Improve tool description to encourage model to use summarize_document

mcp_summary_server.py

@@ -44,17 +44,22 @@ TOOLS_LIST: Dict[str, Any] = {
     "tools": [
         {
             "name": "summarize_document",
-            "description": "Summarize a document. Automatically handles chunking for long text. Returns a concise summary without exposing the full text.",
+            "description": (
+                "Use this tool for any long or complex document you need to summarize. "
+                "It automatically chunks large texts, summarizes each chunk, and combines them "
+                "into one concise summary while keeping the full text out of the chat context window. "
+                "Prefer this tool over doing your own summarization for documents longer than a few paragraphs."
+            ),
             "inputSchema": {
                 "type": "object",
                 "properties": {
                     "text": {
                         "type": "string",
-                        "description": "The document text to summarize"
+                        "description": "The full document text to summarize. Paste or paste-in the entire content."
                     },
                     "max_length": {
                         "type": "integer",
-                        "description": "Maximum length of summary in words (default: 100)"
+                        "description": "Maximum length of summary in words (default: 100). Use this to control detail level."
                     }
                 },
                 "required": ["text"]