diff --git a/src/mcp_obsidian/obsidian.py b/src/mcp_obsidian/obsidian.py
index ae99698..d711492 100644
--- a/src/mcp_obsidian/obsidian.py
+++ b/src/mcp_obsidian/obsidian.py
@@ -204,36 +204,54 @@ class Obsidian():
 
         return self._safe_call(call_fn)
     
-    def get_recent_changes(self, limit: int = 10, days: int = None, extensions: list = None) -> Any:
+    def get_recent_changes(self, limit: int = 10, days: int = 90, extensions: list = None) -> Any:
         """Get recently modified files in the vault.
         
         Args:
             limit: Maximum number of files to return (default: 10)
-            days: Only include files modified within this many days (optional)
+            days: Only include files modified within this many days (default: 90)
             extensions: Only include files with these extensions (optional)
             
         Returns:
             List of recently modified files with metadata
         """
-        url = f"{self.get_base_url()}/vault/recent"
-        params = {"limit": limit}
+        # Build the DQL query based on parameters
+        query_lines = ["TABLE file.mtime"]
         
+        # Add WHERE clauses
+        where_clauses = []
         if days is not None:
-            params["days"] = days
+            where_clauses.append(f"file.mtime >= date(today) - dur({days} days)")
             
-        if extensions is not None:
-            params["extensions"] = ",".join(extensions)
+        if extensions:
+            ext_list = ", ".join(f'"{ext}"' for ext in extensions)
+            where_clauses.append(f"file.ext IN ({ext_list})")
+        
+        if where_clauses:
+            query_lines.append(f"WHERE {' AND '.join(where_clauses)}")
+        
+        # Add sorting and limit
+        query_lines.append("SORT file.mtime DESC")
+        query_lines.append(f"LIMIT {limit}")
+        
+        # Join with proper DQL line breaks
+        dql_query = "\n".join(query_lines)
+        
+        # Make the request to search endpoint
+        url = f"{self.get_base_url()}/search/"
+        headers = self._get_headers() | {
+            'Content-Type': 'application/vnd.olrapi.dataview.dql+txt'
+        }
         
         def call_fn():
-            response = requests.get(
-                url, 
-                headers=self._get_headers(), 
-                params=params,
-                verify=self.verify_ssl, 
+            response = requests.post(
+                url,
+                headers=headers,
+                data=dql_query.encode('utf-8'),
+                verify=self.verify_ssl,
                 timeout=self.timeout
             )
             response.raise_for_status()
-            
             return response.json()
 
         return self._safe_call(call_fn)