Update app.py

app.py

@@ -154,7 +154,7 @@ def index_from_url(url: str) -> tuple[str, str]:
 # -----------------------------
 # Search (MCP tool-friendly)
 # -----------------------------
-def search(query: str, k: int):
+def search(query: str, k: int = 5):
     """
     Search within a PDF document for the most relevant pages to answer a query and synthetizes a short grounded answer using only those pages.
 
@@ -165,7 +165,7 @@ def search(query: str, k: int):
           type: object
           properties:
             query: {type: string, description: "User query in natural language."}
-            k: {type: integer, minimum: 1, maximum: 10, description: "Number of top pages to retrieve."}
+            k: {type: integer, minimum: 1, maximum: 20, default: 5. description: "Number of top pages to retrieve."}
           required: ["query"]
 
     Args: