Merge pull request #987 from alpiua/fix-mcp-null-payload

fix(mcp): handle null JSON-RPC request payloads safely

mempalace/mcp_server.py

@@ -1968,6 +1968,12 @@ SUPPORTED_PROTOCOL_VERSIONS = [
 
 
 def handle_request(request):
+    if not isinstance(request, dict):
+        return {
+            "jsonrpc": "2.0",
+            "id": None,
+            "error": {"code": -32600, "message": "Invalid Request"},
+        }
     method = request.get("method") or ""
     params = request.get("params") or {}
     req_id = request.get("id")
@@ -2005,6 +2011,15 @@ def handle_request(request):
             },
         }
     elif method == "tools/call":
+        if not isinstance(params, dict) or "name" not in params:
+            return {
+                "jsonrpc": "2.0",
+                "id": req_id,
+                "error": {
+                    "code": -32602,
+                    "message": "Invalid params: 'name' is required for tools/call",
+                },
+            }
         tool_name = params.get("name")
         tool_args = params.get("arguments") or {}
         if tool_name not in TOOLS: