diff --git a/tools/post.py b/tools/post.py
index b3a7c2a..c69b2a2 100644
--- a/tools/post.py
+++ b/tools/post.py
@@ -6,8 +6,23 @@ class PostArgs(BaseModel):
     text: str = Field(..., description="The text content to post (max 300 characters)")
 
 
-def post_to_bluesky(text: str) -> str:
-    """Post a message to Bluesky."""
+def create_new_bluesky_post(text: str) -> str:
+    """
+    Create a NEW standalone post on Bluesky. This tool creates independent posts that
+    start new conversations.
+    
+    IMPORTANT: This tool is ONLY for creating new posts. To reply to an existing post,
+    use reply_to_bluesky_post instead.
+    
+    Args:
+        text: The post content (max 300 characters)
+        
+    Returns:
+        Success message with post URL
+        
+    Raises:
+        Exception: If the post fails
+    """
     import os
     import requests
     from datetime import datetime, timezone
diff --git a/tools/reply.py b/tools/reply.py
new file mode 100644
index 0000000..e96e558
--- /dev/null
+++ b/tools/reply.py
@@ -0,0 +1,58 @@
+"""Reply to Bluesky posts tool."""
+
+from typing import Optional
+from pydantic import BaseModel, Field
+from atproto import Client
+from tools.base_tool import get_bsky_client, log
+
+class ReplyArgs(BaseModel):
+    """Arguments for replying to a Bluesky post."""
+    text: str = Field(..., description="The reply text content (max 300 characters)")
+    reply_to_uri: str = Field(..., description="The AT URI of the post being replied to (required)")
+    reply_to_cid: str = Field(..., description="The CID of the post being replied to (required)")
+
+def reply_to_bluesky_post(text: str, reply_to_uri: str, reply_to_cid: str) -> str:
+    """
+    Reply to an existing Bluesky post. This tool creates a threaded reply to a specific post.
+    
+    IMPORTANT: This tool is ONLY for replying to existing posts. To create a new standalone post,
+    use create_new_bluesky_post instead.
+    
+    Args:
+        text: The reply text content (max 300 characters)
+        reply_to_uri: The AT URI of the post being replied to (required)
+        reply_to_cid: The CID of the post being replied to (required)
+        
+    Returns:
+        Success message with post URI or error message
+        
+    Raises:
+        Exception: If the reply fails
+    """
+    if len(text) > 300:
+        raise ValueError(f"Reply text too long: {len(text)} characters (max 300)")
+    
+    if not reply_to_uri:
+        raise ValueError("reply_to_uri is required for replies")
+    
+    if not reply_to_cid:
+        raise ValueError("reply_to_cid is required for replies")
+    
+    try:
+        client = get_bsky_client()
+        
+        # Create the reply reference
+        reply_ref = {
+            "root": {"uri": reply_to_uri, "cid": reply_to_cid},
+            "parent": {"uri": reply_to_uri, "cid": reply_to_cid}
+        }
+        
+        # Send the reply
+        response = client.send_post(text=text, reply_to=reply_ref)
+        
+        log.info(f"Successfully replied to post {reply_to_uri}")
+        return f"Successfully posted reply: {response.uri}"
+        
+    except Exception as e:
+        log.error(f"Failed to reply to post: {str(e)}")
+        raise
\ No newline at end of file