposals: {string.Join(',', request.AcceptProposals)}"
+        );
+
         chatHistory.AddSystemMessage(
             $"The user you're currently talking to is {currentUser.Nick} ({currentUser.Name}), ID is {currentUser.Id}"
         );
@@ -135,7 +148,7 @@ public class ThoughtController(ThoughtProvider provider, ThoughtService service)
                     }
                 };
                 if (streamingChunk == null) continue;
-                
+
                 thinkingChunks.Add(streamingChunk);
 
                 var messageJson = item switch